CN211296586U - 0-220V DC signal source - Google Patents
0-220V DC signal source Download PDFInfo
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- CN211296586U CN211296586U CN201922236992.9U CN201922236992U CN211296586U CN 211296586 U CN211296586 U CN 211296586U CN 201922236992 U CN201922236992 U CN 201922236992U CN 211296586 U CN211296586 U CN 211296586U
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- signal source
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- resistor
- triode
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- 239000003990 capacitor Substances 0.000 claims abstract description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a 0-220V direct current signal source, including power transformer T, silicon rectifier bridge, filter capacitor C1, stabilivolt V5, resistance R1, variable resistance RP1, triode V7 and many rings of formula adjustable potentiometre RP 2; an alternating current 220V power supply is input into the power transformer T, the output end of the power transformer T is connected with two input ends of a silicon rectifier bridge, two output ends of the silicon rectifier bridge are connected with two ends of a filter capacitor C1, and one end of the filter capacitor C1 is grounded; the resistor R1, the variable resistor RP1 and the voltage regulator tube V5 are connected in series and then connected to the two ends of the filter capacitor C1; the resistor R1 and the variable resistor RP1 are connected in series and then are connected between the base electrode and the collector electrode of the triode V7; an emitting electrode of the triode V7 is connected to one fixed end of the multi-turn adjustable potentiometer RP2, and the other fixed end of the multi-turn potentiometer RP2 is grounded; the voltage between the fixed end and the adjustable end of the multi-turn adjustable potentiometer RP2 is the output voltage of the direct current signal source. The utility model discloses simple structure, portable ability are good, voltage resolution is high, control range is wide, with low costs and stable performance.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, specifically be a 0-220V direct current signal source.
Background
In the field of electronics, a variety of signal sources are often required, both ac and dc. When some onboard computers are repaired in our factory, because of the specific signal input requirements of the onboard computers, the existing direct current signal source or voltage resolution is insufficient, or the price is high, or the adjustment range is insufficient, or the portability is poor, so that the onboard computers cannot universally meet the requirements of repairing inside and outside fields, especially cannot meet the requirements of repairing in the field and other outside field environments.
Disclosure of Invention
In order to solve the problems existing in the prior art, the utility model provides a 0-220V direct current signal source which has simple structure, good portability, high voltage resolution, wide adjusting range, low cost and stable performance.
The technical scheme of the utility model is that:
the 0-220V direct current signal source is characterized in that: the power supply comprises a power transformer T, a silicon rectifier bridge, a filter capacitor C1, a voltage regulator tube V5, a resistor R1, a variable resistor RP1, a triode V7 and a multi-turn adjustable potentiometer RP 2;
an alternating current 220V power supply is input into the power transformer T, the output end of the power transformer T is connected with two input ends of a silicon rectifier bridge, two output ends of the silicon rectifier bridge are connected with two ends of a filter capacitor C1, and one end of the filter capacitor C1 is grounded;
the resistor R1, the variable resistor RP1 and the voltage regulator tube V5 are connected in series and then connected to the two ends of the filter capacitor C1;
the resistor R1 and the variable resistor RP1 are connected in series and then are connected between the base electrode and the collector electrode of the triode V7;
an emitting electrode of the triode V7 is connected to one fixed end of the multi-turn adjustable potentiometer RP2, and the other fixed end of the multi-turn potentiometer RP2 is grounded;
the voltage between the fixed end and the adjustable end of the multi-turn adjustable potentiometer RP2 is the output voltage of the direct current signal source.
In a further preferred embodiment, the 0-220V dc signal source is characterized in that: a fuse FU1 is arranged between the filter capacitor C1 and the collector electrode of the triode V7, and the adjustable end of the multi-turn adjustable potentiometer RP2 is connected with the fuse FU 2.
In a further preferred embodiment, the 0-220V dc signal source is characterized in that: and a capacitor C2 is connected with two ends of the voltage regulator tube V5.
In a further preferred embodiment, the 0-220V dc signal source is characterized in that: the voltmeter PV1 is connected with two ends of the resistor R1, the variable resistor RP1 and the voltage regulator tube V5 after being connected in series and is used for indicating rectified voltage; the voltmeter PV2 is connected between the adjustable end of the multi-turn adjustable potentiometer RP2 and the ground, and indicates the output voltage of the signal source.
Advantageous effects
The utility model has the advantages that: the utility model relates to a rationally, can export stable direct current signal through silicon rectifier bridge, stabilivolt, triode, its circuit is simple and need not too many precision component can satisfy the demand of repairing the on-board computer, also can be as the signal source of other instrument debugging usefulness, has characteristics such as small, light in weight, portability are good, compact structure is firm, dependable performance, with low costs.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The following detailed description of embodiments of the invention is intended to be illustrative, and not to be construed as limiting the invention.
As shown in fig. 1, the 0-220V dc signal source in this embodiment includes: indicator light H1, power transformer T, silicon rectifier diode IN5404 x 4, capacitors C1 and C2, fuses FU1 and FU2, voltmeters PV1 and PV2, resistor R1, variable resistor RP1, multi-turn adjustable potentiometer RP2, triode V7, voltage regulator V5 and other components. The basic principle is that after 220V alternating voltage is output by a rectifying circuit, a filter circuit and a voltage stabilizing circuit, a multi-ring type adjustable potentiometer is adopted for sampling, and a stable direct current voltage signal is obtained.
An alternating current 220V power supply is input into the power transformer T, a silicon rectifier bridge is formed by silicon rectifier diodes IN 5404X 4, the output end of the power transformer T is connected with two input ends of the silicon rectifier bridge, two output ends of the silicon rectifier are connected with two ends of a filter capacitor C1, and one end of the filter capacitor C1 is grounded.
The resistor R1, the variable resistor RP1 and the voltage regulator tube V5 are connected in series to form a basic voltage stabilizing circuit, the basic voltage stabilizing circuit is connected to two ends of the filter capacitor C1, and the direct-current voltage obtained after rectification and filtering forms a stable reference voltage Ub on the voltage regulator tube V5. And a capacitor C2 is connected with two ends of the voltage regulator tube V5.
The resistor R1 and the variable resistor RP1 are connected in series and then are connected between the base electrode and the collector electrode of the triode V7; an emitting electrode of the triode V7 is connected to one fixed end of the multi-turn adjustable potentiometer RP2, and the other fixed end of the multi-turn potentiometer RP2 is grounded; the voltage between the fixed end and the adjustable end of the multi-turn adjustable potentiometer RP2 is the output voltage of the direct current signal source.
A fuse FU1 is arranged between the filter capacitor C1 and the collector electrode of the triode V7, and the adjustable end of the multi-turn adjustable potentiometer RP2 is connected with the fuse FU 2. The voltmeter PV1 is connected with two ends of the resistor R1, the variable resistor RP1 and the voltage regulator tube V5 after being connected in series and is used for indicating rectified voltage; the voltmeter PV2 is connected between the adjustable end of the multi-turn adjustable potentiometer RP2 and the ground, and indicates the output voltage of the signal source.
When the power switch Q1 is turned on, the indicator light H1 is lighted, the voltmeter PV1 indicates the rectified voltage, and the voltmeter PV2 indicates the signal source output voltage UP2, the value of which can be obtained by the adjustable potentiometer RP 2.
When the output voltage UP2 changes, since Ub is a stable value, the emitter voltage Ube changes with UP2, and assuming that UP2 decreases, Ube increases, so that the base current Ib and the collector current Ic of the transistor increase, and the output voltage UP2 is increased as IeRP2, thereby maintaining the output voltage substantially unchanged.
UP2↓→Ube↑→Ib↑→Ic↑→UP2↑
When the output voltage UP2 rises, the auto-tuning process is reversed.
The utility model relates to a rationally, easy operation is convenient, has not only solved voltage resolution ratio not enough, the not enough problem of control range, has still improved work efficiency greatly.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (4)
1. A 0-220V dc signal source, comprising: the power supply comprises a power transformer T, a silicon rectifier bridge, a filter capacitor C1, a voltage regulator tube V5, a resistor R1, a variable resistor RP1, a triode V7 and a multi-turn adjustable potentiometer RP 2;
an alternating current 220V power supply is input into the power transformer T, the output end of the power transformer T is connected with two input ends of a silicon rectifier bridge, two output ends of the silicon rectifier bridge are connected with two ends of a filter capacitor C1, and one end of the filter capacitor C1 is grounded;
the resistor R1, the variable resistor RP1 and the voltage regulator tube V5 are connected in series and then connected to the two ends of the filter capacitor C1;
the resistor R1 and the variable resistor RP1 are connected in series and then are connected between the base electrode and the collector electrode of the triode V7;
an emitting electrode of the triode V7 is connected to one fixed end of the multi-turn adjustable potentiometer RP2, and the other fixed end of the multi-turn potentiometer RP2 is grounded;
the voltage between the fixed end and the adjustable end of the multi-turn adjustable potentiometer RP2 is the output voltage of the direct current signal source.
2. The signal source of claim 1, wherein: a fuse FU1 is arranged between the filter capacitor C1 and the collector electrode of the triode V7, and the adjustable end of the multi-turn adjustable potentiometer RP2 is connected with the fuse FU 2.
3. The signal source of claim 1, wherein: and a capacitor C2 is connected with two ends of the voltage regulator tube V5.
4. The signal source of claim 1, wherein: the voltmeter PV1 is connected with two ends of the resistor R1, the variable resistor RP1 and the voltage regulator tube V5 after being connected in series and is used for indicating rectified voltage; the voltmeter PV2 is connected between the adjustable end of the multi-turn adjustable potentiometer RP2 and the ground, and indicates the output voltage of the signal source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922236992.9U CN211296586U (en) | 2019-12-13 | 2019-12-13 | 0-220V DC signal source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922236992.9U CN211296586U (en) | 2019-12-13 | 2019-12-13 | 0-220V DC signal source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211296586U true CN211296586U (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922236992.9U Active CN211296586U (en) | 2019-12-13 | 2019-12-13 | 0-220V DC signal source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211296586U (en) |
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2019
- 2019-12-13 CN CN201922236992.9U patent/CN211296586U/en active Active
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