Driving circuit and electrical stimulation device

Abstract

The invention discloses a driving circuit and an electrical stimulation device. The driving circuit comprises a first driving branch and a second driving branch, wherein control ends of the first driving branch and the second driving branch input the same control signal, the first driving branch is connected with control ends of a first triode and a fourth triode in the H-bridge circuit, the second driving branch is connected with control ends of a second triode and a third triode in the H-bridge circuit, the first driving branch is used for driving the first triode and the fourth triode to beconducted when the control signal is at a high level, the second driving branch is used for driving the second triode and the third triode to be conducted when the control signal is at a low level, when the first triode and the fourth triode are conducted, the direction of a voltage outputted by the H-bridge circuit is opposite to the direction of the voltage outputted by the H-bridge circuit when the second triode and the third triode are conducted. The driving circuit can avoid short circuit of the H-bridge circuit caused by control signal errors, and stability of the circuit is improved.

Description

technical field [0001] The present application relates to the technical field of electronic circuits, in particular to a driving circuit; and also to an electric stimulation device. Background technique [0002] The H-bridge circuit is an electronic circuit named after the shape of the circuit resembles the letter H. By controlling the switch state of each triode in the H-bridge circuit, the direction of the voltage / current at its output terminal can be changed. Such as figure 1 As shown, at present, for the control of the H-bridge circuit, two control signals are required, and each control signal controls two triodes in the H-bridge circuit respectively. However, when there is a problem with these two control signals, it is easy to cause a short circuit and then damage the H-bridge circuit. For example, when the two control signals are at high level, the four transistors in the H-bridge circuit are all turned on, resulting in a short circuit in the H-bridge circuit. , da...

AI Technical Summary

Problems solved by technology

However, when there is a problem with these two control signals, it is easy to cause a short circuit and then damage the H-bridge circuit. For example, when the two control signals are at high level, the four transistors in the H-bridge circuit are all turned on, resulting in a short circuit in the H-bridge circuit. , damage the H-bridge circuit, causing the H-bridge circuit to fail to work normally

[0003] Therefore, how to avoid the short circuit of the H-bridge circuit caused by the error of the control signal and increase the stability of the circuit has become a technical problem to be solved urgently by those skilled in the art.

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