CN204883459U - Steady voltage source that possesses excessive pressure quick -break protection and overflow monitoring - Google Patents
Steady voltage source that possesses excessive pressure quick -break protection and overflow monitoring Download PDFInfo
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- CN204883459U CN204883459U CN201520613170.7U CN201520613170U CN204883459U CN 204883459 U CN204883459 U CN 204883459U CN 201520613170 U CN201520613170 U CN 201520613170U CN 204883459 U CN204883459 U CN 204883459U
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Abstract
Steady voltage source that possesses excessive pressure quick -break protection and overflow monitoring belongs to electron technical field. Constitute jointly by arrester, current monitoring circuit, front end excessive pressure observation circuit, complementary circuit, quick -break protection circuit, adjustable type rear end excessive pressure observation circuit, sound organ, three terminal regulator. Realize can the steady voltage, can form the monitoring with the output bi -polar at three terminal regulator's input again, form quick -break protection when having the excessive pressure at both ends, the suggestion of initiative formation sound and light to in a series of advantages of guaranteeing the three -terminal steady voltage, carry out the monitoring to the electric current, reduce the fault rate that the power produced, formation is the monitor, is again the protector simultaneously, and power that can also the steady voltage enriches the kind of power, and it is more extensive to make it the application.
Description
Technical field
Belong to electronic technology field.
Background technology
Power supply is a not only ancient but also fresh topic, because the today of development of making rapid progress in electronic technology, technology, in continuous renewal, needs the new power of the needs adapting to various development.So the research to power supply, it is the emphasis of society research always.
Source of stable pressure is the important ingredient of electronic product, and the excellence of its performance is directly connected to overall performance, so there is much outstanding stabilized voltage supply integrated circuit at present, as 78 series, and 79 series etc.Although these integrated series above-mentioned have many good qualities, it is the needs that a kind of mu balanced circuit of popular style still can not meet current electronic product and makes rapid progress.Outstanding power supply it not only want can voltage stabilizing; also to there is the dynamics of protection, in the overvoltage that can cause at thundery sky or various unexpected factor, initiatively protection; instead of need to pull out power supply and carry out support equipment and be not damaged; when equipment has fault, initiatively can represent, can monitor constantly in addition; initiatively prompting; form the prompting of sound and light intuitively, initiatively reduce power fail rate, this novel power supply is main research purpose of the present utility model.
How power failure or because of unexpected make rectifier output voltage too high time, power supply and equipment are not damaged to use certain means to ensure, this is a difficult point studied.How have during fault at power supply itself and protect in time, this is also a difficult point needing to solve.How can learn failure problems in time, this is again an emphasis.If can monitor at any time, learn in time, this is also a difficult point.
If the problems referred to above all obtain adequate solution, such power supply is all extremely outstanding power supply for any product, particularly the antitheft series products of protector or video recorder and so on is needed especially, this series products is comparatively special, it not only needs round-the-clock awaiting orders, more need start in time when there being event, if there is damage, and user cannot learn, because can not detect by simulated accident constantly, thus cannot notify when event occurs in time or report to the police, the consequence produced is hardly imaginable, therefore, band monitoring property, the power supply of protection is had extremely to be necessary.
Solve the above problems, reach and should have monitoring, again be struck by lightning or unexpected overvoltage time, power supply itself has the object having protectiveness during fault; must systematic research be carried out, need the support of multiple technologies, need the mode of thinking of innovation; because it should consider energy voltage stabilizing; floating charge standard value being adjusted easily again, also when there being overcurrent-overvoltage, will can implement protection in time; so; it must break through the mode of traditional mu balanced circuit, finds new direction, could realize.
Summary of the invention
Fundamental purpose of the present invention is, proposes a kind of New Measure, while the series of advantages ensureing three-terminal voltage-stabilizing; electric current is formed and monitors constantly, and implement fast tripping protection at the two ends of three terminal regulator, having thunderbolt or unexpected overvoltage; also or three damageds on end bad, fast tripping protection can be started in time, initiatively the prompting of formation sound and light; reduce the failure rate that power supply produces; formation is monitor, is simultaneously again protector, can also the power supply of voltage stabilizing; enrich the kind of power supply, make it utilization more extensive.
The measure that the present invention adopts:
1, the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring is made up of jointly lightning arrester, current monitoring circuit, front end overvoltage observation circuit, complementary circuit, fast tripping protection circuit, adjustable type rear end overvoltage observation circuit, acoustical generator, three terminal regulator.
Wherein: lightning arrester is connected between rectification output and ground wire.
Current monitoring circuit is made up of adjusting resistance, two threshold values resistance, overcurrent pilot lamp, family of power and influence's triodes: adjusting resistance is connected between the output terminal of three terminal regulator and earth terminal, threshold values resistance one is connected between the earth terminal of three terminal regulator and the base stage of family of power and influence's triode, between the base stage that threshold values resistance two is connected on family of power and influence's triode and ground wire, the emitter of family of power and influence's triode connects the earth terminal of three terminal regulator, between the collector that overcurrent pilot lamp is connected on family of power and influence's triode and ground wire.
Overvoltage observation circuit in front end is made up of front end overvoltage door stabilivolt, front end overvoltage pilot lamp, front end overvoltage starting resistance: front end overvoltage door stabilivolt, front end overvoltage pilot lamp, front end overvoltage starting resistance are connected between the base stage of the complementary pipe of NPN in rectification output and complementary circuit.
Complementary circuit is made up of NPN complementation pipe, the complementary pipe of PNP, commissure resistance, Derivative Feedback electric capacity, feedback resistance, base resistance, discharge resistance, clamp diode one: the grounded emitter line of the complementary pipe of NPN, and the emitter of the complementary pipe of PNP connects rectification and exports; Commissure resistance is connected between the collector of the complementary pipe of NPN and the base stage of the complementary pipe of PNP; Between the collector that discharge resistance is connected on the complementary pipe of PNP and ground wire; Between the base stage that base resistance is connected on the complementary pipe of NPN and ground wire; The collector of the complementary pipe of one termination PNP of Derivative Feedback electric capacity, another termination feedback resistance is to the base stage of the complementary pipe of NPN; The positive pole of clamp diode one connects quick-break silicon controlled in fast tripping protection circuit and controls pole, and the negative pole of clamp diode one connects the base stage of the complementary pipe of NPN.
Fast tripping protection circuit is made up of quick-break controllable silicon and trigger resistance: quick-break silicon controlled anode connects rectification and exports, and quick-break silicon controlled negative electrode connects the output of three terminal regulator, and trigger resistance is connected on quick-break silicon controlled anode and controls between pole.
Overvoltage observation circuit in adjustable type rear end is made up of the adjustable door in rear end and silicon controlled control circuit.
Rear end is adjustable, and door is made up of resistance inclined under adjustable resistance inclined on protective resistance inclined on door, door, collector resistance, door, door triode; Silicon controlled control circuit is made up of rear end overvoltage pilot lamp, rear end overvoltage starting resistance, control controllable silicon, clamp diode two.
On door, on inclined protective resistance and door, adjustable resistance is connected between the output of three terminal regulator and the base stage of door triode partially, between the base stage that under door, inclined resistance is connected on door triode and emitter, collector resistance is connected between the output of three terminal regulator and the collector of door triode, rear end overvoltage pilot lamp and rear end overvoltage starting resistance be connected on door triode send out pole and control silicon controlled control between pole, the positive pole of clamp diode two connects the collector of the complementary pipe of NPN, the negative pole of clamp diode two connects and controls silicon controlled anode, control silicon controlled plus earth line.
Between the collector that acoustical generator is connected on the complementary pipe of PNP and ground wire.
Namely the output terminal of three terminal regulator is the output of the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring.
2, front end overvoltage pilot lamp, rear end overvoltage pilot lamp, overcurrent pilot lamp adopt to send the different luminotron of light color.
3, Derivative Feedback electric capacity is electrodeless electric capacity.
4, family of power and influence's triode is PNP triode.
5, quick-break controllable silicon is all one-way SCR with controlling controllable silicon.
Above measure is explained as follows:
The source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring is made up of jointly lightning arrester, current monitoring circuit, front end overvoltage observation circuit, complementary circuit, fast tripping protection circuit, adjustable type rear end overvoltage observation circuit, acoustical generator, three terminal regulator.Its fundamental purpose is that realize can voltage stabilizing; monitoring and protecting can be formed again at the input end of three terminal regulator and output terminal both-end; while the series of advantages ensureing three-terminal voltage-stabilizing; carry out the monitoring to power supply; and implement fast tripping protection at the two ends of three terminal regulator; there are being thunderbolt or unexpected overvoltage; also or three damageds on end bad, fast tripping protection can be started in time, initiatively the prompting of formation sound and light; reduce the failure rate that power supply produces; formation is monitor, is simultaneously again protector, can also the power supply of voltage stabilizing; enrich the kind of power supply, make it utilization more extensive.
One, input end overvoltage forms the principle of monitoring and fast tripping protection.
At the output terminal of bridge rectifier, be alternatively that the input end of three terminal regulator has input end observation circuit, for the voltage condition of monitor input terminal.
1, meaning: the protection that this circuit has unexpected situation to be formed mainly for the external world, as thunderbolt, or the rising that the outer circuit of civil power surprisingly causes.Although there is lightning arrester product market now, suctions through the product of voltage below 100 volts and be difficult to buy, let alone be the product of less than 36 volts.
2, principle: gush pressure when rectification exports to have by thunderbolt, or when having overvoltage under fortuitous event, input end observation circuit starts immediately, opens complementary circuit, clamper controllable silicon quick-break circuit, powered-down, formation fast tripping protection.
Exceed the voltage stabilizing value of front end overvoltage door stabilivolt (5.1 in Fig. 2) at the voltage of rectification output end after, front end overvoltage pilot lamp (5.2 in Fig. 2) sends light, NPN complementation pipe (9.1 in Fig. 2) in trigger complementary circuit, because complementary circuit is designed with Derivative Feedback unit, thus response is exceedingly fast, make NPN complementation pipe (9.1 in Fig. 2) current collection very snowslide step-down, PNP complementation pipe (9.3 in Fig. 2) is saturated rapidly, its collector produces high pressure, the control pole of the quick-break controllable silicon (3.1 in Fig. 2) in clamp diode one (9.4 in Fig. 2) clamper fast tripping protection resistance, thus make quick-break silicon controlled negative electrode Non voltage output, powered-down, produce quick-break and thus form protection.
Because PNP complementation pipe (9.3 in Fig. 2) becomes in saturated process from cut-off, this pipe collector has electricity, so drive acoustical generator (9.55 in Fig. 2) sounding.
3, line feature: A, because trigger resistance (3.2 in Fig. 2) resistance of quick-break controllable silicon (3.1 in Fig. 2) is very large, all can trigger when hundreds of K, as long as so debugged the resistance of protective resistance one, just can cause starting triode saturated or to saturated change, due to quick-break silicon controlled positive feedback, so quick-break controllable silicon can towards the change of cut-off direction, (it should be noted that here, textbook is said, controllable silicon cut-off condition is when anode current reduces and is less than when maintaining electric current and can changes to cut-off direction, but concerning one-way SCR, theory and practice all illustrates, silicon controlled negative electrode is reduced to zero, controllable silicon still can be made towards the change of cut-off direction.) and controllable silicon also has strong positive feedback, therefore, coordinates with complementary circuit, can form the protection of quick-break.
B, owing to there being strong positive feedback in complementary circuit, so protection is for avalanche type, its effect one is that response is exceedingly fast, and two is that PNP triode current collection can arrive rapidly a high position, so can make quick-break silicon controlled negative electrode Non voltage output.
The feedback being fed back to differential capacitance in complementary circuit, so there is following advantage: one is when thunderbolt or overvoltage terminate, and can automatically recover, because Derivative Feedback electric capacity (9.5 in Fig. 2) has timeliness.Two is if thunderbolt or overvoltage are continuous print is transient state, but because there is positive feedback, so the time will carry out time delay, further reduces impact risk.Three is because feedback branch has two time constants of charge and discharge, and within these two times are normal, the complementary pipe of PNP is in conducting state, so now acoustical generator responds, can not produce the inefficacy of monitoring instruction because the overvoltage time is too short.Four is that Derivative Feedback electric capacity selects electrodeless electric capacity, and leakage coefficient is few, and the time of more protecting feedback is reliable.
C, voltage stabilizing value due to front end overvoltage door stabilivolt, can find easily, so threshold value height meter flexibly, also can implement very easily.
Because the complementary pipe of PNP has high-order output, so the warning of sound is very reliable when overturning.
4, the function of resisting and gushing pressure has been possessed: one is that thunderbolt is gushed pressure and first entered lightning arrester (2 in Fig. 2), will shove and introduce ground.Two is fast tripping protections of front end overvoltage.
Two, output terminal overvoltage formation monitoring illustrates with the principle of protection:
1, meaning: the one protection that this protection produces after mainly checking three terminal regulator internal damage; if three terminal regulator damages; its voltage stabilizing value exported generally can raise; then load is produced to the serious harm of overvoltage; owing to being the keypoint part of power supply usually fault infringement, so be necessary carrying out separately monitor and protecting.
2, the principle formed: after output voltage raises, the threshold voltage of adjustable door circuit is broken through, and rear end overvoltage pilot lamp (8.6 in Fig. 2) is now shinny.Start complementary circuit clamper quick-break silicon controlled and control pole, rapid powered-down and form protection, warning of simultaneously sounding, due to the strong positive feedback in complementary circuit, therefore, protection is rapid.
The door of 3, line feature analysis: A, this point protection adopts continuously adjustable triode mimic channel, so protective adaptation face is very wide.
For 78 series, three end integrated stable voltage circuit voltage stabilizing values are different, as voltage stabilizing value has 5 volts respectively, and 6 volts, 8 volts 12 volts, so the standard of overvoltage is different.And the voltage stabilizing diode of correspondence is bad coordinates therewith.Because the threshold value of three end integrated stable voltage circuit output terminal protection branch roads have employed continuously adjustable triode mimic channel; the threshold value of the voltage stabilizing diode of its simulation is selected flexibly and continuously adjustabe; thus the standard of design protection can be formulated flexibly; can not be restricted, so all three end integrated stable voltage circuits can be adapted to.The principle formed is; after on the door of door triode (8.4 in Fig. 2), inclined adjustable resistance (8.2 in Fig. 2) resistance increases; on this resistance, dividing potential drop increases; the dividing potential drop of base stage and emitter reduces; also because complementary circuit and quick-break controllable silicon have the positive feedback arranged by force, so protection is avalanche type.
Three, the explanation of overcurrent monitoring circuit: be made up of family of power and influence's triode (7.3 in Fig. 2), two threshold values resistance (7.2 in Fig. 2 and 7.5), overcurrent pilot lamp (7.6 in Fig. 2), adjusting resistances (7.1 in Fig. 2).
1, meaning: power supply is the most flimsy parts, because device damage also probably damages power supply, thunderbolt overvoltage also can damage power supply and equipment, but be no matter the fault of power supply itself or equipment breaks down, the most directly expression is exactly the electric current appearance change of power supply, when device fails or power supply itself go wrong, generation current is excessive, now can show in time, user can be safeguarded in time, this is very important, because it can reduce the spoilage of equipment and power supply, this is not only and promotes the one of power supply, for the electrical equipment that some maintenace points are few, this is vital, because maintenance is inconvenient, use again or because needs are timely, if the fault of there occurs and fail to learn in time, just be eager to look for people to keep in repair when using, this obviously brings great inconvenience to user.Therefore, the power supply that energy active monitoring is also pointed out is very necessary.
2, principle: arrange have fault break down time, can accomplish monitoring instruction.When joined device fails, electric current is increased, the electric current flowing to threshold values resistance increases, the pressure drop at threshold values resistance two (7.5 in Fig. 2) two ends is increased, conducting family of power and influence triode (7.6 in Fig. 2) conducting, overcurrent pilot lamp (7.6 in Fig. 2) sends light, with reminding user, has occurred problem.
And under normal circumstances, family of power and influence's triode can not conducting, because do not changed by the pressure drop of threshold values resistance, therefore, family of power and influence's triode can not start.
Four, front end overvoltage pilot lamp, rear end overvoltage pilot lamp, overcurrent pilot lamp adopt to send the different luminotron of light color, therefore judges it is that front end or rear end there occurs fault very well, is suitable for and reliable.
Following significant advantage is had after the invention process:
The quality of power supply, directly has influence on overall performance.Power source performance is good, then overall performance is good.Power supply be also usually the normal keypoint part damaged, so the failure rate of power supply can be greatly reduced after adopting this circuit, so be very significant.Its advantage is as follows:
1, source of stable pressure voltage regulation result is good.Can provide stable voltage, because this circuit is three end integrated stable voltage circuits, this circuit is a kind of outstanding integrated regulator, and voltage regulation result is good, and again containing multiple protection, so be a kind of outstanding mu balanced circuit.
2, reliable operation, one is three-terminal voltage-stabilizing collector is a kind of integrated stable voltage circuit of maturation, reliable operation.Two is devices that controllable silicon used in circuit and triode belong to ripe, because of but reliable, three is that each circuit peripheral circuit is simplified, so failure condition is few.
3, in this circuit, pressure is gushed to thunderbolt and has possessed the performance of tracking and monitoring at any time with unexpected overvoltage, as long as there is overvoltage, starting protection immediately, and protection is avalanche type, reliable rapidly.
4, can reliably adjust its voltage in output terminal adjustable type observation circuit, thus be applicable to different three terminal regulators.
5, front end overvoltage pilot lamp, rear end overvoltage pilot lamp, overcurrent pilot lamp adopt to send the different luminotron of light color, therefore judges it is which place goes wrong very well, use more extensive.
6, this circuit-line is more simplified, and cost is low, easily produces and debugging.
Accompanying drawing explanation
Fig. 1 is the block scheme of the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring.
In figure: 1, rectification exports; 2, lightning arrester; 3, fast tripping protection circuit; 5, front end overvoltage observation circuit; 6, three terminal regulator; 7, overcurrent monitoring circuit; 8, adjustable type rear end overvoltage observation circuit; 8.1, the adjustable door in rear end; 8.2, silicon controlled control circuit; 9, complementary circuit; 9.5, acoustical generator; 10, the output of the source of stable pressure of overvoltage fast tripping protection and overcurrent monitoring is possessed.
Fig. 2 is the circuit diagram of the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring.
In figure: 1, rectification input; 2, lightning arrester; 3.1, quick-break controllable silicon; 3.2, trigger resistance; 5.1, front end overvoltage door stabilivolt; 5.2, front end overvoltage pilot lamp; 5.3, front end overvoltage starting resistance; 6, three terminal regulator; 7.1, adjusting resistance; 7.2, threshold values resistance one; 7.3, family of power and influence's triode; 7.5, threshold values resistance two; 7.6, overcurrent pilot lamp; 8.1, inclined protective resistance on door; 8.2, inclined adjustable resistance on door; 8.3, collector resistance; 8.4, door triode; 8.5, inclined resistance under door; 8.6, rear end overvoltage pilot lamp; 8.7, rear end overvoltage starting resistance; 8.8, controllable silicon is started; 8.9, clamp diode; 9.1, NPN complementation pipe; 9.2, commissure resistance; 9.3, PNP complementation pipe; 9.4, clamp diode one; 9.5, Derivative Feedback electric capacity; 9.6, feedback resistance; 9.7, base resistance; 9.8, discharge resistance; 9.55, acoustical generator; 10, the output of the source of stable pressure of overvoltage fast tripping protection and overcurrent monitoring is possessed.
By the analogy method figure of output voltage rising when Fig. 3 is debugging three end integrated stable voltage circuit.
In figure 6, three terminal regulator; 6.1, the upper inclined resistance newly increased; 6.2, the lower inclined resistance newly increased; 6.3, voltage table; 10, the output of the source of stable pressure of overvoltage fast tripping protection and overcurrent monitoring is possessed.
Embodiment
Fig. 1,2,3 constitutes a kind of embodiment jointly.
One, option: front end overvoltage pilot lamp, rear end overvoltage pilot lamp, overcurrent pilot lamp adopt to send the different luminotron of light color.Derivative Feedback electric capacity is electrodeless electric capacity.Family of power and influence's triode is PNP triode.Quick-break controllable silicon is all one-way SCR with controlling controllable silicon.
Two, the physical circuit of the source of stable pressure of overvoltage fast tripping protection and overcurrent monitoring is possessed by welding shown in Fig. 1.
Lightning arrester (2 in Fig. 2) is connected on rectification and exports between (1 in Fig. 2) and ground wire.
Current monitoring circuit is by adjusting resistance (7.1 in Fig. 2), two threshold values resistance (7.2 in Fig. 2 and 7.5), overcurrent pilot lamp (7.6 in Fig. 2), family of power and influence's triode (7.3 in Fig. 2) forms: between the output terminal that adjusting resistance (7.1 in Fig. 2) is connected on three terminal regulator (6 in Fig. 2) and earth terminal, threshold values resistance one (7.2 in Fig. 2) is connected between the earth terminal of three terminal regulator and the base stage of family of power and influence's triode (7.3 in Fig. 2), between the base stage that threshold values resistance two (7.5 in Fig. 2) is connected on family of power and influence's triode and ground wire, the emitter of family of power and influence's triode (7.3 in Fig. 2) connects the earth terminal of three terminal regulator, between the collector that overcurrent pilot lamp (7.6 in Fig. 2) is connected on family of power and influence's triode and ground wire.
Overvoltage observation circuit in front end is made up of front end overvoltage door stabilivolt (5.1 in Fig. 2), front end overvoltage pilot lamp (5.2 in Fig. 2), front end overvoltage starting resistance (5.3 in Fig. 2): front end overvoltage door stabilivolt, front end overvoltage pilot lamp, front end overvoltage starting resistance are connected on NPN complementation in rectification output and complementary circuit and manage between the base stage of (9.1 in Fig. 2).
Complementary circuit is made up of NPN complementation pipe (9.1 in Fig. 2), PNP complementation pipe (9.3 in Fig. 2), commissure resistance (9.2 in Fig. 2), Derivative Feedback electric capacity (9.5 in Fig. 2), feedback resistance (9.6 in Fig. 2), base resistance (9.7 in Fig. 2), discharge resistance (9.8 in Fig. 2), clamp diode one (9.4 in Fig. 2): the grounded emitter line of NPN complementation pipe (9.1 in Fig. 2), and the emitter of PNP complementation pipe (9.3 in Fig. 2) connects rectification and exports; Commissure resistance (9.2 in Fig. 2) is connected between the collector of the complementary pipe of NPN and the base stage of the complementary pipe of PNP; Between the collector that discharge resistance (9.8 in Fig. 2) is connected on the complementary pipe of PNP and ground wire; Between the base stage that base resistance (9.7 in Fig. 2) is connected on the complementary pipe of NPN and ground wire; The collector of the complementary pipe of one termination PNP of Derivative Feedback electric capacity (9.5 in Fig. 2), another termination feedback resistance is to the base stage of the complementary pipe of NPN; The positive pole of clamp diode one (9.4 in Fig. 2) connects the control pole of quick-break controllable silicon in fast tripping protection circuit (3.1 in Fig. 2), and the negative pole of clamp diode one connects the base stage of the complementary pipe of NPN.
Fast tripping protection circuit is made up of quick-break controllable silicon (3.1 in Fig. 2) and trigger resistance (3.2 in Fig. 2): quick-break silicon controlled anode connects rectification and exports; quick-break silicon controlled negative electrode connects the output of three terminal regulator, and trigger resistance is connected on quick-break silicon controlled anode and controls between pole.
Overvoltage observation circuit in adjustable type rear end is made up of the adjustable door in rear end and silicon controlled control circuit.
Rear end is adjustable, and door is made up of resistance (8.5 in Fig. 2) inclined under adjustable resistance (8.2 in Fig. 2) inclined on protective resistance (8.1 in Fig. 2) inclined on door, door, collector resistance (8.3 in Fig. 2), door, door triode (8.4 in Fig. 2); Silicon controlled control circuit is made up of rear end overvoltage pilot lamp (8.6 in Fig. 2), rear end overvoltage starting resistance (8.7 in Fig. 2), control controllable silicon (8.8 in Fig. 2), clamp diode two (8.9 in Fig. 2).
On door, on inclined protective resistance (8.1 in Fig. 2) and door, adjustable resistance (8.2 in Fig. 2) is connected between the output of three terminal regulator (6 in Fig. 2) and the base stage of door triode (8.4 in Fig. 2) partially, between the base stage that under door, inclined resistance (8.5 in Fig. 2) is connected on door triode and emitter, collector resistance (8.3 in Fig. 2) is connected between the output of three terminal regulator and the collector of door triode, rear end overvoltage pilot lamp (8.6 in Fig. 2) and rear end overvoltage starting resistance (8.7 in Fig. 2) are connected between the control pole sending out pole and control controllable silicon (8.8 in Fig. 2) of door triode, the positive pole of clamp diode two (8.9 in Fig. 2) connects the collector of the complementary pipe of NPN, the negative pole of clamp diode two connects and controls silicon controlled anode, control silicon controlled plus earth line.
Between the collector that acoustical generator (9.55 in Fig. 2) is connected on PNP complementation pipe (9.3 in Fig. 2) and ground wire.
The output terminal of three terminal regulator (6 in Fig. 2) is namely the output of the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring.
Three, detect.
1, front end overvoltage protection parameter is adjusted: (1), interchange of breaking; the source of stable pressure output terminal possessing overvoltage fast tripping protection and overcurrent monitoring is connected on oscillographic; rectification output end is clicked by the DC voltage of 100 volts; oscilloscope display exports and substantially reduces to zero by normal voltage; now, front end overvoltage pilot lamp (5.2 in Fig. 2) is luminous.
The current collection surveying PNP complementation pipe (9.3 in Fig. 2) in complementary circuit with the voltage gear of multimeter is very high-order.Acoustical generator (9.55 in Fig. 2) sounding.
If the output possessing the source of stable pressure of overvoltage fast tripping protection and overcurrent monitoring is non-vanishing, then should debug the voltage stabilizing value of front end overvoltage door stabilivolt (5.1 in Fig. 2), or the resistance of adjustment front end ground overvoltage starting resistance (5.3 in Fig. 2).Or the polarity weldering of clamp diode one (9.4 in Fig. 2) is anti-.
(2), the DC voltage of 100 volts of breaking, oscilloscope display output end voltage is normal.
2, to three terminal regulator output terminal overvoltage monitoring and the detection protected and debugging.
Determine the magnitude of voltage that adjustable mu balanced circuit is formed.The adjustable inclined resistance (8.2 in Fig. 2) of adjustment door, its rule is that resistance is larger, and it is higher that voltage stabilizing exports the voltage punctured, otherwise lower.
The output terminal of three terminal regulator is measured with voltage table.Determine the adjustable voltage that adjustable door circuit is formed, as higher than normal voltage stabilizing value 10% volt, protection act.
Namely A, the impaired situation of simulation three terminal regulator are that after simulation damages, output voltage increases, (see Fig. 3)
Method disconnects three terminal regulator earth terminal, and the lower inclined resistance (6.2 in Fig. 3) that a resistance of connecting between this end with ground is namely newly-increased, be connected the namely newly-increased upper inclined resistance (6.1 in Fig. 3) of another resistance at three terminal regulator earth terminal with output terminal simultaneously, at this moment the voltage of output terminal can improve, adjust the value of two resistance, as the resistance of newly-increased lower inclined resistance is increased, (maybe the resistance of upper inclined resistance being reduced), the voltage allowing the output terminal of three terminal regulator increase reaches desirable value, as 10%.At this moment voltage table is designated as high as 10% voltage.
B, when output voltage overvoltage, after exceeding the adjustable voltage that adjustable door circuit formed, rear end overvoltage pilot lamp (8.6 in Fig. 2) is luminous, starts complementary circuit, and the current collection surveying PNP complementation pipe (9.3 in Fig. 2) with the voltage gear of multimeter is very high-order.Acoustical generator (9.55 in Fig. 2) sounding.
The lower inclined resistance that short circuit is newly-increased, now rear end overvoltage pilot lamp is still bright.
3, to the detection of complementary circuit:
The collector of PNP complementation pipe (9.3 in Fig. 2) is connected, ground wire input end grounding with oscillographic y-axis input end.
Go with mains terminals contact resistance the base stage triggering NPN complementation pipe (9.1 in Fig. 2), at this moment oscillograph has low level rapidly to uprise the display of position, if inadequate rapidly, is then feedback circuit open circuit.Or the value of Derivative Feedback electric capacity (9.5 in Fig. 2) is too little.
At this moment acoustical generator (9.55 in Fig. 2) has sound sound.
4, overcurrent protection is detected: be connected in the output of three-terminal voltage-stabilizing power supply of monitor-type fast tripping protection with the 10 Europe resistance of 5 watts; check that whether overcurrent monitoring pilot lamp (7.6 in Fig. 2) is luminous, otherwise the adjustment resistance of two threshold values resistance (7.2 in Fig. 2 and 7.5) or the resistance of adjusting resistance (7.1 in Fig. 2).
Claims (5)
1. possess the source of stable pressure of overvoltage fast tripping protection and overcurrent monitoring, it is characterized in that: be jointly made up of lightning arrester, current monitoring circuit, front end overvoltage observation circuit, complementary circuit, fast tripping protection circuit, adjustable type rear end overvoltage observation circuit, acoustical generator, three terminal regulator;
Wherein: lightning arrester is connected between rectification output and ground wire;
Current monitoring circuit is made up of adjusting resistance, two threshold values resistance, overcurrent pilot lamp, family of power and influence's triodes: adjusting resistance is connected between the output terminal of three terminal regulator and earth terminal, threshold values resistance one is connected between the earth terminal of three terminal regulator and the base stage of family of power and influence's triode, between the base stage that threshold values resistance two is connected on family of power and influence's triode and ground wire, the emitter of family of power and influence's triode connects the earth terminal of three terminal regulator, between the collector that overcurrent pilot lamp is connected on family of power and influence's triode and ground wire;
Overvoltage observation circuit in front end is made up of front end overvoltage door stabilivolt, front end overvoltage pilot lamp, front end overvoltage starting resistance: front end overvoltage door stabilivolt, front end overvoltage pilot lamp, front end overvoltage starting resistance are connected between the base stage of the complementary pipe of NPN in rectification output and complementary circuit;
Complementary circuit is made up of NPN complementation pipe, the complementary pipe of PNP, commissure resistance, Derivative Feedback electric capacity, feedback resistance, base resistance, discharge resistance, clamp diode one: the grounded emitter line of the complementary pipe of NPN, and the emitter of the complementary pipe of PNP connects rectification and exports; Commissure resistance is connected between the collector of the complementary pipe of NPN and the base stage of the complementary pipe of PNP; Between the collector that discharge resistance is connected on the complementary pipe of PNP and ground wire; Between the base stage that base resistance is connected on the complementary pipe of NPN and ground wire; The collector of the complementary pipe of one termination PNP of Derivative Feedback electric capacity, another termination feedback resistance is to the base stage of the complementary pipe of NPN; The positive pole of clamp diode one connects quick-break silicon controlled in fast tripping protection circuit and controls pole, and the negative pole of clamp diode one connects the base stage of the complementary pipe of NPN;
Fast tripping protection circuit is made up of quick-break controllable silicon and trigger resistance: quick-break silicon controlled anode connects rectification and exports, and quick-break silicon controlled negative electrode connects the output of three terminal regulator, and trigger resistance is connected on quick-break silicon controlled anode and controls between pole;
Overvoltage observation circuit in adjustable type rear end is made up of the adjustable door in rear end and silicon controlled control circuit;
Rear end is adjustable, and door is made up of resistance inclined under adjustable resistance inclined on protective resistance inclined on door, door, collector resistance, door, door triode; Silicon controlled control circuit is made up of rear end overvoltage pilot lamp, rear end overvoltage starting resistance, control controllable silicon, clamp diode two;
On door, on inclined protective resistance and door, adjustable resistance is connected between the output of three terminal regulator and the base stage of door triode partially, between the base stage that under door, inclined resistance is connected on door triode and emitter, collector resistance is connected between the output of three terminal regulator and the collector of door triode, rear end overvoltage pilot lamp and rear end overvoltage starting resistance be connected on door triode send out pole and control silicon controlled control between pole, the positive pole of clamp diode two connects the collector of the complementary pipe of NPN, the negative pole of clamp diode two connects and controls silicon controlled anode, control silicon controlled plus earth line,
Between the collector that acoustical generator is connected on the complementary pipe of PNP and ground wire;
Namely the output terminal of three terminal regulator is the output of the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring.
2. the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring according to claim 1, is characterized in that: front end overvoltage pilot lamp, rear end overvoltage pilot lamp, overcurrent pilot lamp adopt to send the different luminotron of light color.
3. the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring according to claim 1, is characterized in that: Derivative Feedback electric capacity is electrodeless electric capacity.
4. the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring according to claim 1, is characterized in that: family of power and influence's triode is PNP triode.
5. the source of stable pressure possessing overvoltage fast tripping protection and overcurrent monitoring according to claim 1, is characterized in that: quick-break controllable silicon is all one-way SCR with controlling controllable silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520613170.7U CN204883459U (en) | 2015-08-15 | 2015-08-15 | Steady voltage source that possesses excessive pressure quick -break protection and overflow monitoring |
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|---|---|---|---|
| CN201520613170.7U CN204883459U (en) | 2015-08-15 | 2015-08-15 | Steady voltage source that possesses excessive pressure quick -break protection and overflow monitoring |
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| CN204883459U true CN204883459U (en) | 2015-12-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116754872A (en) * | 2023-06-19 | 2023-09-15 | 深圳市亿宾微电子有限公司 | Voltage stabilizer testing method, intelligent terminal and storage medium |
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2015
- 2015-08-15 CN CN201520613170.7U patent/CN204883459U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116754872A (en) * | 2023-06-19 | 2023-09-15 | 深圳市亿宾微电子有限公司 | Voltage stabilizer testing method, intelligent terminal and storage medium |
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