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Old May 27th 10, 07:47 PM posted to rec.radio.amateur.antenna
Richard Harrison Richard Harrison is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 588
Default W2DU's Reflections III is now available from CQCommunication...

Roy Lewallen, W7EL wrote:
"Nut the statement which was made was that "Maximum power transfer
occurs when the source and load impedances are matched."

Inelegant and bereft of qualifications as it may be, I am the author of
that statement, and I stand by it.

Roy says: "This is not true, as the example demonstrates."

Robert L. Schrader says on page 43 of "Electronic Communication":
"To produce maximum power in any load, it is necessary that the load
resistance equal the internal resistance of the source."

I believe our statements are equivalent. Load a battery of a given
internal resistance with the same resistance as a load, and for a short
time the battery will deliver more power to that load than to any other
resistance larger or smaller.

Best regards, Richard Harrison. KB5WZI