CN203367965U - High voltage arc extinction timing control circuit - Google Patents
High voltage arc extinction timing control circuit Download PDFInfo
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- CN203367965U CN203367965U CN 201320340170 CN201320340170U CN203367965U CN 203367965 U CN203367965 U CN 203367965U CN 201320340170 CN201320340170 CN 201320340170 CN 201320340170 U CN201320340170 U CN 201320340170U CN 203367965 U CN203367965 U CN 203367965U
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Abstract
The utility model discloses a high voltage arc extinction timing control circuit including a current detection circuit, a timing arc extinction pulse generating circuit, a fault shutdown circuit, a voltage regulator circuit and an overcurrent protection shutdown circuit. A connecting point A of the current detection circuit is connected with a connecting point B of the timing arc extinction pulse generating circuit. A connecting point E of the timing arc extinction pulse generating circuit is connected with a connection point F of the fault shutdown circuit. The timing arc extinction pulse generating circuit and the voltage regulator circuit are connected through a connecting point C and a connecting point D. The fault shutdown circuit and the overcurrent protection shutdown circuit are connected via a connecting point G and a connecting point H. According to the utility model, with the addition of the fault shutdown circuit, the fault shutdown of user equipment can be quickly determined so as to protect the user equipment; and meanwhile, as the timing arc extinction pulse generating circuit is improved with 20% voltage reduction, arcing is more effectively suppressed.
Description
Technical field
The utility model relates to power supply and manufactures field, particularly a kind of high pressure arc extinguishing sequential control circuit.
Background technology
The high pressure that high voltage source produces is usually used in producing the electromagnetic field that accelerates electron beam in vacuum.The normal use between 3000V ~ 20000V between this electromagnetic field, between the high pressure two-stage, electric current increases meeting generation batch (-type) sparking arcing (can recover fault), causes the power supply overcurrent protection, and electron beam interrupts, then manually starts.And the user in use wishes that arcing is not in the situation of serious short circuit, power supply carries out (step-down) arc extinguishing automatically, carries out uninterrupted stream time.The arc-suppression circuit operation principle, after outer detecting circuit detects over-current signal, send the 10mS(time by pulse generator adjustable) pulse make high voltage source synchronously reduce voltage to reach the effect of arc extinguishing, after overcurrent disappears, pulse disappears, it is normal that supply voltage recovers, and after stream, repeats above action, when the repetition pulse duration arrives 200mS, circuit just is judged as the irreversible fault of load, turn-offs high pressure, could be manually opened after the user fixes a breakdown.Available circuit is only done over current fault and is detected, as long as there is the arcing overcurrent will power cutoff, subscriber equipment directly quits work; Or autoboot after turn-offing, but such mode power supply still turn-offed, and subscriber equipment still interrupted midway, can cause the work of subscriber equipment incoherence, Quality Down owing to constantly restarting and powering up, also can cause physical damage to subscriber equipment and power supply when real fault.
The utility model content
The purpose of this utility model is to address the above problem, and provides a kind of and can effectively suppress arcing, and judge whether fast it is the high pressure arc extinguishing sequential control circuit that the subscriber equipment physical fault is turn-offed.
High pressure arc extinguishing sequential control circuit of the present utility model, comprise current detection circuit, the long arc extinguishing pulse generating circuit of timing, fail close deenergizing, voltage stabilizing circuit and overcurrent protection breaking circuit; The tie point A of current detection circuit is connected with the tie point B of the long arc extinguishing pulse generating circuit of timing, and regularly the tie point E of long arc extinguishing pulse generating circuit is connected with the tie point F of fail close deenergizing; Regularly long arc extinguishing pulse generating circuit is connected with tie point D by tie point C with voltage stabilizing circuit, and the fail close deenergizing is connected with tie point H by tie point G with the overcurrent protection breaking circuit.
Preferably, described current detection circuit comprises the first input voltage V1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the second input voltage V2, the 3rd input voltage V3, the 6th resistance R 6, the first diode D1, the first ground connection GND1, the first triode Q1, the first operational amplifier U1 and current sampling circuit, the first input current V1 connects with the 3rd resistance R 3, the 3rd resistance R 3 is connected with the 4th resistance R 4, and the 3rd resistance R 3 is in parallel with the second resistance R 2, the second resistance R 2 is in parallel with the first resistance R 1, the first resistance R 1 respectively with current sampling circuit and the first operational amplifier U1+the VCC terminals connect, the first operational amplifier U1 connects with the 6th resistance R 6, and the first operational amplifier U1 also is parallel with the second input voltage V2 and the 3rd input voltage V3, the 6th resistance R 6 is connected with the base stage of the first triode Q1, the 4th resistance R 4 is connected with the emitter of the first triode Q1, also be parallel with the 5th resistance R 5 between the 4th resistance R 4 and the first triode Q1, the first ground connection GND1 and the first diode D1, the 5th resistance R 5 and the first operational amplifier U1-the VEE terminals connect, the first diode D1 connects with the 6th resistance R 6, the collector electrode of the first triode Q1 is connected with tie point A.
Preferably, the magnitude of voltage of described the first input voltage V1 and the second input voltage V2 is-15 volts, and the magnitude of voltage of the 3rd input voltage V3 is+15 volts.
Preferably, described the first diode D1 is voltage stabilizing didoe.
Preferably, described the first operational amplifier U1 is the LM393AN chip.
Preferably, the long arc extinguishing pulse generating circuit of described timing comprise the 7th resistance R 7, the first capacitor C 1, the second ground connection GND2,, the 8th resistance R 8, one-shot multivibrator U3, the 9th resistance R 9, the 4th input voltage V4, the 5th input voltage V5, the 6th input voltage V6, the 7th input voltage V7 and the first photoelectrical coupler U4, the 4th input voltage V4 connects with the 8th resistance R 8, tie point B connects with the link A1 of one-shot multivibrator U3, the 8th resistance R 8 is in parallel with the link A1 of one-shot multivibrator U3, the link VCC of one-shot multivibrator U3 connects with the 9th resistance R 9, also be parallel with the 5th input voltage V5 between the linkage section VCC of one-shot multivibrator U3 and the 9th resistance R 9, the 9th resistance R 9 is connected with the light-emitting diode negative pole tie point in the first photoelectrical coupler U4, the 6th input voltage V6 connects with the link B of one-shot multivibrator U3, and in parallel with the link A2 of one-shot multivibrator U3, the 7th input voltage V7 connects with the 7th resistance R 7, the 7th resistance R 7 is connected with the link Rext/Cext of one-shot multivibrator U3, the 7th resistance R 7 is also in parallel with the first capacitor C 1, the first capacitor C 1 is connected with the link Cext of one-shot multivibrator U3, the link Rint sky of one-shot multivibrator U3 connects, the link GND of one-shot multivibrator U3 connects with the second ground connection GND2, the link Q2 of one-shot multivibrator U3 connects with the anodal tie point of the light-emitting diode in the first photoelectrical coupler U4, the link Q1 of one-shot multivibrator U3 connects with tie point E, the collector electrode of the phototriode in the first photoelectrical coupler U4 is connected with tie point C, and the emitter of the phototriode in the first photoelectrical coupler U4 is connected with tie point D.
Preferably, the magnitude of voltage of described the 4th input voltage V4, the 5th input voltage V5, the 6th input voltage V6 and the 7th input voltage V7 is+and 5 volts, described one-shot multivibrator U3 is the SN74121N chip.
Preferably, described fail close deenergizing comprises resistance ten R10, resistance 11 R11, resistance 12 R12, resistance 13 R13, resistance 14 R14, resistance 15 R15, resistance 16 R16, resistance 17 R17, resistance 18 R18, the 8th input voltage V8, the 9th input voltage V9, the second operational amplifier U2, the second capacitor C 2, the 3rd capacitor C 3, the second diode D2, the 3rd diode D3, the second triode Q2 and the second photoelectrical coupler U5; Tie point F connects with resistance ten R10, and resistance ten is in parallel with resistance 11 R11, and resistance 11 R11 are in parallel with resistance 13 R13, and resistance 13 R13 connect with the 9th input voltage V9 and the 12 resistance R 12 respectively; The tenth resistance R 10 and the second operational amplifier U2+the VCC terminals connect, the second operational amplifier U2 connects with the 15 resistance R 15, the second operational amplifier U2 is in parallel with the 16 resistance R 16, the 16 resistance R 16 is connected with the second diode D2, and the second diode D2 connects with the second capacitor C 2; The 15 resistance R 15 is connected with the 3rd diode D3, the 3rd diode D3 connects with the 17 resistance R 17, the 3rd diode D3 is in parallel with the 3rd capacitor C 3, the 17 resistance R 17 is connected with the base stage of the second triode Q2, the collector electrode of the second triode Q2 is connected with the 8th input voltage V8, the emitter of the second triode Q2 is connected with the 18 resistance R 18, and the 18 resistance R 18 is connected with the light-emitting diode negative pole tie point in the second photoelectrical coupler U5; The 12 resistance R 12 is connected with the anodal tie point of the light-emitting diode in the second photoelectrical coupler U5, and the 12 resistance R 12 is in parallel with the 14 resistance R 14, the 14 resistance R 14 and the second operational amplifier U2-the VEE terminals connect, the 12 resistance R 12 is in parallel with the second capacitor C 2, the 12 resistance R 12 is in parallel with the 3rd capacitor C 3, the collector electrode of the phototriode in the second photoelectrical coupler U5 is connected with tie point G, and the emitter of the phototriode in the second photoelectrical coupler U5 is connected with tie point H.
Preferably, the magnitude of voltage of described the 8th input voltage V8 is+15 volts, and the magnitude of voltage of the 9th input voltage V9 is-15 volts.
Preferably, described the second operational amplifier U2 is the LM393AN chip.
In sum, high pressure arc extinguishing sequential control circuit provided by the utility model is the shutoff of subscriber equipment fault owing to having added the fail close deenergizing to judge whether fast, reaches the protective effect to subscriber equipment; Because improving, regularly long arc extinguishing pulse generating circuit makes more effective inhibition arcing by step-down 20% simultaneously.
The accompanying drawing explanation
The circuit diagram that Fig. 1 is high pressure arc extinguishing sequential control circuit.
Wherein, 1, current detection circuit; 2, the long arc extinguishing pulse generating circuit of timing; 3, fail close deenergizing.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
-as shown in Figure 1, high pressure arc extinguishing sequential control circuit of the present utility model, comprise current detection circuit 1, the long arc extinguishing pulse generating circuit 2 of timing, fail close deenergizing 3, voltage stabilizing circuit and overcurrent protection breaking circuit; The tie point A of current detection circuit 1 is connected with the tie point B of the long arc extinguishing pulse generating circuit 2 of timing, and regularly the tie point E of long arc extinguishing pulse generating circuit 2 is connected with the tie point F of fail close deenergizing 3; Regularly long arc extinguishing pulse generating circuit 2 is connected with tie point D by tie point C with voltage stabilizing circuit, and fail close deenergizing 3 is connected with tie point H by tie point G with the overcurrent protection breaking circuit.Described current detection circuit 1 comprises the first input voltage V1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the second input voltage V2, the 3rd input voltage V3, the 6th resistance R 6, the first diode D1, the first ground connection GND1, the first triode Q1, the first operational amplifier U1 and current sampling circuit, the first input current V1 connects with the 3rd resistance R 3, the 3rd resistance R 3 is connected with the 4th resistance R 4, and the 3rd resistance R 3 is in parallel with the second resistance R 2, the second resistance R 2 is in parallel with the first resistance R 1, the first resistance R 1 respectively with current sampling circuit and the first operational amplifier U1+the VCC terminals connect, the first operational amplifier U1 connects with the 6th resistance R 6, and the first operational amplifier U1 also is parallel with the second input voltage V2 and the 3rd input voltage V3, the 6th resistance R 6 is connected with the base stage of the first triode Q1, the 4th resistance R 4 is connected with the emitter of the first triode Q1, also be parallel with the 5th resistance R 5 between the 4th resistance R 4 and the first triode Q1, the first ground connection GND1 and the first diode D1, the 5th resistance R 5 and the first operational amplifier U1-the VEE terminals connect, the first diode D1 connects with the 6th resistance R 6, the collector electrode of the first triode Q1 is connected with tie point A.The magnitude of voltage of described the first input voltage V1 and the second input voltage V2 is-15 volts, and the magnitude of voltage of the 3rd input voltage V3 is+15 volts.Described the first diode D1 is voltage stabilizing didoe.Described the first operational amplifier U1 is the LM393AN chip.The long arc extinguishing pulse generating circuit 2 of described timing comprise the 7th resistance R 7, the first capacitor C 1, the second ground connection GND2,, the 8th resistance R 8, one-shot multivibrator U3, the 9th resistance R 9, the 4th input voltage V4, the 5th input voltage V5, the 6th input voltage V6, the 7th input voltage V7 and the first photoelectrical coupler U4, the 4th input voltage V4 connects with the 8th resistance R 8, tie point B connects with the link A1 of one-shot multivibrator U3, the 8th resistance R 8 is in parallel with the link A1 of one-shot multivibrator U3, the link VCC of one-shot multivibrator U3 connects with the 9th resistance R 9, also be parallel with the 5th input voltage V5 between the linkage section VCC of one-shot multivibrator U3 and the 9th resistance R 9, the 9th resistance R 9 is connected with the light-emitting diode negative pole tie point in the first photoelectrical coupler U4, the 6th input voltage V6 connects with the link B of one-shot multivibrator U3, and in parallel with the link A2 of one-shot multivibrator U3, the 7th input voltage V7 connects with the 7th resistance R 7, the 7th resistance R 7 is connected with the link Rext/Cext of one-shot multivibrator U3, the 7th resistance R 7 is also in parallel with the first capacitor C 1, the first capacitor C 1 is connected with the link Cext of one-shot multivibrator U3, the link Rint sky of one-shot multivibrator U3 connects, the link GND of one-shot multivibrator U3 connects with the second ground connection GND2, the link Q2 of one-shot multivibrator U3 connects with the anodal tie point of the light-emitting diode in the first photoelectrical coupler U4, the link Q1 of one-shot multivibrator U3 connects with tie point E, the collector electrode of the phototriode in the first photoelectrical coupler U4 is connected with tie point C, and the emitter of the phototriode in the first photoelectrical coupler U4 is connected with tie point D.The magnitude of voltage of described the 4th input voltage V4, the 5th input voltage V5, the 6th input voltage V6 and the 7th input voltage V7 is+and 5 volts, described one-shot multivibrator U3 is the SN74121N chip.Described fail close deenergizing 3 comprises resistance ten R10, resistance 11 R11, resistance 12 R12, resistance 13 R13, resistance 14 R14, resistance 15 R15, resistance 16 R16, resistance 17 R17, resistance 18 R18, the 8th input voltage V8, the 9th input voltage V9, the second operational amplifier U2, the second capacitor C 2, the 3rd capacitor C 3, the second diode D2, the 3rd diode D3, the second triode Q2 and the second photoelectrical coupler U5; Tie point F connects with resistance ten R10, and resistance ten is in parallel with resistance 11 R11, and resistance 11 R11 are in parallel with resistance 13 R13, and resistance 13 R13 connect with the 9th input voltage V9 and the 12 resistance R 12 respectively; The tenth resistance R 10 and the second operational amplifier U2+the VCC terminals connect, the second operational amplifier U2 connects with the 15 resistance R 15, the second operational amplifier U2 is in parallel with the 16 resistance R 16, the 16 resistance R 16 is connected with the second diode D2, and the second diode D2 connects with the second capacitor C 2; The 15 resistance R 15 is connected with the 3rd diode D3, the 3rd diode D3 connects with the 17 resistance R 17, the 3rd diode D3 is in parallel with the 3rd capacitor C 3, the 17 resistance R 17 is connected with the base stage of the second triode Q2, the collector electrode of the second triode Q2 is connected with the 8th input voltage V8, the emitter of the second triode Q2 is connected with the 18 resistance R 18, and the 18 resistance R 18 is connected with the light-emitting diode negative pole tie point in the second photoelectrical coupler U5; The 12 resistance R 12 is connected with the anodal tie point of the light-emitting diode in the second photoelectrical coupler U5, and the 12 resistance R 12 is in parallel with the 14 resistance R 14, the 14 resistance R 14 and the second operational amplifier U2-the VEE terminals connect, the 12 resistance R 12 is in parallel with the second capacitor C 2, the 12 resistance R 12 is in parallel with the 3rd capacitor C 3, the collector electrode of the phototriode in the second photoelectrical coupler U5 is connected with tie point G, and the emitter of the phototriode in the second photoelectrical coupler U5 is connected with tie point H.The magnitude of voltage of described the 8th input voltage V8 is+15 volts, and the magnitude of voltage of the 9th input voltage V9 is-15 volts.Described the second operational amplifier U2 is the LM393AN chip.
The current signal fed back by current sampling circuit is through the first resistance R 1, the second resistance R 2, after the 3rd resistance R 3 and the 4th resistance R 4 dividing potential drops to the first operational amplifier U1+the VCC terminals, when the voltage of+VCC terminals higher than the voltage of-VEE terminals is, the level of the end output+12V that the first operational amplifier U1 connects with the 6th resistance R 6, again through the 6th resistance R 6, the 8th resistance R 8, the Transistor-Transistor Logic level of the first triode Q1 and the first be shaped to+5V of diode D1 is input to the link A1 of one-shot multivibrator U3, when one-shot multivibrator U3 detects the rising edge of link A1 input (the first capacitor C 1 and the 7th resistance R 7 decisions for pulsewidth), the low level arteries and veins of the link Q2 of one-shot multivibrator U3 output 10ms is to the anodal tie point of light-emitting diode in the first photoelectrical coupler U4, make it output to voltage stabilizing circuit, in order to reduce the high pressure arc extinguishing.The high level pulse of the tie point Q1 of one-shot multivibrator U3 output simultaneously is through the positive terminal of the tenth resistance R 10 to second operational amplifier U2, the 9th input voltage V9 is through the 11 resistance R 11, the 12 resistance R 12 and the 13 resistance R 13 dividing potential drops, then be input to the negative terminals of the second operational amplifier U2, contrast the voltage of the negative terminals of the voltage of positive terminal of the second operational amplifier U2 and the second operational amplifier U2, the voltage of the positive terminal of the second operational amplifier U2 is during higher than the voltage of the negative terminals of the second operational amplifier U2, end output+the 12V that the second operational amplifier U2 connects with the 15 resistance R 15 fills a little by 15 pairs of the second capacitor C 2 of the 15 resistance R, if pulse persistance, the voltage of the second capacitor C 2 raises, otherwise (reversible fault, only do arc extinguishing, need not close power protection) electric energy of the second capacitor C 2 can discharge by the second diode D2 and the 16 resistance R 16 paths, after the voltage of the second capacitor C 2 passes through the 3rd diode D3 step-down, the 3rd capacitor C 3 is charged, the potential difference at the 3rd capacitor C 3 two ends makes the second triode Q2 conducting while surpassing 2.7V, and make the second photoelectrical coupler U5 conducting, the second photoelectrical coupler U5 output outputs to the overcurrent protection breaking circuit.
Although by reference to the accompanying drawings embodiment of the present utility model is described in detail, should not be construed as the restriction to the protection range of this patent.In the described scope of claims, the various modifications that those skilled in the art can make without creative work and distortion still belong to the protection range of this patent.
Claims (10)
1. a high pressure arc extinguishing sequential control circuit, is characterized in that: comprise current detection circuit (1), timing long arc extinguishing pulse generating circuit (2), fail close deenergizing (3), voltage stabilizing circuit and overcurrent protection breaking circuit; The tie point A of current detection circuit (1) is connected with the tie point B of the long arc extinguishing pulse generating circuit of timing (2), and regularly the tie point E of long arc extinguishing pulse generating circuit (2) is connected with the tie point F of fail close deenergizing (3); Regularly long arc extinguishing pulse generating circuit (2) is connected with tie point D by tie point C with voltage stabilizing circuit, and fail close deenergizing (3) is connected with tie point H by tie point G with the overcurrent protection breaking circuit.
2. high pressure arc extinguishing sequential control circuit according to claim 1, it is characterized in that: described current detection circuit (1) comprises the first input voltage V1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the second input voltage V2, the 3rd input voltage V3, the 6th resistance R 6, the first diode D1, the first ground connection GND1, the first triode Q1, the first operational amplifier U1 and current sampling circuit, the first input current V1 connects with the 3rd resistance R 3, the 3rd resistance R 3 is connected with the 4th resistance R 4, and the 3rd resistance R 3 is in parallel with the second resistance R 2, the second resistance R 2 is in parallel with the first resistance R 1, the first resistance R 1 respectively with current sampling circuit and the first operational amplifier U1+the VCC terminals connect, the first operational amplifier U1 connects with the 6th resistance R 6, and the first operational amplifier U1 also is parallel with the second input voltage V2 and the 3rd input voltage V3, the 6th resistance R 6 is connected with the base stage of the first triode Q1, the 4th resistance R 4 is connected with the emitter of the first triode Q1, also be parallel with the 5th resistance R 5 between the 4th resistance R 4 and the first triode Q1, the first ground connection GND1 and the first diode D1, the 5th resistance R 5 and the first operational amplifier U1-the VEE terminals connect, the first diode D1 connects with the 6th resistance R 6, the collector electrode of the first triode Q1 is connected with tie point A.
3. high pressure arc extinguishing sequential control circuit according to claim 2, it is characterized in that: the magnitude of voltage of described the first input voltage V1 and the second input voltage V2 is-15 volts, and the magnitude of voltage of the 3rd input voltage V3 is+15 volts.
4. high pressure arc extinguishing sequential control circuit according to claim 2, it is characterized in that: described the first diode D1 is voltage stabilizing didoe.
5. high pressure arc extinguishing sequential control circuit according to claim 2, it is characterized in that: described the first operational amplifier U1 is the LM393AN chip.
6. high pressure arc extinguishing sequential control circuit according to claim 1 is characterized in that: the long arc extinguishing pulse generating circuit of described timing (2) comprise the 7th resistance R 7, the first capacitor C 1, the second ground connection GND2,, the 8th resistance R 8, one-shot multivibrator U3, the 9th resistance R 9, the 4th input voltage V4, the 5th input voltage V5, the 6th input voltage V6, the 7th input voltage V7 and the first photoelectrical coupler U4, the 4th input voltage V4 connects with the 8th resistance R 8, tie point B connects with the link A1 of one-shot multivibrator U3, the 8th resistance R 8 is in parallel with the link A1 of one-shot multivibrator U3, the link VCC of one-shot multivibrator U3 connects with the 9th resistance R 9, also be parallel with the 5th input voltage V5 between the linkage section VCC of one-shot multivibrator U3 and the 9th resistance R 9, the 9th resistance R 9 is connected with the light-emitting diode negative pole tie point in the first photoelectrical coupler U4, the 6th input voltage V6 connects with the link B of one-shot multivibrator U3, and in parallel with the link A2 of one-shot multivibrator U3, the 7th input voltage V7 connects with the 7th resistance R 7, the 7th resistance R 7 is connected with the link Rext/Cext of one-shot multivibrator U3, the 7th resistance R 7 is also in parallel with the first capacitor C 1, the first capacitor C 1 is connected with the link Cext of one-shot multivibrator U3, the link Rint sky of one-shot multivibrator U3 connects, the link GND of one-shot multivibrator U3 connects with the second ground connection GND2, the link Q2 of one-shot multivibrator U3 connects with the anodal tie point of the light-emitting diode in the first photoelectrical coupler U4, the link Q1 of one-shot multivibrator U3 connects with tie point E, the collector electrode of the phototriode in the first photoelectrical coupler U4 is connected with tie point C, and the emitter of the phototriode in the first photoelectrical coupler U4 is connected with tie point D.
7. high pressure arc extinguishing sequential control circuit according to claim 6, it is characterized in that: the magnitude of voltage of described the 4th input voltage V4, the 5th input voltage V5, the 6th input voltage V6 and the 7th input voltage V7 is+and 5 volts, described one-shot multivibrator U3 is the SN74121N chip.
8. high pressure arc extinguishing sequential control circuit according to claim 1, it is characterized in that: described fail close deenergizing (3) comprises resistance ten R10, resistance 11 R11, resistance 12 R12, resistance 13 R13, resistance 14 R14, resistance 15 R15, resistance 16 R16, resistance 17 R17, resistance 18 R18, the 8th input voltage V8, the 9th input voltage V9, the second operational amplifier U2, the second capacitor C 2, the 3rd capacitor C 3, the second diode D2, the 3rd diode D3, the second triode Q2 and the second photoelectrical coupler U5; Tie point F connects with resistance ten R10, and resistance ten is in parallel with resistance 11 R11, and resistance 11 R11 are in parallel with resistance 13 R13, and resistance 13 R13 connect with the 9th input voltage V9 and the 12 resistance R 12 respectively; The tenth resistance R 10 and the second operational amplifier U2+the VCC terminals connect, the second operational amplifier U2 connects with the 15 resistance R 15, the second operational amplifier U2 is in parallel with the 16 resistance R 16, the 16 resistance R 16 is connected with the second diode D2, and the second diode D2 connects with the second capacitor C 2; The 15 resistance R 15 is connected with the 3rd diode D3, the 3rd diode D3 connects with the 17 resistance R 17, the 3rd diode D3 is in parallel with the 3rd capacitor C 3, the 17 resistance R 17 is connected with the base stage of the second triode Q2, the collector electrode of the second triode Q2 is connected with the 8th input voltage V8, the emitter of the second triode Q2 is connected with the 18 resistance R 18, and the 18 resistance R 18 is connected with the light-emitting diode negative pole tie point in the second photoelectrical coupler U5; The 12 resistance R 12 is connected with the anodal tie point of the light-emitting diode in the second photoelectrical coupler U5, and the 12 resistance R 12 is in parallel with the 14 resistance R 14, the 14 resistance R 14 and the second operational amplifier U2-the VEE terminals connect, the 12 resistance R 12 is in parallel with the second capacitor C 2, the 12 resistance R 12 is in parallel with the 3rd capacitor C 3, the collector electrode of the phototriode in the second photoelectrical coupler U5 is connected with tie point G, and the emitter of the phototriode in the second photoelectrical coupler U5 is connected with tie point H.
9. high pressure arc extinguishing sequential control circuit according to claim 8, it is characterized in that: the magnitude of voltage of described the 8th input voltage V8 is+15 volts, the magnitude of voltage of the 9th input voltage V9 is-15 volts.
10. high pressure arc extinguishing sequential control circuit according to claim 8, it is characterized in that: described the second operational amplifier U2 is the LM393AN chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320340170 CN203367965U (en) | 2013-06-14 | 2013-06-14 | High voltage arc extinction timing control circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320340170 CN203367965U (en) | 2013-06-14 | 2013-06-14 | High voltage arc extinction timing control circuit |
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| CN203367965U true CN203367965U (en) | 2013-12-25 |
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| CN 201320340170 Expired - Lifetime CN203367965U (en) | 2013-06-14 | 2013-06-14 | High voltage arc extinction timing control circuit |
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- 2013-06-14 CN CN 201320340170 patent/CN203367965U/en not_active Expired - Lifetime
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| CN107591776A (en) * | 2017-09-22 | 2018-01-16 | 深圳市华星光电技术有限公司 | A kind of current foldback circuit of power supply |
| CN107591776B (en) * | 2017-09-22 | 2019-09-20 | 深圳市华星光电技术有限公司 | A kind of current foldback circuit of power supply |
| CN108512512A (en) * | 2018-06-27 | 2018-09-07 | 沈阳工程学院 | The online failure detector of solar energy off-network power generation |
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| CN111618395A (en) * | 2020-05-23 | 2020-09-04 | 上海沪工焊接集团股份有限公司 | Arc quenching control circuit of inverter manual arc welding machine |
| CN111618395B (en) * | 2020-05-23 | 2022-09-27 | 上海沪工焊接集团股份有限公司 | Arc quenching control circuit of inverter manual arc welding machine |
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Owner name: CHENGDU SIWI POWER ELECTRONICS TECHNOLOGY CO., LTD Free format text: FORMER NAME: CHENGDU SIWI AVIATION POWER SUPPLY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 3, No. 1, building 1, building 35, 610091 west slope Su Road, Chengdu, Sichuan Patentee after: CHENGDU SIWI POWER ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 3, No. 1, building 1, building 35, 610091 west slope Su Road, Chengdu, Sichuan Patentee before: CHENGDU SIWI AVIATIC POWER SUPPLY Co.,Ltd. |
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| CX01 | Expiry of patent term |