CN211183395U - Direct current load positive and negative conversion circuit for small voltage control - Google Patents
Direct current load positive and negative conversion circuit for small voltage control Download PDFInfo
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- CN211183395U CN211183395U CN201922455559.4U CN201922455559U CN211183395U CN 211183395 U CN211183395 U CN 211183395U CN 201922455559 U CN201922455559 U CN 201922455559U CN 211183395 U CN211183395 U CN 211183395U
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Abstract
The utility model relates to a motor is just reversing control circuit field, a carry out positive and negative converting circuit of little voltage control direct current load is disclosed, including the left-hand power output circuit, first switch, second switch, the right-hand power output circuit, circuit input interface, the fuse, the left-hand ground control circuit, the right-hand ground control circuit and connecting piece, the left-hand power output circuit is connected with first switch, the right-hand power output circuit is connected with second switch, first switch and second switch all with circuit input interface connection, circuit input interface and fuse are connected, the left-hand ground control circuit is connected with connecting piece and second switch respectively, the right-hand ground control circuit is connected with connecting piece and first switch respectively. Implement the utility model discloses a carry out positive and negative converting circuit of little voltage control direct current load has following beneficial effect: the circuit is reliable, simple, safe, high in sensitivity and high in power.
Description
Technical Field
The utility model relates to a motor is positive reverse control circuit field, in particular to carry out positive reverse conversion circuit of little voltage control direct current load.
Background
The positive and negative rotation of the motor is accompanied with the development of electronic technology, P L C, a single chip microcomputer and the like have further circuit improvement successively, and some proximity switches, photoelectric switches and the like are added in a practical application circuit to realize bidirectional automatic control, thereby laying a foundation for the development of industrial robots.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a circuit is reliable, simple, insurance, sensitivity is high, power is big carries out positive and negative converting circuit of little voltage control direct current load.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a construct and carry out positive and negative converting circuit of little voltage control direct current load, including the power output circuit that turns left, first switch, second switch, the power output circuit that turns right, circuit input interface, fuse, the ground connection control circuit that turns left, the power output circuit that turns right and connecting piece, the power output circuit that turns left with first switch connects, the power output circuit that turns right with second switch connects, first switch and second switch all with circuit input interface connects, circuit input interface with the fuse is connected, the ground connection control circuit that turns left respectively with connecting piece and second switch connect, the ground connection control circuit that turns right respectively with the connecting piece with first switch connects.
Carry out among the positive and negative converting circuit of little voltage control direct current load, first switch is first MOS pipe, second switch is second MOS pipe.
Carry out among the positive and negative converting circuit of little voltage control direct current load, the power output circuit that turns left includes first resistance, second resistance, fifth triode, third resistance and fourth resistance, DC _ MOTOR _ F _ GND _ ON output pin is connected to the one end of first resistance, the other end of first resistance respectively with the one end of second resistance with the base of fifth triode is connected, the other end of second resistance and the projecting pole ground connection of fifth triode, the collecting electrode of fifth triode with the one end of third resistance is connected, the other end of third resistance respectively with the grid of first MOS pipe is connected, the source electrode of first MOS pipe respectively with the other end of fourth resistance with circuit input interface connection.
Carry out among the positive and negative converting circuit of little voltage control direct current load, the power output circuit that turns to the right includes fifth resistance, sixth triode, seventh resistance and eighth resistance, the base of sixth triode respectively with the one end of seventh resistance and the one end of eighth resistance are connected, the projecting pole of sixth triode with the other end of eighth resistance is ground connection all, DC _ MOTOR _ R _ VCC _ C pin is connected to the other end of seventh resistance, the collecting electrode of sixth triode with the one end of sixth resistance is connected, the other end of sixth resistance respectively with the one end of fifth resistance and the gate connection of second MOS pipe, the source electrode of second MOS pipe respectively with the other end of fifth resistance with circuit input interface connection.
Carry out among the positive and negative converting circuit of little voltage control direct current load, the left-hand turn ground connection control circuit includes third MOS pipe and ninth resistance, the grid of third MOS pipe respectively with the one end and the connection of DC _ MOTOR _ F _ GND _ ON output pin of ninth resistance, the other end of ninth resistance with the equal ground connection of grid of third MOS pipe, the drain electrode of third MOS pipe respectively with the drain electrode of second MOS pipe with the first pin of connecting piece is connected.
Carry out among the positive and negative converting circuit of little voltage control direct current load, the right side turns to ground connection control circuit includes tenth resistance and fourth MOS pipe, the grid of fourth MOS pipe respectively with the one end of tenth resistance and DC _ MOTOR _ R _ GND _ ON output pin are connected, the other end of tenth resistance and the equal ground connection of source electrode of fourth MOS pipe, the drain electrode of fourth MOS pipe respectively with the second pin of connecting piece and the drain electrode of first MOS pipe are connected.
Carry out among the positive and negative conversion circuit of little voltage control direct current load, fifth triode and sixth triode are NPN type triode.
Carry out among the positive and negative converting circuit of little voltage control direct current load, first MOS pipe, second MOS pipe, third MOS pipe and fourth MOS pipe are N channel MOS pipe.
Implement the utility model discloses a carry out positive and negative converting circuit of little voltage control direct current load has following beneficial effect: the over-current protection circuit comprises a left-turn power output circuit, a first power switch, a second power switch, a right-turn power output circuit, a circuit input interface, a fuse, a left-turn grounding control circuit, a right-turn grounding control circuit and a connecting piece, can perform over-current protection, is particularly suitable for controlling motors which can rotate forward and backward under various voltages, and has the advantages of reliable and simple circuit, high safety, high sensitivity and high power.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of an embodiment of the present invention for performing a low-voltage controlled dc load forward/reverse conversion circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
IN the embodiment of the present invention, IN the embodiment of the low voltage controlled DC load forward/reverse conversion circuit, the schematic circuit diagram of the low voltage controlled DC load forward/reverse conversion circuit is shown IN fig. 1, the low voltage controlled DC load forward/reverse conversion circuit includes a left-turn power output circuit 1, a first power switch Q1, a second power switch Q2, a right-turn power output circuit 2, a circuit input interface DC _ IN _ DC _ MOTOR, a fuse L1, a left-turn ground control circuit 3, a right-turn ground control circuit 4 and a connecting member CN1, wherein the left-turn power output circuit 1 is connected to the first power switch Q1, the right-turn power output circuit 2 is connected to the second power switch Q2, the first power switch Q1 and the second power switch Q2 are both connected to the circuit input interface DC _ IN _ DC _ MOTOR, the circuit input interface DC _ IN _ DC _ MOTOR is connected to the fuse L, the left-turn ground control circuit Q1 and the second power switch Q2 are both connected to the circuit input interface DC _ IN _ DC _ mo 6326, the first power switch Q6326 is connected to the second power switch Q2, the first MOS switch is connected to the second power switch CN 2, the second power switch may be connected to the first MOS switch 2, the second MOS switch 2.
The forward-reverse conversion circuit for the small-voltage control direct-current load is a forward-reverse conversion circuit for the small-voltage control direct-current load under overcurrent protection, is particularly suitable for controlling motors capable of rotating forward and reverse under various voltages, and has the characteristics of reliability, simplicity, safety, high sensitivity, high power and the like.
IN this embodiment, the left-turn power output circuit 1 includes a first resistor R1, a second resistor R2, a fifth transistor Q5, a third resistor R3, and a fourth resistor R4, wherein one end of the first resistor R1 is connected to a DC _ power _ F _ GND _ ON output pin, the other end of the first resistor R1 is connected to one end of the second resistor R2 and a base of the fifth transistor Q5, the other end of the second resistor R2 and an emitter of the fifth transistor Q5 are grounded, a collector of the fifth transistor Q5 is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to a gate of the first MOS transistor Q1, and a source of the first MOS transistor Q1 is connected to the other end of the fourth resistor R4 and the circuit input interface DC _ IN _ DC _ power.
DC _ MOTOR _ F _ VCC _ ON led out by the MCU directly drives the left-turn power supply output circuit 1, the first resistor R1 divides voltage, the second resistor R2 pulls down to process an output signal and suspend state, when the DC _ MOTOR _ F _ VCC _ ON is electrified, the fifth triode Q5 is conducted, the first MOS transistor Q1 is conducted, and VCC is output to the second pin of the connecting piece CN 1.
IN this embodiment, the right-turn power output circuit 2 includes a fifth resistor R5, a sixth resistor R6, a sixth triode Q6, a seventh resistor R7, and an eighth resistor R8, a base of the sixth triode Q6 is respectively connected to one end of the seventh resistor R7 and one end of the eighth resistor R8, an emitter of the sixth triode Q6 and the other end of the eighth resistor R8 are both grounded, the other end of the seventh resistor R7 is connected to the DC _ moter _ R _ VCC _ C pin, a collector of the sixth triode Q6 is connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is respectively connected to one end of the fifth resistor R5 and a gate of the second MOS transistor Q2, and a source of the second MOS transistor Q2 is respectively connected to the other end of the fifth resistor R5 and the circuit input interface DC _ IN _ tor. The operation principle of the right-turn power output circuit 2 is similar to that of the left-turn power output circuit 1.
In this embodiment, the left-turn ground control circuit 3 includes a third MOS transistor Q3 and a ninth resistor R9, a gate of the third MOS transistor Q3 is connected to one end of the ninth resistor R9 and the DC _ MOTOR _ F _ GND _ ON output pin, the other end of the ninth resistor R9 and the gate of the third MOS transistor Q3 are both grounded, and a drain of the third MOS transistor Q3 is connected to the drain of the second MOS transistor Q2 and the first pin of the connection element CN 1.
When the DC _ MOTOR _ F _ GND _ ON is idle, the ninth resistor R9 is pulled down to be at a low level, the third MOS transistor Q3 is turned ON when the pin is driven, and the current flows to the ground after the MOTOR is driven by the connector CN1 and flows to the third MOS transistor Q3, so that the MOTOR rotates to enable the MOTOR to rotate left.
In this embodiment, the right-turn grounding control circuit 4 includes a tenth resistor R10 and a fourth MOS transistor Q4, a gate of the fourth MOS transistor Q4 is connected to one end of the tenth resistor R10 and the DC _ MOTOR _ R _ GND _ ON output pin, the other end of the tenth resistor R10 and a source of the fourth MOS transistor Q4 are both grounded, and a drain of the fourth MOS transistor Q4 is connected to the second pin of the connection component CN1 and the drain of the first MOS transistor Q1. The operating principle of the right-turn ground control circuit 4 is similar to that of the left-turn ground control circuit 3.
In this embodiment, the fifth transistor Q5 and the sixth transistor Q6 are both NPN transistors. The first MOS transistor M1, the second MOS transistor M2, the third MOS transistor M3 and the fourth MOS transistor M4 are all N-channel MOS transistors. Certainly, in practical applications, the fifth transistor Q5 and the sixth transistor Q6 may also be PNP transistors, and the first MOS transistor M1, the second MOS transistor M2, the third MOS transistor M3, and the fourth MOS transistor M4 may also be P-channel MOS transistors, but the structure of the circuit at this time also changes correspondingly.
In a word, the utility model discloses can carry out overcurrent protection, especially be applicable to the motor control that can just reverse under various voltages, the utility model discloses the circuit is reliable, simple, insurance, sensitivity height, power are big.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a carry out little voltage control direct current load just anti-switching circuit, its characterized in that, including the power output circuit that turns left, first switch, second switch, the power output circuit that turns right, circuit input interface, fuse, the ground control circuit that turns left, the ground control circuit that turns right and connecting piece, the power output circuit that turns left with first switch connects, the power output circuit that turns right with second switch connects, first switch and second switch all with circuit input interface connects, circuit input interface with the fuse is connected, the ground control circuit that turns left respectively with connecting piece and second switch connect, the ground control circuit that turns right respectively with the connecting piece with first switch connects.
2. The forward-reverse conversion circuit for a small-voltage controlled direct-current load according to claim 1, wherein the first power switch is a first MOS transistor, and the second power switch is a second MOS transistor.
3. The circuit for converting a direct current load into a small voltage according to claim 2, wherein the left-turn power output circuit comprises a first resistor, a second resistor, a fifth transistor, a third resistor and a fourth resistor, one end of the first resistor is connected to a DC _ MOTOR _ F _ GND _ ON output pin, the other end of the first resistor is connected to one end of the second resistor and a base of the fifth transistor, the other end of the second resistor and an emitter of the fifth transistor are grounded, a collector of the fifth transistor is connected to one end of the third resistor, the other end of the third resistor is connected to a gate of the first MOS transistor, and a source of the first MOS transistor is connected to the other end of the fourth resistor and the circuit input interface.
4. The circuit for converting a small-voltage-controlled direct-current load according to claim 3, wherein the right-turn power output circuit comprises a fifth resistor, a sixth triode, a seventh resistor and an eighth resistor, a base of the sixth triode is respectively connected to one end of the seventh resistor and one end of the eighth resistor, an emitter of the sixth triode and the other end of the eighth resistor are both grounded, the other end of the seventh resistor is connected to a DC _ MOTOR _ R _ VCC _ C pin, a collector of the sixth triode is connected to one end of the sixth resistor, the other end of the sixth resistor is respectively connected to one end of the fifth resistor and a gate of the second MOS transistor, and a source of the second MOS transistor is respectively connected to the other end of the fifth resistor and the circuit input interface.
5. The circuit for converting a small-voltage-controlled direct-current load according to claim 4, wherein the left-turn grounding control circuit comprises a third MOS transistor and a ninth resistor, a gate of the third MOS transistor is connected to one end of the ninth resistor and the output pin DC _ MOTOR _ F _ GND _ ON, respectively, the other end of the ninth resistor and a gate of the third MOS transistor are both grounded, and a drain of the third MOS transistor is connected to a drain of the second MOS transistor and the first pin of the connecting member, respectively.
6. The forward-reverse conversion circuit for the small-voltage controlled direct-current load according to claim 5, wherein the right-reverse grounding control circuit comprises a tenth resistor and a fourth MOS transistor, a gate of the fourth MOS transistor is connected to one end of the tenth resistor and the DC _ MOTOR _ R _ GND _ ON output pin respectively, the other end of the tenth resistor and a source of the fourth MOS transistor are both grounded, and a drain of the fourth MOS transistor is connected to the second pin of the connecting member and the drain of the first MOS transistor respectively.
7. The forward-reverse conversion circuit for the small-voltage controlled DC load according to claim 4, wherein the fifth transistor and the sixth transistor are NPN transistors.
8. The circuit for converting a small-voltage-controlled direct-current load according to claim 5, wherein the first MOS transistor, the second MOS transistor, the third MOS transistor and the fourth MOS transistor are all N-channel MOS transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922455559.4U CN211183395U (en) | 2019-12-28 | 2019-12-28 | Direct current load positive and negative conversion circuit for small voltage control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922455559.4U CN211183395U (en) | 2019-12-28 | 2019-12-28 | Direct current load positive and negative conversion circuit for small voltage control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211183395U true CN211183395U (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922455559.4U Active CN211183395U (en) | 2019-12-28 | 2019-12-28 | Direct current load positive and negative conversion circuit for small voltage control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211183395U (en) |
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2019
- 2019-12-28 CN CN201922455559.4U patent/CN211183395U/en active Active
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