[AMPS] G2DAF

[Rich Measures]

>
>
>
>----------
>> From: Rich Measures <measures@vc.net>
>> To: amps@contesting.com
>> Subject: Re: [AMPS] G2DAF
>> 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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