CN212752122U - Drive circuit and electrical stimulation device - Google Patents
Drive circuit and electrical stimulation device Download PDFInfo
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- CN212752122U CN212752122U CN202021196498.0U CN202021196498U CN212752122U CN 212752122 U CN212752122 U CN 212752122U CN 202021196498 U CN202021196498 U CN 202021196498U CN 212752122 U CN212752122 U CN 212752122U
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Abstract
The application discloses a driving circuit and an electrical stimulation device, wherein the driving circuit comprises a first driving branch and a second driving branch; the control ends of the first driving branch and the second driving branch input the same path of control signals, the first driving branch is connected with the control ends of a first triode and a fourth triode in the H-bridge circuit, and the second driving branch is connected with the control ends of a second triode and a third triode in the H-bridge circuit; when the control signal is at a high level, the first driving branch works to drive the first triode and the fourth triode to be conducted; when the control signal is at a low level, the second driving branch works to drive the second triode to be conducted with the third triode; and when the second triode is conducted with the third triode, the direction of the voltage output by the H-bridge circuit is opposite to that of the voltage output by the H-bridge circuit. The drive circuit can avoid the H-bridge circuit short circuit caused by control signal error, and the circuit stability is improved.
Description
Technical Field
The present disclosure relates to electronic circuits, and more particularly, to a driving circuit; also relates to an electrical stimulation device.
Background
An H-bridge circuit is an electronic circuit, which is named because the shape of the circuit closely resembles the letter H. The direction of the voltage/current at the output end can be changed by controlling the switching state of each triode in the H-bridge circuit. As shown in fig. 1, currently, two control signals are required for controlling the H-bridge circuit, and each control signal controls two transistors in the H-bridge circuit. However, when these two control signals are in trouble, a short circuit is easily caused and the H-bridge circuit is damaged, for example, when the two control signals are both high level, four triodes in the H-bridge circuit are all turned on, which results in the short circuit of the H-bridge circuit and damages the H-bridge circuit, and causes the H-bridge circuit to be unable to be used normally.
Therefore, how to avoid the short circuit of the H-bridge circuit caused by the error of the control signal and increase the circuit stability has become an urgent technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The application aims at providing a drive circuit, can avoid causing H bridge circuit short circuit because of control signal makes mistakes, increase circuit stability. Another object of the present application is to provide an electrostimulation device which also has the technical effects described above.
In order to solve the above technical problem, the present application provides a driving circuit, including:
the first driving branch and the second driving branch; the control ends of the first driving branch and the second driving branch input the same control signal, the first driving branch is connected with the control ends of a first triode and a fourth triode in an H-bridge circuit, and the second driving branch is connected with the control ends of a second triode and a third triode in the H-bridge circuit;
when the control signal is at a high level, the first driving branch works to drive the first triode and the fourth triode to be conducted;
when the control signal is at a low level, the second driving branch works to drive the second triode and the third triode to be conducted;
wherein a voltage output by the H-bridge circuit when the first transistor and the fourth transistor are turned on is opposite in direction to a voltage output by the H-bridge circuit when the second transistor and the third transistor are turned on.
Optionally, the first driving branch comprises:
the circuit comprises a first resistor, a second resistor and a first switching tube;
a first end of the first resistor is used as a control end of the first driving branch circuit, the control signal is input, a second end of the first resistor is connected with a first end of the first switching tube, a second end of the first switching tube is connected with the second resistor in series and then is connected with a power supply, the second end of the first switching tube is used as an output end of the first driving branch circuit and is connected with control ends of the first triode and the fourth triode, and a third end of the first switching tube is grounded; when the control signal is at a high level, the first switch tube is conducted.
Optionally, the second driving branch comprises:
the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the second switching tube and the third switching tube;
a first end of the third resistor is used as a control end of the second driving branch circuit, the control signal is input, a second end of the third resistor is connected with a first end of the second switching tube, a second end of the second switching tube is connected with the power supply after being connected with the fourth resistor in series, and is connected with a first end of the third switching tube after being connected with the fifth resistor in series, a third end of the second switching tube is grounded, a second end of the third switching tube is connected with the power supply after being connected with the sixth resistor in series, the second end of the third switching tube is used as an output end of the second driving branch circuit to be connected with control ends of the second triode and the third triode, and a third end of the third switching tube is grounded; when the control signal is at a low level, the second switching tube is turned off, and the third switching tube is turned on.
Optionally, the first switching tube, the second switching tube, and the third switching tube are all NPN-type triodes.
Optionally, the first driving branch comprises:
a seventh resistor, an eighth resistor and a fourth switching tube;
a first end of the fourth switching tube is used as an input end of the first driving branch circuit, the control signal is input, a second end of the fourth switching tube is connected with the power supply after being connected with the seventh resistor in series and is used as an output end of the first driving branch circuit, the control ends of the first triode and the fourth triode are connected, a third end of the fourth switching tube is grounded, and the eighth resistor is connected with the first end and the third end of the fourth switching tube in parallel; when the control signal is at a high level, the fourth switch tube is switched on.
Optionally, the second driving branch comprises:
a ninth resistor, a tenth resistor, a fifth switch tube and a NOT gate;
the input end of the not gate is used as the input end of the second driving branch circuit, the control signal is input, the output end of the not gate is connected with the ninth resistor in series and then is connected with the first end of the fifth switching tube, the second end of the fifth switching tube is connected with the tenth resistor in series and then is connected with the power supply, the second triode and the control end of the third triode are connected, and the third end of the fifth switching tube is grounded; when the control signal is at a low level, the fifth switch tube is conducted.
Optionally, the fourth switching tube and the fifth switching tube are both NPN-type triodes.
In order to solve the technical problem, the present application further provides an electrical stimulation apparatus including the driving circuit as described above.
The application provides a drive circuit, includes: the first driving branch and the second driving branch; the control ends of the first driving branch and the second driving branch input the same control signal, the first driving branch is connected with the control ends of a first triode and a fourth triode in an H-bridge circuit, and the second driving branch is connected with the control ends of a second triode and a third triode in the H-bridge circuit; when the control signal is at a high level, the first driving branch works to drive the first triode and the fourth triode to be conducted; when the control signal is at a low level, the second driving branch works to drive the second triode and the third triode to be conducted; wherein a voltage output by the H-bridge circuit when the first transistor and the fourth transistor are turned on is opposite in direction to a voltage output by the H-bridge circuit when the second transistor and the third transistor are turned on.
Therefore, compared with the traditional technical scheme that two control signals are adopted to control each triode in the H-bridge circuit, the driving circuit provided by the application can realize the control of each triode in the H-bridge circuit only by one control signal. The control signal is simultaneously input into the first driving branch and the second driving branch, so that one driving branch works, the other driving branch does not work, and the working driving branch drives the triode in the H-bridge circuit connected with the working driving branch to be conducted. The working condition of each driving branch can be changed by changing the level of the control signal, so that the conduction state of each triode in the H-bridge circuit is changed, and the H-bridge circuit outputs an electrical stimulation signal with a corresponding waveform. The drive circuit adopts one path of control signal to control the H-bridge circuit, effectively avoids the circuit short circuit caused by the error of the control signal when adopting a plurality of control signals, and increases the stability of the circuit.
The electrical stimulation device provided by the application also has the technical effects.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a control method of a conventional H-bridge circuit;
fig. 2 is a schematic diagram of a driving circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of another driving circuit provided in the embodiment of the present application;
fig. 4 is a schematic diagram of another driving circuit provided in the embodiment of the present application.
Detailed Description
The core of the application is to provide a driving circuit, which can avoid the short circuit of an H-bridge circuit caused by the error of a control signal and increase the stability of the circuit. Another core of the present application is to provide an electrical stimulation device, which also has the above technical effects.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 2, fig. 2 is a schematic diagram of a driving circuit according to an embodiment of the present disclosure, and referring to fig. 2, the driving circuit includes:
a first driving branch 10 and a second driving branch 20; the control ends of the first driving branch 10 and the second driving branch 20 input the same control signal, the first driving branch 10 is connected with the control ends of a first triode Q1 and a fourth triode Q4 in the H-bridge circuit, and the second driving branch 20 is connected with the control ends of a second triode Q2 and a third triode Q3 in the H-bridge circuit;
when the control signal is at a high level, the first driving branch 10 operates to drive the first transistor Q1 and the fourth transistor Q4 to be conducted;
when the control signal is at a low level, the second driving branch 20 operates to drive the second transistor Q2 to be conducted with the third transistor Q3;
the voltage output by the H-bridge circuit when the first transistor Q1 and the fourth transistor Q4 are turned on is opposite to the voltage output by the H-bridge circuit when the second transistor Q2 and the third transistor Q3 are turned on.
Specifically, the driving circuit provided by the present application includes two driving branches, i.e., a first driving branch 10 and a second driving branch 20. The control ends of the first driving branch 10 and the second driving branch 20 are connected to a controller, and the same control signal is input to the first driving branch 10 and the second driving branch 20. The first driving branch 10 is connected to the control terminals of the first transistor Q1 and the fourth transistor Q4 in the H-bridge circuit, and the second driving branch 20 is connected to the control terminals of the second transistor Q2 and the third transistor Q3 in the H-bridge circuit.
When the control signals input into the first driving branch 10 and the second driving branch 20 are at a high level, the first driving branch 10 is operated, the second driving branch 20 does not operate, and the operated first driving branch 10 drives the first transistor Q1 and the fourth transistor Q4 in the H-bridge circuit connected thereto to be turned on. Meanwhile, since the second driving branch 20 does not operate, both the second transistor Q2 and the third transistor Q3 in the H-bridge circuit are turned off.
In contrast, when the control signals input to the first driving branch 10 and the second driving branch 20 are at a low level, the first driving branch 10 does not operate, the second driving branch 20 operates, and the second driving branch 20 that operates drives the second transistor Q2 and the third transistor Q3 in the H-bridge circuit connected thereto to be turned on. Meanwhile, since the first driving branch 10 does not operate, both the first transistor Q1 and the fourth transistor Q4 in the H-bridge circuit are turned off.
The voltage output by the H-bridge circuit when the first transistor Q1 and the fourth transistor Q4 are turned on is in the opposite direction of the voltage output by the H-bridge circuit when the second transistor Q2 and the third transistor Q3 are turned on. If the H-bridge circuit outputs a forward voltage when the first transistor Q1 and the fourth transistor Q4 are turned on, the H-bridge circuit outputs a reverse voltage when the second transistor Q2 and the third transistor Q3 are turned on. Therefore, the waveform of the electrical stimulation signal output by the output end of the H-bridge circuit can be adjusted by changing the frequency of the high and low levels of the control signal.
As shown in fig. 3, in a specific embodiment, the first driving branch 10 includes: a first resistor R1, a second resistor R2 and a first switch tube S1; a first end of the first resistor R1 is used as a control end of the first driving branch 10 to input a control signal, a second end of the first resistor R1 is connected to a first end of the first switch tube S1, a second end of the first switch tube S1 is connected to the power supply after being connected in series with the second resistor R2, and is used as an output end of the first driving branch 10 to be connected to control ends of the first triode Q1 and the fourth triode Q4, and a third end of the first switch tube S1 is grounded. When the control signal is high, the first switch tube S1 is turned on.
Specifically, in this embodiment, the first driving branch 10 includes two resistors and a switching tube. When the control signal is high, the first switch tube S1 is turned on. After the first switch tube S1 is turned on, the level of the second terminal of the first switch tube S1 changes from high level to low level, so that the levels of the control terminals of the first transistor Q1 and the fourth transistor Q4 in the H-bridge circuit change from high level to low level, and the first transistor Q1 and the fourth transistor Q4 are turned on.
Referring to fig. 3, in a specific embodiment, the second driving branch 20 includes: a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second switch tube S2 and a third switch tube S3; a first end of the third resistor R3 is used as a control end of the second driving branch 20 to input a control signal, a second end of the third resistor R3 is connected to a first end of the second switch tube S2, a second end of the second switch tube S2 is connected to the power supply after being connected to the fourth resistor R4 in series, and is connected to a first end of the third switch tube S3 after being connected to the fifth resistor R5 in series, a third end of the second switch tube S2 is grounded, a second end of the third switch tube S3 is connected to the sixth resistor R6 in series and is connected to the power supply, and is used as an output end of the second driving branch 20 to be connected to the control ends of the second triode Q2 and the third triode Q3, and a third end of the third switch tube S3 is grounded. When the control signal is at a low level, the second switch tube S2 is turned off, and the third switch tube S3 is turned on.
Specifically, in the present embodiment, the second driving branch 20 includes four resistors and two switching tubes. When the control signal is at a low level, the second switch tube S2 is turned off, and the third switch tube S3 is turned on. After the third switching tube S3 is turned on, the level of the second terminal of the third switching tube S3 changes from high level to low level, so that the levels of the control terminals of the second transistor Q2 and the third transistor Q3 in the H-bridge circuit change from high level to low level, and the second transistor Q2 and the third transistor Q3 are turned on.
Further, referring to fig. 3, in a specific embodiment, the first switching tube S1, the second switching tube S2, and the third switching tube S3 are all NPN transistors. Specifically, a control signal is input to the base of the first switch tube S1, the collector of the first switch tube S1 is connected in series with a resistor and then connected to a power supply, the base of the first transistor Q1 and the base of the fourth transistor Q4 in the H-bridge circuit are connected, and the emitter of the first switch tube S1 is grounded. The base electrode of the second switch tube S2 inputs a control signal, the collector electrode of the second switch tube S2 is connected with a power supply after being connected with a resistor in series, and is connected with the base electrode of the third switch tube S3 after being connected with the resistor in series, the collector electrode of the third switch tube S3 is connected with the power supply after being connected with the resistor in series, and is connected with the base electrodes of the second triode Q2 and the third triode Q3 in the H-bridge circuit, and the emitting electrode of the third switch tube S3 is grounded.
When the control signal is at a high level, the base of the first switch tube S1 is influenced by the level of the control signal to turn on the first switch tube S1. After the first switch tube S1 is turned on, the collector of the first switch tube S1 changes from high level to low level connected to the emitter thereof, so that the levels of the bases of the first transistor Q1 and the fourth transistor Q4 in the H-bridge circuit change to low level, and at this time, the first transistor Q1 and the fourth transistor Q4 in the H-bridge circuit are turned on. Meanwhile, when the control signal is at a high level, the second switching tube S2 is turned on, and the collector level thereof is changed from a high level to a low level, so that the base level of the third switching tube S3 is changed from a high level to a low level, the third switching tube S3 is turned off, and the second transistor Q2 and the third transistor Q3 in the H-bridge circuit are turned off.
When the control signal is at a low level, the first switch tube S1 is turned off, and at this time, the level of the collector of the first switch tube S1 is at a high level, so that the levels of the bases of the first triode Q1 and the fourth triode Q4 in the H-bridge circuit are at a high level, and at this time, the first triode Q1 and the fourth triode Q4 in the H-bridge circuit are turned off. Meanwhile, when the control signal is at a low level, the second switching tube S2 is turned off, the collector thereof is at a high level, the base of the third switching tube S3 is at a high level, and the third switching tube S3 is turned on. After the third switching tube S3 is turned on, the collector of the third switching tube S3 changes from high level to low level to which the emitter thereof is connected, so that the levels of the bases of the second transistor Q2 and the third transistor Q3 in the H-bridge circuit change to low level, and at this time, the second transistor Q2 and the third transistor Q3 in the H-bridge circuit are turned on.
In addition, referring to fig. 4, in another specific embodiment, the first driving branch 10 includes:
a seventh resistor R7, an eighth resistor R8 and a fourth switch tube S4; a first end of the fourth switching tube S4 is used as an input end of the first driving branch 10 to input a control signal, a second end of the fourth switching tube S4 is connected in series with the seventh resistor R7 and then connected to a power supply, and is used as an output end of the first driving branch 10 to connect control ends of the first triode Q1 and the fourth triode Q4, a third end of the fourth switching tube S4 is grounded, and the eighth resistor R8 is connected in parallel to the first end and the third end of the fourth switching tube S4.
Specifically, in this embodiment, the first driving branch 10 includes two resistors and a switching tube. When the control signal is at a high level, the fourth switching tube S4 is turned on. After the fourth switching tube S4 is turned on, the level of the second end of the fourth switching tube S4 is changed from the high level to the low level, so that the levels of the control ends of the first triode Q1 and the fourth triode Q4 in the H-bridge circuit are changed from the high level to the low level, and the first triode Q1 and the fourth triode Q4 are turned on.
Referring to fig. 4, in another specific embodiment, the second driving branch 20 includes:
a ninth resistor R9, a tenth resistor R10, a fifth switch tube S5 and a not gate (U1 shown in the figure); the input end of the not gate is used as the input end of the second driving branch 20, a control signal is input, the output end of the not gate is connected in series with the ninth resistor R9 and then connected with the first end of the fifth switching tube S5, the second end of the fifth switching tube S5 is connected in series with the tenth resistor R10 and then connected with the power supply, and is connected with the control ends of the second triode Q2 and the third triode Q3, and the third end of the fifth switching tube S5 is grounded.
Specifically, in this embodiment, the second driving circuit includes two resistors, a switching tube and a not gate. When the control signal is at a low level, the low level is inverted by the not gate and then becomes a high level, the high level is input to the first end of the fifth switch tube S5, the fifth switch tube S5 is turned on, the level of the second end of the fifth switch tube S5 is changed from the high level to the low level, so that the levels of the control ends of the second triode Q2 and the third triode Q3 in the H-bridge circuit are changed from the high level to the low level, and the second triode Q2 is turned on with the third triode Q3.
Further, referring to fig. 4, in a specific embodiment, the fourth switching transistor S4 and the fifth switching transistor S5 are NPN transistors. Specifically, a control signal is input to the base of the fourth switching tube S4, the collector of the fourth switching tube S4 is connected in series with a resistor and then connected to a power supply, the base of the first transistor Q1 and the base of the fourth transistor Q4 in the H-bridge circuit are connected, and the emitter of the fourth switching tube S4 is grounded. The input end of the NOT gate inputs a control signal, the output end of the NOT gate is connected with the base electrode of the fifth switch tube S5, the collector electrode of the fifth switch tube S5 is connected with a power supply after being connected with a resistor in series, the collector electrode of the fifth switch tube S5 is connected with the base electrodes of the second triode Q2 and the third triode Q3 in the H-bridge circuit, and the emitting electrode of the fifth switch tube S5 is grounded.
When the control signal is at a high level, the base of the fourth switching tube S4 is influenced by the level of the control signal to turn on the fourth switching tube S4. After the fourth switching tube S4 is turned on, the collector of the fourth switching tube S4 is changed from a high level to a low level to which the emitter thereof is connected, so that the levels of the bases of the first triode Q1 and the fourth triode Q4 in the H-bridge circuit are changed to a low level, and at this time, the first triode Q1 and the fourth triode Q4 in the H-bridge circuit are turned on. Meanwhile, when the control signal is at a high level, after the control signal is inverted by the not gate, the level input to the fifth switching tube S5 is at a low level, the fifth switching tube S5 is turned off, and the second triode Q2 and the third triode Q3 in the H-bridge circuit are turned off.
When the control signal is at a low level, the fourth switching tube S4 is turned off, and at this time, the level of the collector of the fourth switching tube S4 is at a high level, so that the levels of the bases of the first triode Q1 and the fourth triode Q4 in the H-bridge circuit are at a high level, and at this time, the first triode Q1 and the fourth triode Q4 in the H-bridge circuit are turned off. Meanwhile, when the control signal is at a low level, after the control signal is inverted by the not gate, the level of the input signal to the fifth switch tube S5 is at a high level, and the fifth switch tube S5 is turned on. After the fifth switching tube S5 is turned on, the collector of the fifth switching tube S5 changes from high level to low level to which the emitter thereof is connected, so that the levels of the bases of the second transistor Q2 and the third transistor Q3 in the H-bridge circuit change to low level, and at this time, the second transistor Q2 and the third transistor Q3 in the H-bridge circuit are turned on.
In summary, the driving circuit provided in the present application can control each transistor in the H-bridge circuit with only one control signal. The control signal is simultaneously input into the first driving branch and the second driving branch, so that one driving branch works, the other driving branch does not work, and the working driving branch drives the triode in the H-bridge circuit connected with the working driving branch to be conducted. The working condition of each driving branch can be changed by changing the level of the control signal, so that the conduction state of each triode in the H-bridge circuit is changed, and the H-bridge circuit outputs an electrical stimulation signal with a corresponding waveform. The drive circuit adopts one path of control signal to control the H-bridge circuit, effectively avoids the circuit short circuit caused by the error of the control signal when adopting a plurality of control signals, and increases the stability of the circuit.
The present application also provides an electrostimulation device comprising a drive circuit as described above. For the introduction of the electrical stimulation apparatus provided in the present application, please refer to the embodiment of the driving circuit, which is not described herein again.
Because the situation is complicated and cannot be illustrated by a list, those skilled in the art can appreciate that there can be many examples in combination with the actual situation under the basic principle of the embodiments provided in the present application and that it is within the scope of the present application without sufficient inventive effort.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The driving circuit and the electrostimulation device provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A driver circuit, comprising:
the first driving branch and the second driving branch; the control ends of the first driving branch and the second driving branch input the same control signal, the first driving branch is connected with the control ends of a first triode and a fourth triode in an H-bridge circuit, and the second driving branch is connected with the control ends of a second triode and a third triode in the H-bridge circuit;
when the control signal is at a high level, the first driving branch works to drive the first triode and the fourth triode to be conducted;
when the control signal is at a low level, the second driving branch works to drive the second triode and the third triode to be conducted;
wherein a voltage output by the H-bridge circuit when the first transistor and the fourth transistor are turned on is opposite in direction to a voltage output by the H-bridge circuit when the second transistor and the third transistor are turned on.
2. The driving circuit of claim 1, wherein the first driving branch comprises:
the circuit comprises a first resistor, a second resistor and a first switching tube;
a first end of the first resistor is used as a control end of the first driving branch circuit, the control signal is input, a second end of the first resistor is connected with a first end of the first switching tube, a second end of the first switching tube is connected with the second resistor in series and then is connected with a power supply, the second end of the first switching tube is used as an output end of the first driving branch circuit and is connected with control ends of the first triode and the fourth triode, and a third end of the first switching tube is grounded; when the control signal is at a high level, the first switch tube is conducted.
3. The driving circuit of claim 2, wherein the second driving branch comprises:
the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the second switching tube and the third switching tube;
a first end of the third resistor is used as a control end of the second driving branch circuit, the control signal is input, a second end of the third resistor is connected with a first end of the second switching tube, a second end of the second switching tube is connected with the power supply after being connected with the fourth resistor in series, and is connected with a first end of the third switching tube after being connected with the fifth resistor in series, a third end of the second switching tube is grounded, a second end of the third switching tube is connected with the power supply after being connected with the sixth resistor in series, the second end of the third switching tube is used as an output end of the second driving branch circuit to be connected with control ends of the second triode and the third triode, and a third end of the third switching tube is grounded; when the control signal is at a low level, the second switching tube is turned off, and the third switching tube is turned on.
4. The driving circuit according to claim 3, wherein the first switching tube, the second switching tube and the third switching tube are all NPN type triodes.
5. The driving circuit of claim 1, wherein the first driving branch comprises:
a seventh resistor, an eighth resistor and a fourth switching tube;
a first end of the fourth switching tube is used as an input end of the first driving branch circuit, the control signal is input, a second end of the fourth switching tube is connected with the seventh resistor in series and then is connected with a power supply, the second end of the fourth switching tube is used as an output end of the first driving branch circuit, the second end of the fourth switching tube is connected with control ends of the first triode and the fourth triode, a third end of the fourth switching tube is grounded, and the eighth resistor is connected with the first end and the third end of the fourth switching tube in parallel; when the control signal is at a high level, the fourth switch tube is switched on.
6. The driving circuit of claim 5, wherein the second driving branch comprises:
a ninth resistor, a tenth resistor, a fifth switch tube and a NOT gate;
the input end of the not gate is used as the input end of the second driving branch circuit, the control signal is input, the output end of the not gate is connected with the ninth resistor in series and then is connected with the first end of the fifth switching tube, the second end of the fifth switching tube is connected with the tenth resistor in series and then is connected with the power supply, the second triode and the control end of the third triode are connected, and the third end of the fifth switching tube is grounded; when the control signal is at a low level, the fifth switch tube is conducted.
7. The driving circuit according to claim 6, wherein the fourth switching tube and the fifth switching tube are both NPN type triodes.
8. An electro-stimulation device, characterized in that it comprises a driving circuit according to any one of claims 1 to 7.
Priority Applications (1)
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| CN202021196498.0U CN212752122U (en) | 2020-06-24 | 2020-06-24 | Drive circuit and electrical stimulation device |
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| CN202021196498.0U CN212752122U (en) | 2020-06-24 | 2020-06-24 | Drive circuit and electrical stimulation device |
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