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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+High\s+efficiency\s+broadband\s+designs\s*$/: 5 ]

Total 5 documents matching your query.

1. [Amps] High efficiency broadband designs (score: 1)
Author: Dave Haupt <emailw8nf@yahoo.com>
Date: Tue, 16 Dec 2003 13:09:12 -0800 (PST)
In the late 1980s, one of the engineers I worked with had recently come from Continental Electronics of Dallas, TX. The most recent transmitter design on which he had worked at Continental was a mult
/archives//html/Amps/2003-12/msg00270.html (7,676 bytes)

2. Re: [Amps] High efficiency broadband designs (score: 1)
Author: R.Measures <r@somis.org>
Date: Wed, 17 Dec 2003 01:52:41 -0800
** Dave -- Why not design a 90% efficient linear amplifier for the HF Ham bands, document the construction process, and show us how to on your Web site. ______________________________________________
/archives//html/Amps/2003-12/msg00276.html (8,638 bytes)

3. Re: [Amps] High efficiency broadband designs (score: 1)
Author: Dave Haupt <emailw8nf@yahoo.com>
Date: Wed, 17 Dec 2003 06:19:47 -0800 (PST)
The documentation part is done. Check out the textbooks and articles written over the years by W1FR, Fritz (aka Frederick) Raab. He has built and documented an envelope removal and restoration high e
/archives//html/Amps/2003-12/msg00281.html (10,439 bytes)

4. Re: [Amps] High efficiency broadband designs (score: 1)
Author: Brian Moran <brianmo@yahoo.com>
Date: Wed, 17 Dec 2003 22:49:31 -0800 (PST)
The Class-E AM folks are doing some interesting things -- Tee the RF input -- one side to an added envelope detector, output of this to PWM your power supply to the ClassE amp module, other side of t
/archives//html/Amps/2003-12/msg00289.html (13,271 bytes)

5. Re: [Amps] High efficiency broadband designs (score: 1)
Author: Steve Thompson <g8gsq@qsl.net>
Date: Thu, 18 Dec 2003 15:37:29 +0000
It's many years since I did some class-E work. To get the switching speed needed for the really high efficiency needed a small device, which was ok as the efficiency was high and dissipation low. Tha
/archives//html/Amps/2003-12/msg00297.html (8,557 bytes)


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