Message-ID: <003301c82c25$718801d0$16e4fc3e@g3kev>
From: "hamilton mal" <g3kev.ham@virgin.net>
To: <rsgb_lf_group@blacksheep.org>
References: <000c01c82b85$97ec0010$2ee4fc3e@g3kev><47430398.8000702@telia.com><000201c82bc1$3c442300$2be4fc3e@g3kev> <20071120225305.4f9303d9@lurcher.twatt.local>
Date: Wed, 21 Nov 2007 10:00:27 -0000
MIME-Version: 1.0
Subject: Re: LF: CLASS E
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


You must have missed my article in the early days about  my class E and all
the parameters, and especially monitoring the waveform V for correct
operation. Things have moved on to class F and G but info is sparse maybe
you have details.
Ever thought about your own COMIC for some short stories and DX experiences.
G3KEV


----- Original Message -----
From: "John Pumford-Green GM4SLV" <gm4slv@sighthound.demon.co.uk>
To: <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, November 20, 2007 10:53 PM
Subject: Re: LF: CLASS E


>
> On Tue, 20 Nov 2007 16:57:18 -0000
> "hamilton mal" <g3kev.ham@virgin.net> wrote:
>
> > There has been very little response from anyone else about class
> > E amp experiences, I expect they have never heard about this type of
> > amplifier, or do not use them.
>
>
> Er....have I missed something...?
>
> I seem to remember several people responded when you asked the
> same question on Nov 4th. There were plenty of answers to your query
> about efficiency etc. with a few measured values from real amplifiers
> and some discussion of the theory and practice of switching PAs.
>
> I understood from the level of response that several people (myself
> included) were using Class-E amps. Perhaps this time round they have
> decided not to repeat their answers.
>
> I think that most people, despite your snide implication, have in fact
> "heard about this type of amplifier" and possibly know enough about
> them not to need to go over the same ground every few weeks for your
> entertainment.
>
>
> Since you've furnished us with some scant information about your own
> Class-E experiments perhaps you'd like to enlighten us to the actual
> performance figures, the hard facts that that you've tried to solicit
> from others?
>
>
>
> DC supply volts/current?
>
> Output power?
>
> Efficiency?
>
> Harmonic and spurious emissions?
>
> Temeprature rise of the heatsink after 10 hours key down at full power?
>
>
> Enquiring minds would like to know....
>
> John
>
>
>
>