CN204597772U - Airborne DC power supply anti-surge circuit - Google Patents
Airborne DC power supply anti-surge circuit Download PDFInfo
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- CN204597772U CN204597772U CN201520335867.2U CN201520335867U CN204597772U CN 204597772 U CN204597772 U CN 204597772U CN 201520335867 U CN201520335867 U CN 201520335867U CN 204597772 U CN204597772 U CN 204597772U
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Abstract
The utility model relates to technical field of direct current power, disclose a kind of airborne DC power supply anti-surge circuit, by triangular wave oscillator, square-wave generator, surge clamp circuit, voltage doubling rectifing circuit and feedback comparison circuit composition, power to after supply network voltage carries out linear voltage stabilization governor circuit PWM, triangular wave is produced by triangular wave oscillator, square wave is produced by square-wave generator after the triangular wave produced and linear voltage stabilization value compare, this square wave drives the second field effect transistor of surge clamp circuit by voltage doubling rectifing circuit, realize the clamp of surge voltage, drive surge clamp MOSFET by voltage doubling rectifing circuit, then will export sampling feedback to MOSFET by feedback comparison circuit, and realize the surge clamp of supply network.Utilize the triangular wave oscillation of master control PWM, produce square wave, decrease the quantity of components and parts.Adopt thick film hybrid integrated circuit manufacture technics, volume is little, and reliability is high, and operating temperature range is wide, and product can be operated in rugged environment.
Description
Technical field
The utility model relates to technical field of direct current power, a kind of by carrying out antisurge process to power pack specifically, protects the airborne DC power supply anti-surge circuit of reliable, the trouble free service of airborne DC power supply.
Background technology
Military aircraft platform is made up of flight control system, navigation system, observing and controlling and the information transmission system, power-supply system and mission payload etc., platform carries a large amount of air environments, all need the power supply supply that airborne power supply system provides reliable and stable, therefore the stability of airborne power-supply system directly affects airborne equipment operating state and flight safety.Air environment generally adopts integrated circuit as core devices in design, and this kind equipment (system) is for the protective capacities of forceful electric power, want much weak compared with the electronic equipment be made up of separating component, the power surge caused by factors such as thunders and lightnings threatens this kind equipment and also becomes increasingly conspicuous.
The antisurge of airborne DC power supply will be realized in the prior art scheme, can only be increase surge suppressor in power supply prime or suppress the equipment of surge, the volume so both adding complete machine also makes machine system loaded down with trivial details heavy, and work is absolutely unsafe, reliably.And along with the development of electronic device, the volume, working temperature, reliability etc. of circuit module are had higher requirement, under harsh environment for use, traditional PCB printed circuit cannot meet instructions for use, this just needs circuit to adopt hybrid integrated circuit explained hereafter, to solve the problem.
Utility model content
The purpose of this utility model is to provide a kind of airborne DC power supply anti-surge circuit, to improve the safety and reliability of airborne DC power-supply system work.
Unresolved above-mentioned technical problem, technical solution adopted in the utility model is:
A kind of airborne DC power supply anti-surge circuit, this circuit is made up of triangular wave oscillator, square-wave generator, surge clamp circuit, voltage doubling rectifing circuit and feedback comparison circuit, described square-wave generator connects the triangular wave oscillator of governor circuit PWM, the output of described voltage doubling rectifing circuit connection side wave producer, described surge clamp circuit connects input and the output of supply network, and described feedback comparison circuit connects output and the surge clamp circuit of supply network; Power to after supply network voltage carries out linear voltage stabilization governor circuit PWM, triangular wave is produced by triangular wave oscillator, square wave is produced by square-wave generator after the triangular wave produced and linear voltage stabilization value compare, this square wave drives the second field effect transistor of surge clamp circuit by voltage doubling rectifing circuit, realizes the clamp of surge voltage; When supply network voltage is normal, in feedback comparison circuit, the partial pressure value of resistance is lower than threshold value, the 3rd triode cut-off, and in surge clamp circuit, the grid of the second field effect transistor is high potential, second field effect transistor conducting, supply network normally exports power supply by the second field effect transistor; When there is overvoltage surge voltage in supply network; in feedback comparison circuit, the partial pressure value of resistance is higher than threshold value; 3rd triode ON; the grid voltage of the second field effect transistor is drawn into electronegative potential; second field effect transistor cut-off; the overvoltage surge of supply network is all carried in the second field effect transistor, and the trouble free service of protection rear class power supply circuits, realizes the surge clamp of supply network.
As further improvement of the utility model, described triangular wave oscillating circuit device comprises the first resistance, second resistance, 3rd resistance, first circuit, first field effect transistor, first electric capacity, second electric capacity, 3rd electric capacity, first voltage-stabiliser tube, first diode, second diode, the drain electrode of the first field effect transistor connects the input of supply network, connect one end of the first resistance simultaneously, the grid of the first field effect transistor connects the other end of the first resistance, connect the first voltage-stabiliser tube negative electrode simultaneously, the anode of the first voltage-stabiliser tube connects the GND end of supply network, the source electrode of the first field effect transistor connects 7 pin of the first circuit, 8 pin of the first circuit connect one end of the second resistance, connect one end of the second electric capacity simultaneously, the other end of the second electric capacity connects the GND end of supply network, 4 pin of the first circuit connect the other end of the second resistance, connect one end of the first electric capacity simultaneously, the other end of the first electric capacity connects the GND end of supply network, 5 pin of the first circuit connect the GND end of supply network, 3 pin of the first circuit connect one end of the 3rd resistance, the other end of the 3rd resistance connects 8 pin of the first circuit, 3 pin of the first circuit connect one end of the 3rd electric capacity, the other end of the 3rd electric capacity connects the GND end of supply network, 3 pin of the first circuit connect the first diode anode, the negative electrode of the first diode connects the second diode anode, the negative electrode of the second diode connects the GND end of supply network, described triangular wave oscillator produces triangular wave.
Further improve as of the present utility model, described square-wave generator comprises the first triode, second triode, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 4th electric capacity, the collector electrode of the first triode connects 7 pin of the first circuit, base stage connects 4 pin of the first circuit, emitter connects one end of the 4th resistance, connect one end of the 4th electric capacity simultaneously, the other end of the 4th resistance connects the collector electrode of the second triode, the other end of the 4th electric capacity connects the base stage of the second triode, the base stage of the second triode and the 5th resistance, the common port of the 6th resistance is connected, the 5th resistance other end is connected to the collector electrode of the first triode, the other end of the 6th resistance is connected to the emitter of the second triode, one end of 7th resistance connects the collector electrode of the first triode, the other end connects the collector electrode of the second triode, the major function of described square-wave generator is that triangular wave compares generation square wave with linear voltage stabilization value.
Further improve as of the present utility model, described surge clamp circuit comprises the 7th electric capacity, the 8th electric capacity, the second field effect transistor, one end of 7th electric capacity connects the input of supply network, the other end connects the GND end of supply network, one end of 8th electric capacity connects the output of supply network, the other end connects the GND end of supply network, and the second field effect transistor drain electrode connects the input of supply network, and source electrode connects supply network output; The function of described surge clamp circuit is the break-make by controlling the second field effect transistor, clamp surge voltage.
Described voltage doubling rectifing circuit comprises the 8th resistance, the 5th electric capacity, the 6th electric capacity, the 3rd diode, the 4th diode, the 5th diode, the second voltage-stabiliser tube, and one end of the 5th electric capacity connects the collector electrode of the second triode; The other end connects the negative electrode of the 3rd diode, connect the anode of the 4th diode simultaneously, the negative electrode of the 3rd diode connects the output of supply network, one end of 8th resistance connects the grid of the second field effect transistor, the other end connects the negative electrode of the 4th diode, connect one end of the 6th electric capacity simultaneously, the other end of the 6th electric capacity connects the anode of the 3rd diode, the anode of the 5th diode connects the grid of the second field effect transistor, negative electrode connects the negative electrode of the second voltage-stabiliser tube, and the anode of the second voltage-stabiliser tube connects the anode of the 3rd diode; The function of described voltage doubling rectifing circuit is the grid voltage being promoted surge clamp second field effect transistor by voltage doubling rectifing circuit multiplication of voltage, makes the conducting of surge clamp second field effect transistor.
Further improve as of the present utility model, described feedback comparison circuit comprises the 9th resistance, tenth resistance, 11 resistance, 3rd triode, 4th triode, the base stage of the 3rd triode is connected to the common port of the 9th resistance and the tenth resistance, the other end of the 9th resistance connects the output of supply network, the other end of the tenth resistance connects the GND end of supply network, the collector electrode of the 3rd triode connects the grid of the second field effect transistor, emitter connects one end of the 11 resistance, the other end of the 11 resistance connects the GND end of supply network, the base stage of the 4th triode connects 8 pin of the first circuit, collector electrode connects 7 pin of the first circuit, emitter connects the emitter of the 3rd triode, the function of described feedback comparison circuit is the dividing potential drop by the 9th resistance and the tenth resistance, compares with the reference voltage of PWM, controls conducting and the shutoff of surge clamp second field effect transistor.
The utility model adopts MOSFET(second field effect transistor) characteristic surge voltage is carried out clamp, surge clamp MOSFET(second field effect transistor is driven) by voltage doubling rectifing circuit, then sampling feedback will be exported to MOSFET(second field effect transistor by feedback comparison circuit), realize the surge clamp of supply network.Utilize the triangular wave oscillation of master control PWM, produce square wave, decrease the quantity of components and parts.Adopt thick film hybrid integrated circuit manufacture technics, volume is little, and reliability is high, and operating temperature range wide (-55 DEG C ~ 125 DEG C), product can be operated in rugged environment.
The beneficial effects of the utility model:
(1) the utility model is by optimizing circuit, selecting suitable line topological, carries out antisurge process to power pack, reliable, the trouble free service of protection airborne DC power supply;
(2) the utility model adopts thick film hybrid integrated circuit manufacture technics to produce, and adopts bare chip assembling, the full level Hermetic Package of metal dual-in-line, has that volume is little, operating temperature range is wide, high reliability.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of airborne DC power supply anti-surge circuit as shown in Figure 1 and Figure 2, this circuit is made up of triangular wave oscillator 1, square-wave generator 2, surge clamp circuit 4, voltage doubling rectifing circuit 3 and feedback comparison circuit 5, square-wave generator 2 connects the triangular wave oscillator 1 of governor circuit PWM, the output of voltage doubling rectifing circuit 3 connection side wave producer 2, surge clamp circuit 4 connects input and the output of supply network, and feedback comparison circuit 5 connects output and the surge clamp circuit 4 of supply network; Power to after supply network voltage carries out linear voltage stabilization governor circuit PWM, triangular wave is produced by triangular wave oscillator 3, square wave is produced by square-wave generator 2 after the triangular wave produced and linear voltage stabilization value compare, this square wave drives the second field effect transistor Q2 of surge clamp circuit 4 by voltage doubling rectifing circuit 3, realizes the clamp of surge voltage; When supply network voltage is normal, in feedback comparison circuit 5, the partial pressure value of resistance is lower than threshold value, and the 3rd triode T3 ends, and in surge clamp circuit 4, the grid of the second field effect transistor Q2 is high potential, second field effect transistor Q2 conducting, supply network normally exports power supply by the second field effect transistor Q2; When there is overvoltage surge voltage in supply network; in feedback comparison circuit 5, the partial pressure value of resistance is higher than threshold value; 3rd triode T3 conducting; the grid voltage of the second field effect transistor Q2 is drawn into electronegative potential; second field effect transistor Q2 cut-off; the overvoltage surge of supply network is all carried on the second field effect transistor Q2, and the trouble free service of protection rear class power supply circuits, realizes the surge clamp of supply network.
Triangular wave oscillating circuit device 1 comprises the first resistance R1, second resistance R2, 3rd resistance R3, first circuit N1, first field effect transistor Q1, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, first voltage-stabiliser tube DZ1, first diode D1, second diode D2, the drain electrode of the first field effect transistor Q1 connects the input of supply network, connect one end of the first resistance R1 simultaneously, the grid of the first field effect transistor Q1 connects the other end of the first resistance R1, connect the first voltage-stabiliser tube DZ1 negative electrode simultaneously, the anode of the first voltage-stabiliser tube DZ1 connects the GND end of supply network, the source electrode of the first field effect transistor Q1 connects 7 pin of the first circuit N1, 8 pin of the first circuit N1 connect one end of the second resistance R2, connect one end of the second electric capacity C2 simultaneously, the other end of the second electric capacity C2 connects the GND end of supply network, 4 pin of the first circuit N1 connect the other end of the second resistance R2, connect one end of the first electric capacity C1 simultaneously, the other end of the first electric capacity C1 connects the GND end of supply network, 5 pin of the first circuit N1 connect the GND end of supply network, 3 pin of the first circuit N1 connect one end of the 3rd resistance R3, the other end of the 3rd resistance R3 connects 8 pin of the first circuit N1, 3 pin of the first circuit N1 connect one end of the 3rd electric capacity C3, the other end of the 3rd electric capacity C3 connects the GND end of supply network, 3 pin of the first circuit N1 connect the first diode D1 anode, the negative electrode of the first diode D1 connects the second diode D2 anode, the negative electrode of the second diode D2 connects the GND end of supply network, triangular wave oscillator 1 produces triangular wave.
Square-wave generator 2 comprises the first triode T1, second triode T2, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 4th electric capacity C4, the collector electrode of the first triode T1 connects 7 pin of the first circuit N1, base stage connects 4 pin of the first circuit N1, emitter connects one end of the 4th resistance R4, connect one end of the 4th electric capacity C4 simultaneously, the other end of the 4th resistance R4 connects the collector electrode of the second triode T2, the other end of the 4th electric capacity C4 connects the base stage of the second triode T2, the base stage of the second triode T2 and the 5th resistance R5, the common port of the 6th resistance R6 is connected, the 5th resistance R5 other end is connected to the collector electrode of the first triode T1, the other end of the 6th resistance R6 is connected to the emitter of the second triode T2, one end of 7th resistance R7 connects the collector electrode of the first triode T1, the other end connects the collector electrode of the second triode T2, the major function of square-wave generator 2 is that triangular wave compares generation square wave with linear voltage stabilization value.
Surge clamp circuit 4 comprises the 7th electric capacity R7, the 8th electric capacity R8, the second field effect transistor Q2, one end of 7th electric capacity R7 connects the input of supply network, the other end connects the GND end of supply network, one end of 8th electric capacity R8 connects the output of supply network, the other end connects the GND end of supply network, second field effect transistor Q2 drain electrode connects the input of supply network, and source electrode connects supply network output; The function of surge clamp circuit 4 is the break-makes by controlling the second field effect transistor Q2, clamp surge voltage.
Voltage doubling rectifing circuit 3 comprises the 8th resistance R8, the 5th electric capacity C5, the 6th electric capacity C6, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the second voltage-stabiliser tube DZ2, and one end of the 5th electric capacity C5 connects the collector electrode of the second triode T2, the other end connects the negative electrode of the 3rd diode D3, connect the anode of the 4th diode D4 simultaneously, the negative electrode of the 3rd diode D3 connects the output of supply network, one end of 8th resistance R8 connects the grid of the second field effect transistor Q2, the other end connects the negative electrode of the 4th diode D4, connect one end of the 6th electric capacity C6 simultaneously, the other end of the 6th electric capacity C6 connects the anode of the 3rd diode D3, the anode of the 5th diode D5 connects the grid of the second field effect transistor Q2, negative electrode connects the negative electrode of the second voltage-stabiliser tube DZ2, the anode of the second voltage-stabiliser tube DZ2 connects the anode of the 3rd diode D3, the function of voltage doubling rectifing circuit is the grid voltage being promoted surge clamp second field effect transistor Q2 by voltage doubling rectifing circuit multiplication of voltage, makes surge clamp second field effect transistor Q2 conducting.
Feedback comparison circuit 5 comprises the 9th resistance R9, tenth resistance R10, 11 resistance R11, 3rd triode T3, 4th triode T4, the base stage of the 3rd triode T3 is connected to the common port of the 9th resistance R9 and the tenth resistance R10, the other end of the 9th resistance R9 connects the output of supply network, the other end of the tenth resistance R10 connects the GND end of supply network, the collector electrode of the 3rd triode T3 connects the grid of the second field effect transistor Q2, emitter connects one end of the 11 resistance R11, the other end of the 11 resistance R11 connects the GND end of supply network, the base stage of the 4th triode T4 connects 8 pin of the first circuit N1, collector electrode connects 7 pin of the first circuit N1, emitter connects the emitter of the 3rd triode T3, the function of feedback comparison circuit 5 is the dividing potential drops by the 9th resistance R9 and the tenth resistance R10, compares with the reference voltage of PWM, controls conducting and the shutoff of surge clamp second field effect transistor Q2.
The utility model, by optimizing circuit, selecting suitable line topological, carries out antisurge process to power pack, reliable, the trouble free service of protection airborne DC power supply.Adopt thick film hybrid integrated circuit manufacture technics to produce, adopt bare chip assembling, the full level Hermetic Package of metal dual-in-line, have that volume is little, operating temperature range is wide, high reliability.
Claims (6)
1. an airborne DC power supply anti-surge circuit, it is characterized in that: this circuit is by triangular wave oscillator (1), square-wave generator (2), surge clamp circuit (4), voltage doubling rectifing circuit (3) and feedback comparison circuit (5) composition, described square-wave generator (2) connects the triangular wave oscillator (1) of governor circuit PWM, the output of described voltage doubling rectifing circuit (3) connection side's wave producer (2), described surge clamp circuit (4) connects input and the output of supply network, described feedback comparison circuit (5) connects output and the surge clamp circuit (4) of supply network, power to after supply network voltage carries out linear voltage stabilization governor circuit PWM, triangular wave is produced by triangular wave oscillator (3), square wave is produced by square-wave generator (2) after the triangular wave produced and linear voltage stabilization value compare, this square wave drives second field effect transistor (Q2) of surge clamp circuit (4) by voltage doubling rectifing circuit (3), realizes the clamp of surge voltage, when supply network voltage is normal, in feedback comparison circuit (5), the partial pressure value of resistance is lower than threshold value, 3rd triode (T3) cut-off, in surge clamp circuit (4), the grid of the second field effect transistor (Q2) is high potential, second field effect transistor (Q2) conducting, supply network normally exports power supply by the second field effect transistor (Q2), when there is overvoltage surge voltage in supply network, in feedback comparison circuit (5), the partial pressure value of resistance is higher than threshold value, 3rd triode (T3) conducting, the grid voltage of the second field effect transistor (Q2) is drawn as electronegative potential, second field effect transistor (Q2) is ended, the overvoltage surge of supply network is all carried in the second field effect transistor (Q2), and the trouble free service of protection rear class power supply circuits, realizes the surge clamp of supply network.
2. airborne DC power supply anti-surge circuit according to claim 1, it is characterized in that: described triangular wave oscillating circuit device (1) comprises the first resistance (R1), second resistance (R2), 3rd resistance (R3), first circuit (N1), first field effect transistor (Q1), first electric capacity (C1), second electric capacity (C2), 3rd electric capacity (C3), first voltage-stabiliser tube (DZ1), first diode (D1), second diode (D2), the drain electrode of the first field effect transistor (Q1) connects the input of supply network, connect one end of the first resistance (R1) simultaneously, the grid of the first field effect transistor (Q1) connects the other end of the first resistance (R1), connect the first voltage-stabiliser tube (DZ1) negative electrode simultaneously, the anode of the first voltage-stabiliser tube (DZ1) connects the GND end of supply network, the source electrode of the first field effect transistor (Q1) connects 7 pin of the first circuit (N1), 8 pin of the first circuit (N1) connect one end of the second resistance (R2), connect one end of the second electric capacity (C2) simultaneously, the other end of the second electric capacity (C2) connects the GND end of supply network, 4 pin of the first circuit (N1) connect the other end of the second resistance (R2), connect one end of the first electric capacity (C1) simultaneously, the other end of the first electric capacity (C1) connects the GND end of supply network, 5 pin of the first circuit (N1) connect the GND end of supply network, 3 pin of the first circuit (N1) connect one end of the 3rd resistance (R3), the other end of the 3rd resistance (R3) connects 8 pin of the first circuit (N1), 3 pin of the first circuit (N1) connect one end of the 3rd electric capacity (C3), the other end of the 3rd electric capacity (C3) connects the GND end of supply network, 3 pin of the first circuit (N1) connect the first diode (D1) anode, the negative electrode of the first diode (D1) connects the second diode (D2) anode, the negative electrode of the second diode (D2) connects the GND end of supply network, described triangular wave oscillator (1) produces triangular wave.
3. airborne DC power supply anti-surge circuit according to claim 1 and 2, it is characterized in that: described square-wave generator (2) comprises the first triode (T1), second triode (T2), 4th resistance (R4), 5th resistance (R5), 6th resistance (R6), 7th resistance (R7), 4th electric capacity (C4), the collector electrode of the first triode (T1) connects 7 pin of the first circuit (N1), base stage connects 4 pin of the first circuit (N1), emitter connects one end of the 4th resistance (R4), connect one end of the 4th electric capacity (C4) simultaneously, the other end of the 4th resistance (R4) connects the collector electrode of the second triode (T2), the other end of the 4th electric capacity (C4) connects the base stage of the second triode (T2), the base stage of the second triode (T2) and the 5th resistance (R5), the common port of the 6th resistance (R6) is connected, 5th resistance (R5) other end is connected to the collector electrode of the first triode (T1), the other end of the 6th resistance (R6) is connected to the emitter of the second triode (T2), one end of 7th resistance (R7) connects the collector electrode of the first triode (T1), the other end connects the collector electrode of the second triode (T2), the major function of described square-wave generator (2) is that triangular wave compares generation square wave with linear voltage stabilization value.
4. airborne DC power supply anti-surge circuit according to claim 3, it is characterized in that: described surge clamp circuit (4) comprises the 7th electric capacity (R7), the 8th electric capacity (R8), the second field effect transistor (Q2), one end of 7th electric capacity (R7) connects the input of supply network, the other end connects the GND end of supply network, one end of 8th electric capacity (R8) connects the output of supply network, the other end connects the GND end of supply network, second field effect transistor (Q2) drain electrode connects the input of supply network, and source electrode connects supply network output; The function of described surge clamp circuit (4) is the break-make by controlling the second field effect transistor (Q2), clamp surge voltage.
5. airborne DC power supply anti-surge circuit according to claim 4, it is characterized in that: described voltage doubling rectifing circuit (3) comprises the 8th resistance (R8), the 5th electric capacity (C5), the 6th electric capacity (C6), the 3rd diode (D3), the 4th diode (D4), the 5th diode (D5), the second voltage-stabiliser tube (DZ2), one end of the 5th electric capacity (C5) connects the collector electrode of the second triode (T2), the other end connects the negative electrode of the 3rd diode (D3), connect the anode of the 4th diode (D4) simultaneously, the negative electrode of the 3rd diode (D3) connects the output of supply network, one end of 8th resistance (R8) connects the grid of the second field effect transistor (Q2), the other end connects the negative electrode of the 4th diode (D4), connect one end of the 6th electric capacity (C6) simultaneously, the other end of the 6th electric capacity (C6) connects the anode of the 3rd diode (D3), the anode of the 5th diode (D5) connects the grid of the second field effect transistor (Q2), negative electrode connects the negative electrode of the second voltage-stabiliser tube (DZ2), the anode of the second voltage-stabiliser tube (DZ2) connects the anode of the 3rd diode (D3), the function of described voltage doubling rectifing circuit is the grid voltage being promoted surge clamp second field effect transistor (Q2) by voltage doubling rectifing circuit multiplication of voltage, makes surge clamp second field effect transistor (Q2) conducting.
6. airborne DC power supply anti-surge circuit according to claim 4, it is characterized in that: described feedback comparison circuit (5) comprises the 9th resistance (R9), tenth resistance (R10), 11 resistance (R11), 3rd triode (T3), 4th triode (T4), the base stage of the 3rd triode (T3) is connected to the common port of the 9th resistance (R9) and the tenth resistance (R10), the other end of the 9th resistance (R9) connects the output of supply network, the other end of the tenth resistance (R10) connects the GND end of supply network, the collector electrode of the 3rd triode (T3) connects the grid of the second field effect transistor (Q2), emitter connects one end of the 11 resistance (R11), the other end of the 11 resistance (R11) connects the GND end of supply network, the base stage of the 4th triode (T4) connects 8 pin of the first circuit (N1), collector electrode connects 7 pin of the first circuit (N1), emitter connects the emitter of the 3rd triode (T3), the function of described feedback comparison circuit (5) is the dividing potential drop by the 9th resistance (R9) and the tenth resistance (R10), compares with the reference voltage of PWM, controls conducting and the shutoff of surge clamp second field effect transistor (Q2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520335867.2U CN204597772U (en) | 2015-05-22 | 2015-05-22 | Airborne DC power supply anti-surge circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520335867.2U CN204597772U (en) | 2015-05-22 | 2015-05-22 | Airborne DC power supply anti-surge circuit |
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| CN204597772U true CN204597772U (en) | 2015-08-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058836A (en) * | 2016-07-06 | 2016-10-26 | 深圳市振华微电子有限公司 | Large-current surge suppressor |
| CN106410778A (en) * | 2016-12-08 | 2017-02-15 | 深圳市振华微电子有限公司 | Surge suppressor |
| CN112511121A (en) * | 2020-12-12 | 2021-03-16 | 江西洪都航空工业集团有限责任公司 | Airplane power grid differential pressure connection operation circuit |
-
2015
- 2015-05-22 CN CN201520335867.2U patent/CN204597772U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058836A (en) * | 2016-07-06 | 2016-10-26 | 深圳市振华微电子有限公司 | Large-current surge suppressor |
| CN106058836B (en) * | 2016-07-06 | 2018-09-21 | 深圳市振华微电子有限公司 | High current surge suppressor |
| CN106410778A (en) * | 2016-12-08 | 2017-02-15 | 深圳市振华微电子有限公司 | Surge suppressor |
| CN106410778B (en) * | 2016-12-08 | 2018-11-16 | 深圳市振华微电子有限公司 | surge suppressor |
| CN112511121A (en) * | 2020-12-12 | 2021-03-16 | 江西洪都航空工业集团有限责任公司 | Airplane power grid differential pressure connection operation circuit |
| CN112511121B (en) * | 2020-12-12 | 2024-04-02 | 江西洪都航空工业集团有限责任公司 | Airplane power grid differential pressure switching-on operation circuit |
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Granted publication date: 20150826 Termination date: 20200522 |