[AMPS] G2DAF

[John Fielding]

----------
> 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".

John	ZS5JF 
> 
> Rich...
> 
> R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  
> 
> 
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