Re: Voltage Swing

Lost'n Found wrote:
Hello.

I am using PSPICE to simulate the output stage of a tube amplifier. I am using a 420v DC and an output transformer.

The voltage on the plate of the tube swings between 840v and 420v. I know that the output transformer opposses the current change, but I thought that the voltage should swing up and below the 420v, not between 840v and 420v.

Is it operating correctly? I mean can the voltage swing between VDC Max and higher?

To a first approximation, the average voltage across a transformer winding must be zero. So I agree that the plate voltage for a transformer winding whose other end is tied to 420 volts, should swing above and below 420 volts.
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