CN205986811U - Low -pressure control high voltage drive circuit of low drive consumption - Google Patents

Abstract

The utility model discloses a low -pressure control high voltage drive circuit of low drive consumption in drive circuit technical field, including control pin and D5 rectifier bridge, be equipped with the Q2 triode on the control pin, be equipped with Q2 base group in the Q2 triode, the collecting electrode of Q2 base group is equipped with U1 circuit board integrated package, the inner chamber left and right sides of U1 circuit board integrated package is equipped with emitting diode and opto -coupler respectively, the bottom of Q1 triode is equipped with control electrode SCR, be equipped with D4 diode and zener diode on the third pin of D5 rectifier bridge respectively, zener diode's the other end is equipped with the Q3 triode, the utility model discloses consumption and safe importance are fully considered to the fine drive consumption problem of having compromise the product in the design process, this drive circuit reduces than drive circuit's drive consumption in the past by a wide margin to stability is stronger in some switches of some low -power consumption.

Description

A kind of low voltage control high-voltage driving circuit of low driving power consumption

Technical field

This utility model is related to drive circuit technical field, the low voltage control high drive of specially a kind of low driving power consumption Circuit.

Background technology

Now a lot of thyristor switch drive be that a light Europe adds an IGCT and drives, such circuit is in list When fireflood is moved, driving power consumption is big, can produce wild effect：1. work as the switch of two-way or more, light one group of lamp, other group lamps Glimmer phenomenon can be produced；2. work as two-way or more switch, light one group of lamp, other group lamps cannot light phenomenon；3. just working as switch Often work, during closed mode, light fixture glimmer phenomenon it is impossible to go out dead completely；4. when switch normal work, during closed mode, Light fixture occurs flickering state, and it is short that flicker frequency has length to have, but it is dead to go out；5., when switching normal work, lead to Switch phenomenon out of control；6., when switching normal work, when opening switch, light fixture dodges the phenomenon just knocking out；7. touch IC is forced to adopt sleep mode, leads to experience sense overproof, for this reason, it is proposed that a kind of low voltage control high pressure of low driving power consumption drives Galvanic electricity road.

Utility model content

The purpose of this utility model is to provide a kind of low voltage control high-voltage driving circuit of low driving power consumption, on solving State the now a lot of thyristor switch proposing in background technology drive be that a light Europe adds an IGCT and drives, so Circuit when single fireflood is moved driving power consumption big, the problem of above series of wild effect can be produced.

For achieving the above object, this utility model provides following technical scheme：A kind of low voltage control of low driving power consumption is high Pressure drive circuit, including controlling pin and D5 rectifier bridge, described control pin is provided with Q2 audion, sets in described Q2 audion There is a Q2 base stage group, the colelctor electrode of described Q2 base stage group is provided with U1 circuit board integrated package, the emitter stage of described Q2 base stage group is provided with low Level generator, the inner chamber of described U1 circuit board integrated package is respectively arranged on the left side and the right side light emitting diode and optocoupler, described luminous The input of diode is provided with high level generator, the electricity of composition between the outfan of described D5 rectifier bridge and the input of optocoupler R3 resistance and R1 resistance are respectively equipped with road, from a left side between the outfan of the outfan of described optocoupler and D5 rectifier bridge from right to left It is respectively equipped with R2 resistance and Q1 audion to the right side, the bottom of described Q1 audion is provided with control pole SCR, the V+ of described D5 rectifier bridge Between end and V- end, loop is produced by R5 resistance, the 3rd pin of described D5 rectifier bridge is respectively equipped with D4 diode and voltage stabilizing Diode, and D4 diode and Zener diode are located at different circuit branch, the other end of described Zener diode is provided with Q3 Audion, the right side outfan of described Q3 audion is provided with live wire.

Preferably, described Zener diode is ZENER diode.

Preferably, described control pin is the pin on single-chip microcomputer or low-voltage control circuit.

Preferably, described Q2 audion is PNP type triode.

Compared with prior art, the beneficial effects of the utility model are：This utility model makes Q2 tri- pole by low and high level Pipe turns on, and makes the lumination of light emitting diode in U1 circuit board integrated package, so that optocoupler is turned on, the electric current that the rectification of D5 rectifier bridge institute comes Export to the control pole of Q1 audion, make Q1 triode ON, make electric current directly pass through Q1 audion, and produced by R5 resistance Loop, after D5 rectifier bridge produces loop, the AC and AC end of D5 rectifier bridge just has electric current and flows through, and will make the of D5 rectifier bridge How out 3 feet have voltage to flow through with electric current, and the voltage after Zener diode voltage stabilizing is powered to low-pressure end by D4 diode, Voltage Q3 triode ON is made by the control end that Zener diode flows to Q3 audion so that loaded work piece it is ensured that When two-way or more switch, light one group of lamp, other group lamps still can be lighted, when single-chip microcomputer or low-voltage control circuit send out one Low level makes Q2 audion by the optocoupler in U1 circuit board integrated package is not turned on, and electric current cannot drive Q1 audion to make Q1 tri- Pole pipe is ended, and the impedance ratio in the loop of the outfan of D5 rectifier bridge is larger, and the voltage x current of output is not enough to exceed voltage stabilizing two The stable voltage of pole pipe, have no idea drive Q3 triode ON make its load light close it is ensured that when switch normal work, close During closed state, light fixture can go out extremely completely, and touch IC of the present utility model need not adopt sleep mode, and experience sense is strong.

Brief description

Fig. 1 is this utility model structural representation.

In figure：1 controls pin, 2Q2 audion, 3Q2 base stage group, 4 high level generators, 5 low level generators, 6U1 electricity Road plate integrated package, 7 light emitting diodes, 8 optocouplers, 9D5 rectifier bridge, 10Q1 audion, 11 control pole SCR, 12R3 resistance, 13R1 electricity Resistance, 14R2 resistance, 15D4 diode, 16 live wires, 17 Zener diodes, 18Q3 audion, 19R5 resistance.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.

Refer to Fig. 1, this utility model provides a kind of technical scheme：A kind of low voltage control high drive of low driving power consumption Circuit, including controlling pin 1 and D5 rectifier bridge 9, described control pin 1 is provided with Q2 audion 2, sets in described Q2 audion 2 There is Q2 base stage group 3, the colelctor electrode of described Q2 base stage group 3 is provided with U1 circuit board integrated package 6, and the emitter stage of described Q2 base stage group 3 sets There is low level generator 5, the inner chamber of described U1 circuit board integrated package 6 is respectively arranged on the left side and the right side light emitting diode 7 and optocoupler 8, The input of described light emitting diode 7 is provided with high level generator 4, the outfan of described D5 rectifier bridge 9 and the input of optocoupler 8 Between composition circuit on be respectively equipped with R3 resistance 12 and R1 resistance 13 from right to left, the outfan of described optocoupler 8 and D5 rectification From left to right it is respectively equipped with R2 resistance 14 and Q1 audion 10, the bottom of described Q1 audion 10 is provided between the outfan of bridge 9 Control pole SCR11, produces loop by R5 resistance 19 between the V+ end of described D5 rectifier bridge 9 and V- end, described D5 rectifier bridge 9 D4 diode 15 and Zener diode 17 are respectively equipped with the 3rd pin, and D4 diode 15 and Zener diode 17 are located at difference Circuit branch, the other end of described Zener diode 17 is provided with Q3 audion 18, the right side outfan of described Q3 audion 18 It is provided with live wire 16.

Wherein, described Zener diode 17 is ZENER diode, and using PN junction reverse breakdown state, its electric current can be very Interior change on a large scale and phenomenon that voltage is basically unchanged, the diode playing pressure stabilization function made, this diode be a kind of until All there is before critical breakdown reverse voltage very high-resistance semiconductor device, on this critical breakdown point, backward resistance is reduced to The numerical value of one very little, in this low-resistance region electric current increase and voltage then keeps constant, Zener diode is according to breakdown potential Pressure carrys out stepping, because this characteristic, stabilivolt is mainly incorporated as manostat or voltage reference device uses, and Zener diode can To be together in series to use on higher voltage, higher burning voltage, described control pin 1 are achieved with by series connection For the pin on single-chip microcomputer or low-voltage control circuit, described Q2 audion 2 is PNP type triode, and PNP transistor is another species Transistor npn npn, its operation principle is similar with NPN transistor, and it is empty for simply moving and amplify the majority carrier of signal in base Cave rather than electronics, the emitter junction of PNP transistor wants positively biased, and the voltage of base is lower than the voltage of launch site, and colelctor electrode So that majority carrier hole is passed through, the voltage of collecting zone is lower than base, will apply in bipolar Analogous Integrated Electronic Circuits NPN-PNP complementary design and the requirement of some biasing circuit polarity, need to introduce the transistor of positive-negative-positive structure.

Operation principle：This utility model passes through Q2 base stage group 3 makes Q2 tri- with high level generator 4 and low level generator 5 Pole pipe 2 turns on, and Q2 audion 2 conducting makes the light emitting diode 7 in U1 circuit board integrated package 6 light, and so that optocoupler 8 is turned on, optocoupler 8 After conducting, the electric current that 9 rectifications of D5 rectifier bridge come passes through R1 resistance 13, R3 resistance 12, U1 circuit board integrated package 6 and R2 resistance 14 export to the control pole of Q1 audion 10, so that Q1 audion 10 is turned on, and make electric current directly pass through Q1 after Q1 audion 10 conducting Audion 10, and loop is produced by R5 resistance 19, after D5 rectifier bridge 9 produces loop, the AC and AC end of D5 rectifier bridge 9 will Electric current is had to flow through, principle is loop produced by D4 diode 15 one unidirectional current of output is live wire 16, so will make 3rd foot of D5 rectifier bridge 9 has voltage and electric current to flow through, and the voltage after Zener diode 17 voltage stabilizing is given by D4 diode 15 Low-pressure end is powered, and additional voltage makes Q3 audion 18 lead by the control end that Zener diode 17 flows to Q3 audion 18 Logical, so that loaded work piece, when single-chip microcomputer or low-voltage control circuit are sent out a low level and made Q2 audion 2 by U1 circuit board Optocoupler 8 in integrated package 6 is not turned on, and electric current cannot drive Q1 audion 10 so that Q1 audion 10 is ended, the output of D5 rectifier bridge 9 Impedance ratio in the loop at end is larger, and the voltage x current of output is not enough to exceed the stable voltage of Zener diode 17, thus Have no idea to drive Q3 audion 18 conducting to make it load light to close.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with multiple changes in the case of without departing from principle of the present utility model and spirit, repair Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of low voltage control high-voltage driving circuit of low driving power consumption, including controlling pin (1) and D5 rectifier bridge (9), it is special Levy and be：Described control pin (1) is provided with Q2 audion (2), is provided with Q2 base stage group (3) in described Q2 audion (2), described The colelctor electrode of Q2 base stage group (3) is provided with U1 circuit board integrated package (6), and the emitter stage of described Q2 base stage group (3) is provided with low level and sends out Raw device (5), the inner chamber of described U1 circuit board integrated package (6) is respectively arranged on the left side and the right side light emitting diode (7) and optocoupler (8), institute The input stating light emitting diode (7) is provided with high level generator (4), the outfan of described D5 rectifier bridge (9) and optocoupler (8) Be respectively equipped with R3 resistance (12) and R1 resistance (13) from right to left on the circuit of composition between input, described optocoupler (8) defeated Go out and be from left to right respectively equipped with R2 resistance (14) and Q1 audion (10), described Q1 between end and the outfan of D5 rectifier bridge (9) The bottom of audion (10) is provided with control pole SCR (11), passes through R5 resistance between the V+ end of described D5 rectifier bridge (9) and V- end (19) produce loop, the 3rd pin of described D5 rectifier bridge (9) be respectively equipped with D4 diode (15) and Zener diode (17), And D4 diode (15) and Zener diode (17) are located at different circuit branch, the other end of described Zener diode (17) sets There is Q3 audion (18), the right side outfan of described Q3 audion (18) is provided with live wire (16).

2. a kind of low driving power consumption according to claim 1 low voltage control high-voltage driving circuit it is characterised in that：Described Zener diode (17) is ZENER diode.

3. a kind of low driving power consumption according to claim 1 low voltage control high-voltage driving circuit it is characterised in that：Described Control the pin that pin (1) is on single-chip microcomputer or low-voltage control circuit.

4. a kind of low driving power consumption according to claim 1 low voltage control high-voltage driving circuit it is characterised in that：Described Q2 audion (2) is PNP type triode.