CN215498909U - Transistor output driving circuit - Google Patents
Transistor output driving circuit Download PDFInfo
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- CN215498909U CN215498909U CN202121470530.4U CN202121470530U CN215498909U CN 215498909 U CN215498909 U CN 215498909U CN 202121470530 U CN202121470530 U CN 202121470530U CN 215498909 U CN215498909 U CN 215498909U
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Abstract
The utility model discloses a transistor output drive circuit, which relates to the field of drive circuits, and comprises: the voltage supply module is used for supplying 220V alternating current; the voltage conversion module is used for converting the 220V alternating current into proper direct current; the switch protection module is used for circuit conduction and high-voltage and overcurrent protection; the driving module is used for driving the load to work; the limiting protection module is used for limiting the current of the driving module to be constant and simultaneously preventing the driving module from being damaged; the load working module is used for working production; compared with the prior art, the utility model has the beneficial effects that: this scheme possess overvoltage protection, overcurrent protection, high temperature appears, effectual protection circuit when overflowing prevents to lead to components and parts to damage because high temperature overflows, and the electric current of drive module is controlled invariable in the electric current of restriction drive module's electric current size simultaneously, guarantees that load operating condition is stable.
Description
Technical Field
The utility model relates to the field of driving circuits, in particular to a transistor output driving circuit.
Background
The basic task of the driving circuit is to convert the signal transmitted from the information electronic circuit into a signal which is added between the control end and the common end of the power electronic device and can be switched on or off according to the requirement of the control target of the information electronic circuit. The semi-control device only needs to provide an on control signal, and the full-control device only needs to provide the on control signal and the off control signal so as to ensure that the device is reliably turned on or off as required.
The protection measures of the existing drive circuit are often insufficient, and when the drive of large current occurs, the drive circuit is often damaged, so that the damage of components and parts is caused, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a transistor output driving circuit to solve the above problems.
In order to achieve the purpose, the utility model provides the following technical scheme:
a transistor output driver circuit comprising:
the voltage supply module is used for supplying 220V alternating current;
the voltage conversion module is used for converting the 220V alternating current into proper direct current;
the switch protection module is used for circuit conduction and high-voltage and overcurrent protection;
the driving module is used for driving the load to work;
the limiting protection module is used for limiting the current of the driving module to be constant and simultaneously preventing the driving module from being damaged;
the load working module is used for working production;
the voltage supply module is connected with the voltage conversion module, the voltage conversion module is connected with the switch protection module, the switch protection module is connected with the limit protection module, the driving module and the load working module, and the driving module is connected with the limit protection module and the load working module.
As a still further scheme of the utility model: the voltage conversion module comprises a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a capacitor C2, a resistor R1 and a resistor R2, wherein the input end of the transformer W is connected with the voltage supply module, one end of the output end of the transformer W is connected with the anode of the diode D1 and the cathode of the diode D3, the other end of the output end of the transformer W is connected with the anode of the diode D2 and the cathode of the diode D4, the cathode of the diode D1 is connected with the cathode of the diode D2, the capacitor C1, the resistor R1, the capacitor C2, the resistor R2 and the switch protection module, and the anode of the diode D3 is connected with the anode of the diode D4, the other end of the capacitor C1, the other end of the resistor R1, the other end of the capacitor C2 and the other end of the resistor R2.
As a still further scheme of the utility model: the switch protection module comprises a switch S1, a transient suppression diode D5, a fuse FU1, a potentiometer RP1 and a resistor R3, one end of the switch S1 is connected with the negative electrode of the diode D2, the other end of the switch S1 is connected with the negative electrode of the transient suppression diode D5, the fuse FU1 is connected with the positive electrode of the transient suppression diode D5 to be grounded, the other end of the fuse FU1 is connected with the potentiometer RP1 and the load working module, and the other end of the potentiometer RP1 is connected with the resistor R3.
As a still further scheme of the utility model: the driving module comprises a resistor R4, a resistor R5, a triode V4, a triode V5 and a resistor R7, one end of the resistor R4 is connected with the other ends of the resistor R5 and the resistor R3, the other end of the resistor R4 is connected with the base electrode of the triode V4, the other end of the resistor R5 is connected with the base electrode of the triode V5, the emitter electrode of the triode V4 is connected with the collector electrode of the triode V5, and the emitter electrode of the triode V5 is connected with the resistor R7.
As a still further scheme of the utility model: the limiting protection module comprises a triode V1, a triode V2, a triode V3, a capacitor C3 and a resistor R6, wherein the base electrode of the triode V2 is connected with the collector electrode of the triode V2, the other end of the resistor R3, the capacitor C3 and the collector electrode of the triode V1, the emitter electrode of the triode V2 is connected with the base electrode of the triode V3, the collector electrode of the triode V3 is connected with the base electrode of the triode V5, the emitter electrode of the triode V3 is connected with the emitter electrode of the triode V5 and the resistor R6, the other end of the resistor R6 is connected with the base electrode of the triode V1, and the emitter electrode of the triode V1 is grounded.
Compared with the prior art, the utility model has the beneficial effects that: this scheme possess overvoltage protection, overcurrent protection, high temperature appears, effectual protection circuit when overflowing prevents to lead to components and parts to damage because high temperature overflows, and the electric current of drive module is controlled invariable in the electric current of restriction drive module's electric current size simultaneously, guarantees that load operating condition is stable.
Drawings
Fig. 1 is a schematic diagram of a transistor output driver circuit.
Fig. 2 is a circuit diagram of a transistor output driving circuit.
Fig. 3 is a schematic diagram of an NPN transistor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, a transistor output driving circuit includes:
the voltage supply module is used for supplying 220V alternating current;
the voltage conversion module is used for converting the 220V alternating current into proper direct current;
the switch protection module is used for circuit conduction and high-voltage and overcurrent protection;
the driving module is used for driving the load to work;
the limiting protection module is used for limiting the current of the driving module to be constant and simultaneously preventing the driving module from being damaged;
the load working module is used for working production;
the voltage supply module is connected with the voltage conversion module, the voltage conversion module is connected with the switch protection module, the switch protection module is connected with the limit protection module, the driving module and the load working module, and the driving module is connected with the limit protection module and the load working module.
In this embodiment: referring to fig. 2, the voltage conversion module includes a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a capacitor C2, a resistor R1, and a resistor R2, an input end of the transformer W is connected to the voltage supply module, one end of an output end of the transformer W is connected to an anode of the diode D1 and a cathode of the diode D3, the other end of the output end of the transformer W is connected to an anode of the diode D2 and a cathode of the diode D4, a cathode of the diode D1 is connected to a cathode of the diode D2, the capacitor C1, the resistor R1, the capacitor C2, the resistor R2, and the switch protection module, and an anode of the diode D3 is connected to an anode of the diode D4, the other end of the capacitor C1, the other end of the resistor R1, the other end of the capacitor C2, and the other end of the resistor R2.
The transformer W converts 220V alternating current into low-voltage alternating current, the low-voltage alternating current is converted into direct current through a bridge rectifier circuit consisting of a diode D1, a diode D2, a diode D3 and a diode D4, and the direct current is converted into stable direct current through a filter circuit consisting of a capacitor C1, a capacitor C2, a resistor R1 and a resistor R2.
In this embodiment: referring to fig. 2, the switch protection module includes a switch S1, a transient suppression diode D5, a fuse FU1, a potentiometer RP1, and a resistor R3, one end of the switch S1 is connected to a negative electrode of the diode D2, the other end of the switch S1 is connected to a negative electrode of the transient suppression diode D5, the fuse FU1, an anode of the transient suppression diode D5 is grounded, the other end of the fuse FU1 is connected to the potentiometer RP1 and the load operation module, and the other end of the potentiometer RP1 is connected to the resistor R3.
Switch S1 is a circuit conduction control switch; the transient suppression diode D5 is not conducted at low voltage and conducted at high voltage, so that the transient suppression diode D5 is conducted to the ground when the voltage in the circuit is over-voltage, and the circuit is protected; fuse FU1 rises in temperature when the current is too large, opening the protection circuit.
In this embodiment: referring to fig. 2, the driving module includes a resistor R4, a resistor R5, a transistor V4, a transistor V5, and a resistor R7, one end of the resistor R4 is connected to the other ends of the resistor R5 and the resistor R3, the other end of the resistor R4 is connected to the base of the transistor V4, the other end of the resistor R5 is connected to the base of the transistor V5, the emitter of the transistor V4 is connected to the collector of the transistor V5, and the emitter of the transistor V5 is connected to the resistor R7.
Referring to fig. 3, the NPN transistor is a transistor formed by sandwiching a P-type semiconductor between two N-type semiconductors; also called as transistor, its main functions are current amplification and switching action, which can change weak electric signal into signal with certain intensity.
The triode V4 and the triode V5 are used for driving the load X to work after being conducted, when a collector and an emitter of one of the triode V4 and the triode V5 are short-circuited, because the emitter output circuit is limited by base voltage when the triode is conducted, the overcurrent cannot occur in the circuit due to the existence of the other triode.
In this embodiment: referring to fig. 2, the limit protection module includes a transistor V1, a transistor V2, a transistor V3, a capacitor C3, and a resistor R6, a base of the transistor V2 is connected to a collector of the transistor V2, another end of the resistor R3, a capacitor C3, and a collector of the transistor V1, an emitter of the transistor V2 is connected to a base of the transistor V3, a collector of the transistor V3 is connected to a base of the transistor V5, an emitter of the transistor V3 is connected to an emitter of the transistor V5 and a resistor R6, another end of the resistor R6 is connected to a base of the transistor V1, and an emitter of the transistor V1 is grounded.
The current output by the emitter of the triode V5 can pass through the resistor R6 to conduct the triode V1, the triode V1 is conducted to reduce the base voltage of the triode V4 and the base voltage of the triode V5, the triode V4 and the base conduction degree of the triode V5 can change the conduction degree of the triode V1, so that the current flowing through the triode V4 and the triode V5 can be stabilized, the current of the load X is further constant, the triode V2 and the triode V3 are used for shunting when the bases of the triode V4 and the triode V5 are completely conducted, and the triode V4 and the triode V5 are prevented from being damaged by overcurrent.
The working principle of the utility model is as follows: the voltage supplied by the voltage supply module is output as stable direct current through the voltage conversion module, the direct current is supplied to the driving module through the switch protection module, the driving module drives the load working module to work, the limiting protection module is used for limiting the current of the driving module, so that the current constancy of the load working module is further ensured, the working state of a load is ensured, and meanwhile, the switch protection module has overvoltage and overcurrent protection, so that the circuit is prevented from being damaged due to overvoltage and overcurrent.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A transistor output driver circuit, comprising:
the transistor output driving circuit includes:
the voltage supply module is used for supplying 220V alternating current;
the voltage conversion module is used for converting the 220V alternating current into proper direct current;
the switch protection module is used for circuit conduction and high-voltage and overcurrent protection;
the driving module is used for driving the load to work;
the limiting protection module is used for limiting the current of the driving module to be constant and simultaneously preventing the driving module from being damaged;
the load working module is used for working production;
the voltage supply module is connected with the voltage conversion module, the voltage conversion module is connected with the switch protection module, the switch protection module is connected with the limit protection module, the driving module and the load working module, and the driving module is connected with the limit protection module and the load working module.
2. The transistor output driving circuit according to claim 1, wherein the voltage converting module comprises a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a capacitor C2, a resistor R1, and a resistor R2, an input terminal of the transformer W is connected to the voltage supplying module, one end of an output terminal of the transformer W is connected to an anode of a diode D1 and a cathode of a diode D3, the other end of the output terminal of the transformer W is connected to an anode of a diode D2 and a cathode of a diode D4, a cathode of a diode D1 is connected to a cathode of a diode D2, a capacitor C1, a resistor R1, a capacitor C2, a resistor R2, and the switch protection module, an anode of a diode D3 is connected to an anode of a diode D4, the other end of a capacitor C1, the other end of a resistor R1, the other end of a capacitor C2, and the other end of a resistor R2.
3. The transistor output driving circuit according to claim 1, wherein the switch protection module comprises a switch S1, a transient suppression diode D5, a fuse FU1, a potentiometer RP1 and a resistor R3, one end of the switch S1 is connected to the negative electrode of the diode D2, the other end of the switch S1 is connected to the negative electrode of the transient suppression diode D5, the fuse FU1, the positive electrode of the transient suppression diode D5 is grounded, the other end of the fuse FU1 is connected to the potentiometer RP1 and the load operation module, and the other end of the potentiometer RP1 is connected to the resistor R3.
4. The transistor output driving circuit according to claim 1, wherein the driving module comprises a resistor R4, a resistor R5, a transistor V4, a transistor V5, and a resistor R7, one end of the resistor R4 is connected to the other ends of the resistors R5 and R3, the other end of the resistor R4 is connected to a base of a transistor V4, the other end of the resistor R5 is connected to a base of a transistor V5, an emitter of the transistor V4 is connected to a collector of a transistor V5, and an emitter of the transistor V5 is connected to a resistor R7.
5. The transistor output driving circuit according to claim 4, wherein the limit protection module comprises a transistor V1, a transistor V2, a transistor V3, a capacitor C3 and a resistor R6, wherein a base of the transistor V2 is connected to a collector of the transistor V2, the other end of the resistor R3, the capacitor C3 and a collector of the transistor V1, an emitter of the transistor V2 is connected to a base of the transistor V3, a collector of the transistor V3 is connected to a base of the transistor V5, an emitter of the transistor V3 is connected to an emitter of the transistor V5 and a resistor R6, the other end of the resistor R6 is connected to a base of the transistor V1, and an emitter of the transistor V1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470530.4U CN215498909U (en) | 2021-06-30 | 2021-06-30 | Transistor output driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470530.4U CN215498909U (en) | 2021-06-30 | 2021-06-30 | Transistor output driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215498909U true CN215498909U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121470530.4U Active CN215498909U (en) | 2021-06-30 | 2021-06-30 | Transistor output driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215498909U (en) |
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2021
- 2021-06-30 CN CN202121470530.4U patent/CN215498909U/en active Active
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