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| Subject: | Re: LF: Re: RE: 500 G3WCB QRV 503.500kHz |
| From: | "Johan H. Bodin" <[email protected]> |
| Date: | Fri, 09 Mar 2007 23:43:51 +0100 |
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| In-reply-to: | <001f01c76298$cb2ca440$0300a8c0@lark> |
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Hi Gary, Alan, yes, as Alan says, class E amplifiers are very forgiving. In addition to Tonne's program and Alan's Excel spreadsheet you may want to have a look at Nathan Sokal's QEX article to learn how to tune the amplifier for maximum efficiency using an oscilloscope looking at the FET drain waveform. Adjust the FET parallel C and the series LC tank to get a "soft landing" before FET turn-on again. http://www.classeradio.com/sokal2corrected.pdf By the way, Nathan Sokal, WA1HQC, "invented" class E! Alan Melia skrev: So will my Excel spreadsheet |
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