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Mysterious schematic symbol? TL494

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ronsimpson said:
I think the IR2153 is not good for duty cycle and frequency. It does not have a error amp.
It is a NE555 and a half bridge gate driver.
It should work well for a unregulated high voltage power supply.
View attachment 126372
Click to expand...
I think there is no duty control in ir2153. At resonant frequency you can adjust power only with pair of blocking caps.
 
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