Capacitive load driving circuit and liquid crystal display
A capacitive load, driving circuit technology, applied in circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve problems such as overheating of output transistors, reduce the number of parts, prevent overheating, and improve safety. Effect
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[0059] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0060] figure 1 is a circuit diagram showing a schematic configuration of a capacitive load driving circuit according to an embodiment of the present invention. The capacitive load drive circuit is in image 3 The structure shown in is formed by adding an overcurrent protection circuit 23, and other structures are the same as image 3 The capacitive load drive circuit shown in is the same.
[0061] The overcurrent protection circuit 23 detects a short circuit (ground) between the output terminal 16 and the ground terminal 18 to stop or suppress the charging current supply operation of the charging current switch circuit 41 of the charging and discharging control circuit 22 . Furthermore, the overcurrent protection circuit 23 detects a short circuit (connection) between the output terminal 16 and the power supply terminal 17 to stop or suppress the discharge current ex...
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