Capacitive load driving circuit
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United States of America Patent
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Oct 10, 2017
Issued Date -
N/A
app pub date -
Aug 23, 2012
filing date -
Nov 2, 2011
priority date (Note) -
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Abstract
A driving circuit is a circuit selectively outputting one of a staircase wave and a square wave from an output terminal, to drive a capacitive load, and includes a first power source supplying a constant voltage VH, a first FET connected between the output terminal and the first power source, a first transformer in which an output side coil is connected to a gate of the first FET, a first input terminal connected to an input side coil of the first transformer via a capacitive element, a second power source supplying a constant voltage VL, a second FET connected between the output terminal and the second power source, a second transformer in which an output side coil is connected to a gate of the second FET, and a second input terminal connected to an input side coil of the second transformer via a capacitive element.
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