>
>
>
>----------
>> From: Rich Measures <measures@vc.net>
>> To: amps@contesting.com
>> Subject: Re: [AMPS] G2DAF
To: <amps@contesting.com>
>> Date: 15 July 1999 01:46
>>
>>
>>
>>
>> >
>> >> ..... // Another example
>> >> is Maxwell's conjugate matching theorem. If it were 100% true,
amplifiers
>> >> could be no more than 50% efficient. .
>> >
>> >And the logic behind that statement is???
>> >
>> ? Power transfer is maximal when the resistance of the load equals the
>> internal of the generator. At this point, efficiency is 50%. However,
>> in practice amplifiers are c.60% efficient.
>>
>Which just goes to Prof Abrey's statement that "power amplifiers either have
a
>very low output impedance or a very high one, depending on the configuration
of the
>circuit".
>
? ¿?
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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