[Lowfer] Class E vs. Class C what's your opinion ?

Chris Trask christrask at earthlink.net
Wed Jan 30 21:27:15 EST 2008


    For overall efficiency you can't beat Class E.  I wrote a paper for an
IEEE conference years ago for calculating the inductor and capacitor values,
and if it would be of any help I can send you a PDF copy.

Chris

     ,----------------------.       High Performance Mixers and
    /    What's all this     \    Amplifiers for RF Communications
   / extinct stuff, anyhow?  /
   \  _______,--------------'           Chris Trask / N7ZWY
  _ |/                                  Principal Engineer
 oo\                                  Sonoran Radio Research
(__)\       _                             P.O. Box 25240
  \  \    .'  `.                     Tempe, Arizona 85285-5240
   \  \  /      \
    \  '"        \                 IEEE Senior Member #40274515
     .       (  ) \
      '-| )__| :.  \              Email: christrask at earthlink.net
        | |  | | \  '.       http://www.home.earthlink.net/~christrask
       c__; c__;  '-..'>.__

                       Graphics by Loek Frederiks

----- Original Message -----
From: "Andy Bell" <ku4xr at yahoo.com>
To: <lowfer at mailman.qth.net>
Sent: Wednesday, January 30, 2008 7:13 PM
Subject: [Lowfer] Class E vs. Class C what's your opinion ?


> Hello all: I've been doing a lot of reading trying to
> determine a stable and cheap oscillator, and I have
> noticed a lot of info about Class E xmtrs for best
> efficiency, especially for a lowfer xmtr. If you have
> any experience with Class E; what's your opinion on
> the matter ? In terms of efficiency; cost and
> difficulty to construct and tune; and so forth. As
> always; all info. will be most appreciated.
> 73, Andy - KU4XR
>
>
>
____________________________________________________________________________
________
> Never miss a thing.  Make Yahoo your home page.
> http://www.yahoo.com/r/hs
> _______________________________________________
> >From the Lowfer mailing list
> Send messages to: Lowfer at mailman.qth.net
> To sub/unsub visit: http://mailman.qth.net/mailman/listinfo/lowfer
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.516 / Virus Database: 269.19.16/1251 - Release Date: 1/30/08
9:29 AM
>
>



More information about the Lowfer mailing list