CN105896958B - The power module of mine safety monitoring sensor - Google Patents
The power module of mine safety monitoring sensor Download PDFInfo
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- CN105896958B CN105896958B CN201610258092.2A CN201610258092A CN105896958B CN 105896958 B CN105896958 B CN 105896958B CN 201610258092 A CN201610258092 A CN 201610258092A CN 105896958 B CN105896958 B CN 105896958B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000005538 encapsulation Methods 0.000 claims abstract description 5
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 111
- 239000003245 coal Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Direct Current Feeding And Distribution (AREA)
- Amplifiers (AREA)
Abstract
The present invention provides a kind of power module of mine safety monitoring sensor, for using the module of epoxy resin entirety encapsulation；Including soft starting circuit, anti-interference process circuit, the first and second power output circuits；The power input of soft starting circuit external DC9~24.5V power supply when using；The power input of anti-interference process circuit is electrically connected with the power output end of soft starting circuit；The power input of first power output circuit and the power input of second source output circuit are electrically connected with the power output end of anti-interference process circuit；The power input of anti-interference process circuit is its power output end；Power output end output+3V the DC power supply of first power output circuit；Power output end output+5.5V the DC power supply of second source output circuit.The present invention is applied in mine safety monitoring sensor, can effectively improve sensor anti-electromagnetic interference capability, solve the problems, such as easily to restart when sensor is disturbed.
Description
Technical field
The present invention relates to the sensor fields of mine safety monitoring, and in particular to a kind of mine safety monitoring sensor
Power module.
Background technique
Underground coal mine is typically provided with safety monitoring system, and the first link of safety monitoring system is a large amount of such as dioxy
Change various gas sensors, temperature, temperature sensor, the optical sensors such as carbon, carbon monoxide, methane etc. various types of biographies
Sensor.The more large electric equipment of underground coal mine is also easy to produce burst of pulses, the interference such as surge at present；Coal mine downhole safety monitoring system
The sensor of system generallys use powers over long distances, and route is interfered vulnerable to coupling, induction etc., in addition current coal mine downhole safety
The sensor of monitoring system itself EMC(Electro Magnetic Compatibility) interference free performance is poor, automatic weight can be generated when being disturbed serious
Phenomenon is opened, steady operation is unable to, so that the interference free performance for seriously affecting coal mine downhole safety monitoring system entirety and work are surely
It is qualitative.Why anti-interference ability is not strong and rear automatic in the presence of being disturbed for the sensor of coal mine downhole safety monitoring system at present
Restart phenomenon, important reason is to pass through enforceable properties of product to meet the safety standard for being applied to use under mine
Test and explosion-proof test, the power module of sensor generally use the structure that soft-start module adds DC/DC module, do not have preferably
Anti-electromagnetic interference capability, and mine lower sensor must be made into essential safe type product, thus must have certain over-voltage
With overcurrent protection ability, such design negative effect is so that sensor easily restarts phenomenon after being interfered.Thus, for
The above problem develops a kind of pressure standard requirements that can either meet underground coal mine application, and can effectively improve mine safety
The anti-interference ability of monitoring sensor, prevent sensor restart phenomenon generation sensor-use source module, it appears very
It is necessary.
Summary of the invention
The purpose of the present invention is: the problems of the prior art are directed to, a kind of electricity of mine safety monitoring sensor is provided
Source module can effectively improve sensor anti-electromagnetic interference capability by the use of the power module, solve sensor and be disturbed
When the problem of easily restarting, to improve mine safety monitoring system entirety anti-electromagnetic interference capability and job stability.
The technical scheme is that the power module of mine safety monitoring sensor of the invention, design feature
Be: it is the module using epoxy resin entirety encapsulation；Including soft starting circuit, anti-interference process circuit, the output of the first power supply
Circuit and second source output circuit；
Above-mentioned soft starting circuit, anti-interference process circuit, the first power output circuit and second source output circuit are equal
Equipped with power input, power output end and ground terminal；
The power input of soft starting circuit external DC9~24.5V power supply when using；The power supply of anti-interference process circuit is defeated
Enter end to be electrically connected with the power output end of soft starting circuit；The power input and second source of first power output circuit export
The power input of circuit is electrically connected with the power output end of anti-interference process circuit；The power input of anti-interference process circuit
End is its power output end；Power output end output+3V the DC power supply of first power output circuit；Second source output electricity
Power output end output+5.5V the DC power supply on road；The ground terminal of each circuit is grounded.
Further embodiment is: above-mentioned soft starting circuit includes diode D1, diode D2, triode T1, triode
T2, triode T3, the three terminal regulator N1 of model LM285, capacitor C3, capacitor C9, resistance R1, resistance R2, resistance R3, resistance
R4 and resistance R5；
The anode of diode D1 is the anode of the power input of soft starting circuit；The anode and diode of diode D2
The cathode of D1 concatenates；The cathode of diode D2, one end of resistance R1, the emitter-base bandgap grading of one end of resistance R2 and triode T2 are conllinear；
The other end of resistance R1, the base stage of triode T2, the emitter-base bandgap grading of one end of capacitor C3 and triode T1 are conllinear；The collection of triode T2
Electrode, the base stage of triode T1, the other end of the collector of triode T3 and capacitor C3 are conllinear；The other end, the electricity of resistance R2
The cathode for holding one end of C9, one end of resistance R3 and three terminal regulator N1 is conllinear；Another termination triode T3's of resistance R3
Base stage；One end of the emitter-base bandgap grading of triode T3, one end of resistance R4 and resistance R5 is conllinear；The other end of resistance R4, resistance R5
The other end of the other end, the anode of three terminal regulator N1 and capacitor C9 forms a common junction due to conllinear, this is public to connect
Point is the ground terminal of soft starting circuit；The collector of triode T1 is the power output end of soft starting circuit.
Further embodiment is: above-mentioned anti-interference process circuit includes electrolytic capacitor C5 and capacitor C6；
The anode of above-mentioned electrolytic capacitor C5 and one end of capacitor C6 form a common junction due to conllinear, this is public to connect
Point is the power input of anti-interference process circuit, is also the power output end of anti-interference process circuit；Electrolytic capacitor C5's
The other end of cathode and capacitor C6 form a common junction because conllinear, which is connecing for anti-interference process circuit
Ground terminal.
Further embodiment is: the first above-mentioned power output circuit includes the power supply chip U1 of model MP2456, two
Pole pipe D3, inductance L1, capacitor C4, capacitor C7, capacitor C8, capacitor C10, resistance R6, resistance R7 and resistance R8 composition；Power supply chip
U1 has 1 to No. 6 pin；
No. 5 pins of one end of capacitor C4, one end of resistance R6 and power supply chip U1 formed due to conllinear one it is public
Contact, the common junction are the power input of the first power output circuit；The 4 of another termination power supply chip U1 of resistance R6
Number pin；No. 1 pin of power supply chip U1 connects with one end of capacitor C7；The other end of capacitor C7, No. 6 of power supply chip U1 are drawn
One end of foot, the cathode of diode D3 and inductance L1 is conllinear；No. 3 pins of power supply chip U1, one end of capacitor C10, resistance
One end of R7 and one end of resistance R8 are conllinear；The other end of inductance L1, one end of capacitor C8, capacitor C10 the other end and
The other end of resistance R8 forms a common junction because conllinear, which is that the power supply of the first power output circuit is defeated
Outlet；The anode of diode D3, the other end of capacitor C8, the other end of resistance R7, capacitor C4 the other end and power supply chip
No. 2 pins of U1 form a common junction because conllinear, which is the ground terminal of the first power output circuit.
Further embodiment is: above-mentioned second source output circuit includes the power supply chip U2 of model MP2456, two
Pole pipe D4, inductance L2, capacitor C1, capacitor C2, capacitor C11, capacitor C12, resistance R9, resistance R10 and resistance R11 composition；Power supply
Chip U2 has 1 to No. 6 pin.
No. 5 pins of one end of capacitor C1, one end of resistance R9 and power supply chip U2 formed due to conllinear one it is public
Contact, the common junction are the power input of second source output circuit；The 4 of another termination power supply chip U2 of resistance R9
Number pin；No. 1 pin of power supply chip U2 connects with one end of capacitor C2；The other end of capacitor C2, No. 6 of power supply chip U2 are drawn
One end of foot, the cathode of diode D4 and inductance L2 is conllinear；No. 3 pins of power supply chip U2, one end of capacitor C12, resistance
One end of R10 and one end of resistance R11 are conllinear；The other end of inductance L2, one end of capacitor C11, capacitor C12 the other end with
And the other end of resistance R11 forms a common junction because conllinear, which is the electricity of second source output circuit
Source output terminal；The anode of diode D4, the other end of capacitor C11, the other end of resistance R10, capacitor C1 the other end and electricity
No. 2 pins of source chip U1 form a common junction because conllinear, which is connecing for second source output circuit
Ground terminal.
The present invention has the effect of positive: the power module of mine safety monitoring sensor of the invention, by soft start
Circuit, anti-jamming circuit and two road power output circuit components；It after soft starting circuit by being arranged by electrolytic capacitor and electricity
The anti-jamming circuit for holding composition, electrolytic capacitor can filter out a large amount of High-frequency Interference when use, while electrolytic capacitor is first as energy storage
Part, providing electric energy by electric discharge in the moment that sensor is restarted can effectively prevent equipment to restart；So as to effectively improve sensing
Device anti-electromagnetic interference capability solves the problems, such as easily to restart when sensor is disturbed；And then improve mine safety monitoring system
The whole anti-electromagnetic interference capability of system and job stability.Meanwhile power module of the invention uses epoxy resin entirety encapsulation shape
Formula is installed in sensor device, can satisfy relevant pressure safety standard, is suitable for underground coal mine and is used.
Detailed description of the invention
Fig. 1 is the principle of the present invention schematic block diagram；
Fig. 2 is electrical schematic diagram of the invention.
Appended drawing reference in above-mentioned attached drawing is as follows:
Soft starting circuit 1, anti-interference process circuit 2, the first power output circuit 3, second source output circuit 4.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
(embodiment 1)
See Fig. 1 and Fig. 2, the power module of the mine safety monitoring sensor of the present embodiment, for using epoxy resin
The circuit module of whole encapsulation；It is mainly by soft starting circuit 1, anti-interference process circuit 2, the first power output circuit 3 and
Two power output circuits 4 composition.
Soft starting circuit 1, anti-interference process circuit 2, the first power output circuit 3 and second source output circuit 4 are all provided with
There are power input, power output end and ground terminal.
The power input of soft starting circuit 1 external DC9~24.5V power supply Vin when using；Anti-interference process circuit 2
Power input is electrically connected with the power output end of soft starting circuit 1；The power input and second of first power output circuit 3
The power input of power output circuit 4 is electrically connected with the power output end of anti-interference process circuit 2；Anti-interference process circuit
2 power input is its power output end；Power output end output+3V the DC power supply of first power output circuit 3；The
Power output end output+5.5V the DC power supply of two power output circuits 4；The ground terminal of each circuit is grounded.
Soft starting circuit 1 is mainly by diode D1, diode D2, triode T1, triode T2, triode T3, model
Three terminal regulator N1, capacitor C3, capacitor C9, resistance R1, resistance R2, resistance R3, resistance R4 and the resistance R5 composition of LM285.
The anode of diode D1 is the anode of the power input of soft starting circuit 1；Anode and two poles of diode D2
The cathode of pipe D1 concatenates；The cathode of diode D2, one end of resistance R1, the emitter-base bandgap grading of one end of resistance R2 and triode T2 are total
Line；The other end of resistance R1, the base stage of triode T2, the emitter-base bandgap grading of one end of capacitor C3 and triode T1 are conllinear；Triode T2
Collector, the base stage of triode T1, the other end of the collector of triode T3 and capacitor C3 it is conllinear；Resistance R2's is another
End, one end of capacitor C9, the cathode of one end of resistance R3 and three terminal regulator N1 are conllinear；Another termination triode of resistance R3
The base stage of T3；One end of the emitter-base bandgap grading of triode T3, one end of resistance R4 and resistance R5 is conllinear；The other end, the resistance of resistance R4
The other end of the other end of R5, the anode of three terminal regulator N1 and capacitor C9 forms a common junction because conllinear, the public affairs
Contact is the ground terminal of soft starting circuit 1 altogether；The collector of triode T1 is the power output end of soft starting circuit 1；Three
Hold the reference of voltage-stablizer N1 extremely vacant.
Anti-interference process circuit 2 is mainly made of electrolytic capacitor C5 and capacitor C6.
The anode of electrolytic capacitor C5 and one end of capacitor C6 form a common junction because conllinear, which is
The power input of anti-interference process circuit 2 is also the power output end of anti-interference process circuit 2；The cathode of electrolytic capacitor C5
A common junction is formed because conllinear with the other end of capacitor C6, which is the ground connection of anti-interference process circuit 2
End.In use, electrolytic capacitor C5 and capacitor C6 can filter out a large amount of High-frequency Interference, while electrolytic capacitor C5 is as energy storage member
Part, providing electric energy by electric discharge in the moment that sensor is restarted can effectively prevent equipment to restart；So as to effectively improve sensing
Device anti-electromagnetic interference capability overcomes the problems, such as easily to restart when sensor is disturbed.
First power output circuit 3 is mainly by the power supply chip U1 of model MP2456, diode D3, inductance L1, capacitor
C4, capacitor C7, capacitor C8, capacitor C10, resistance R6, resistance R7 and resistance R8 composition；Power supply chip U1 has 1 to No. 6 pin.
No. 5 pins (end VIN) of one end of capacitor C4, one end of resistance R6 and power supply chip U1 form one because conllinear
A common junction, the common junction are the power input of the first power output circuit 3；Another termination power core of resistance R6
No. 4 pins (end EN) of piece U1；No. 1 pin (end BST) of power supply chip U1 connects with one end of capacitor C7；Capacitor C7's is another
The one end at end, No. 6 pins (end SW) of power supply chip U1, the cathode of diode D3 and inductance L1 is conllinear；The 3 of power supply chip U1
Number pin (end FB), one end of capacitor C10, one end of one end of resistance R7 and resistance R8 are conllinear；The other end, the electricity of inductance L1
The other end for holding one end of C8, the other end of capacitor C10 and resistance R8 forms a common junction because conllinear, this is public to connect
Point is the power output end of the first power output circuit 3；Output end output+3V the DC power supply；Anode, the electricity of diode D3
Hold No. 2 pins (end GND) of the other end of C8, the other end of resistance R7, the other end of capacitor C4 and power supply chip U1 because altogether
Line and form a common junction, which is the ground terminal of the first power output circuit 3.
Second source output circuit 4 is mainly by the power supply chip U2 of model MP2456, diode D4, inductance L2, capacitor
C1, capacitor C2, capacitor C11, capacitor C12, resistance R9, resistance R10 and resistance R11 composition；Power supply chip U2 has 1 to No. 6 and draws
Foot.
No. 5 pins (end VIN) of one end of capacitor C1, one end of resistance R9 and power supply chip U2 form one because conllinear
A common junction, the common junction are the power input of second source output circuit 4；Another termination power core of resistance R9
No. 4 pins (end EN) of piece U2；No. 1 pin (end BST) of power supply chip U2 connects with one end of capacitor C2；Capacitor C2's is another
The one end at end, No. 6 pins (end SW) of power supply chip U2, the cathode of diode D4 and inductance L2 is conllinear；The 3 of power supply chip U2
Number pin (end FB), one end of capacitor C12, one end of one end of resistance R10 and resistance R11 are conllinear；The other end of inductance L2,
The other end of one end of capacitor C11, the other end of capacitor C12 and resistance R11 forms a common junction because conllinear, the public affairs
Contact is the power output end of second source output circuit 4 altogether；Output end output+5.5V the DC power supply；Diode D4's
No. 2 pins of anode, the other end of capacitor C11, the other end of resistance R10, the other end of capacitor C1 and power supply chip U1
(end GND) forms a common junction because conllinear, which is the ground terminal of second source output circuit 4.
Above embodiments are the explanations to a specific embodiment of the invention, rather than limitation of the present invention, related technology
The technical staff in field without departing from the spirit and scope of the present invention, can also make various transformation and variation and obtain
To corresponding equivalent technical solution, therefore all equivalent technical solutions should be included into patent protection model of the invention
It encloses.
Claims (1)
1. a kind of power module of mine safety monitoring sensor, it is characterised in that: it is using epoxy resin entirety encapsulation
Module；Including soft starting circuit, anti-interference process circuit, the first power output circuit and second source output circuit；
Soft starting circuit, anti-interference process circuit, the first power output circuit and the second source output circuit is equipped with
Power input, power output end and ground terminal；
The power input of soft starting circuit external DC9~24.5V power supply when using；The power input of anti-interference process circuit
It is electrically connected with the power output end of soft starting circuit；The power input and second source output circuit of first power output circuit
Power input be electrically connected with the power output end of anti-interference process circuit；The power input of anti-interference process circuit is
For its power output end；Power output end output+3V the DC power supply of first power output circuit；Second source output circuit
Power output end output+5.5V DC power supply；The ground terminal of each circuit is grounded；
The soft starting circuit includes diode D1, diode D2, triode T1, triode T2, triode T3, model
Three terminal regulator N1, capacitor C3, capacitor C9, resistance R1, resistance R2, resistance R3, resistance R4 and the resistance R5 of LM285；
The anode of diode D1 is the anode of the power input of soft starting circuit；The anode of diode D2 is with diode D1's
Cathode concatenation；The cathode of diode D2, one end of resistance R1, the emitter-base bandgap grading of one end of resistance R2 and triode T2 are conllinear；Resistance
The other end of R1, the base stage of triode T2, the emitter-base bandgap grading of one end of capacitor C3 and triode T1 are conllinear；The current collection of triode T2
Pole, the base stage of triode T1, the other end of the collector of triode T3 and capacitor C3 are conllinear；The other end, the capacitor of resistance R2
The cathode of one end of C9, one end of resistance R3 and three terminal regulator N1 is conllinear；The base of another termination triode T3 of resistance R3
Pole；One end of the emitter-base bandgap grading of triode T3, one end of resistance R4 and resistance R5 is conllinear；The other end of resistance R4, resistance R5 it is another
The other end of one end, the anode of three terminal regulator N1 and capacitor C9 forms a common junction because conllinear, the common junction
The as ground terminal of soft starting circuit；The collector of triode T1 is the power output end of soft starting circuit；
The anti-interference process circuit includes electrolytic capacitor C5 and capacitor C6；
The anode of the electrolytic capacitor C5 and one end of capacitor C6 form a common junction because conllinear, which is
It is also the power output end of anti-interference process circuit for the power input of anti-interference process circuit；The cathode of electrolytic capacitor C5
A common junction is formed because conllinear with the other end of capacitor C6, which is the ground connection of anti-interference process circuit
End；
First power output circuit includes the power supply chip U1, diode D3, inductance L1, capacitor of model MP2456
C4, capacitor C7, capacitor C8, capacitor C10, resistance R6, resistance R7 and resistance R8 composition；Power supply chip U1 has 1 to No. 6 pin；
No. 5 pins of one end of capacitor C4, one end of resistance R6 and power supply chip U1 form a common junction because conllinear,
The common junction is the power input of the first power output circuit；No. 4 of another termination power supply chip U1 of resistance R6 are drawn
Foot；No. 1 pin of power supply chip U1 connects with one end of capacitor C7；The other end of capacitor C7, power supply chip U1 No. 6 pins,
The cathode of diode D3 and one end of inductance L1 are conllinear；No. 3 pins of power supply chip U1, one end of capacitor C10, resistance R7
One end and one end of resistance R8 are conllinear；The other end of inductance L1, one end of capacitor C8, capacitor C10 the other end and resistance
The other end of R8 forms a common junction because conllinear, which is the power supply output of the first power output circuit
End；The anode of diode D3, the other end of capacitor C8, the other end of resistance R7, capacitor C4 the other end and power supply chip U1
No. 2 pins form a common junction due to conllinear, which is the ground terminal of the first power output circuit；
The second source output circuit includes the power supply chip U2, diode D4, inductance L2, capacitor of model MP2456
C1, capacitor C2, capacitor C11, capacitor C12, resistance R9, resistance R10 and resistance R11 composition；Power supply chip U2 has 1 to No. 6 and draws
Foot；
No. 5 pins of one end of capacitor C1, one end of resistance R9 and power supply chip U2 form a common junction because conllinear,
The common junction is the power input of second source output circuit；No. 4 of another termination power supply chip U2 of resistance R9 are drawn
Foot；No. 1 pin of power supply chip U2 connects with one end of capacitor C2；The other end of capacitor C2, power supply chip U2 No. 6 pins,
The cathode of diode D4 and one end of inductance L2 are conllinear；No. 3 pins, one end of capacitor C12, the resistance R10 of power supply chip U2
One end and resistance R11 one end it is conllinear；The other end of inductance L2, one end of capacitor C11, capacitor C12 the other end and
The other end of resistance R11 forms a common junction because conllinear, which is the power supply of second source output circuit
Output end；The anode of diode D4, the other end of capacitor C11, the other end of resistance R10, capacitor C1 the other end and power supply
No. 2 pins of chip U1 form a common junction because conllinear, which is the ground connection of second source output circuit
End.
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| CN102821503A (en) * | 2011-06-09 | 2012-12-12 | 奥斯兰姆施尔凡尼亚公司 | Multiple channel light source power supply with output protection |
| CN104955195A (en) * | 2014-03-25 | 2015-09-30 | 深圳市海洋王照明工程有限公司 | Wireless control lamp circuit |
| CN104270000A (en) * | 2014-09-10 | 2015-01-07 | 深圳市易联技术有限公司 | Thermal printer power supply soft start system for POS machine |
| CN104362846A (en) * | 2014-10-17 | 2015-02-18 | 深圳航天科技创新研究院 | Multi-output direct current-direct current converter with power-on timing sequence controllable |
| CN205540551U (en) * | 2016-02-02 | 2016-08-31 | 王骏 | Computer power soft start management circuit |
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