Panasonic inverter heat pump user manual

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Subject: 12/120V inverter again Posted on: Mar 05 2004 PM Message: Very popular topic.. The other side of the cap is connected to collector.

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Look at the schematics: the base of the transistor never gets more than 1V above emitter voltage - when the transistor is opened; when the transistor is closed, the base voltage may go well below 0.

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What caught my attention is the fact that both tantalum caps showed in - as I think - reversed polarity.

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When transistor opened, it goes to almost 0; but when it is closed, it goes well above 12V (without a diode; 13V with a diode in place).


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