[Amps] Big Solid State Power Amplifiers

[Steven Grant W4IIV]

http://hawkins.pair.com/wabcnow.shtml should give you a heads up on the operation of these broadcasting beasts.
they are totally digital, and uses square waves for RF genoration...they are not linear..but they are 90% efficient......steven, W4IIV

"R.Measures" <r at somis.org> wrote:


>This couldn't be farther from the truth...

** Dr. Schmidt. Please explain why high-efficiency BC-type designs are 
suitable for applications where linear operation over a range of 
frequencies is required. Tnx 
>
>Sincerely,
>
>Dr. William J. Schmidt, II K9HZ
>Trustee of the North American QRO - Central Division Club - K9ZC
>
>"Collector of Edison Wind-up Phonographs... Do you have one for me?"
>Email: bill at wjschmidt.com
>Alternate Email: wmschmidt at charter.net
>WebPage: www.wjschmidt.com
>
>
>
>----- Original Message ----- 
>From: "R.Measures" 
>To: ; " AMPS" 
>Sent: Monday, December 15, 2003 10:25 AM
>Subject: Re: [Amps] Big Solid State Power Amplifiers
>
>
>>
>>
>> >I don't know what designs you are familiar with, but combiner losses
>don't
>> >usually impact significantly on efficiency. That's why they are used in
>> >high-efficiency AM BC transmitters...
>> >
>> **High-efficiency BC-type designs are not suitable for applications where
>> linear operation over a range of frequencies is required.
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>
>
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STEVEN GRANT    W4IIV


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