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Owen Duffy · June 12th 08, 06:54 AM posted to rec.radio.amateur.antenna

(Richard Harrison) wrote in news:20731-4850859D-
:

I wrote:
"In Class C, the plate current pulses last less than a half cycle.
Practical efficiencies are in the range of 60 to 80 per cent."

Owen Duffy wrote:
"Again, not rectangular pulses, not nearly."

A pulse does not need to be rectangular. According to my electronics
dictionary: ...

Yes Richard, pulse can mean all things to all people... but you did say
"The PA is a switch. Almost no voltage across it when it is closed and no
current through it when it is open." That implies a rectangular current
pulse... and I think we are now agree that is not the case for Class B or
Class C (which were the stated scope of the OP's question).

Owen