Hallo Stefan
Thank you for the links. I must say I already have these. So it seems like we
are on the same wavelength. I am currently busy with the modulation of this
amplifier and will construct my first prototype within the next month. i have
amost all the materials needed. I must investigate a proper drive circuit and
also different modulation techniques.
Thus far my simulations on Simetrix are a success and the CW 7MHz Norcal we
bought here from Caltech are giving results as claimed. We confirmed 98%
efficiency.
I will keep you guys updated on the results. If anyone has advice and so on,
please tell me so I can keep an open mind on this topic.
73
Riaan
ZS4PR
-----Original Message-----
From: Esteban Sanchis [mailto:esteban.sanchis@uv.es]
Sent: 08 March 2005 11:19
To: riaan greef
Subject: Re: [Amps] Class E amd and MRF492
Riann. I am also very interested in this subject. I have read through the
papers of N. Sokal http://www.classeradio.com/sokal2corrected.pdf and it is
quite interesting.
I have still the doubt how to use them (drive them) with SSB signals. Please
keep me informed aswell.
There is also an forum for class E but it does not seem too technical
http://classe.monkeypuppet.com/ and a bit forgotten.
Kind regards,
Stefan
EA5FY
----- Original Message -----
From: "riaan greef" <riaang@vut.ac.za>
To: "Karl-Arne Markström" <sm0aom@telia.com>; <amps@contesting.com>
Sent: Tuesday, March 08, 2005 8:03 AM
Subject: Re: [Amps] Class E amd and MRF492
Hallo Karl
Thank you for the reply. It would be nice if you could send me the scanned
documents. Else if you send me the reference of the article (date,
publication etc.) I can also trace it through my library serice.
I am looking forward to seeing the information and hope to share my final
circuits with the group.
Regards
Riaan, ZS4PR
-----Original Message-----
From: Karl-Arne Markström [mailto:sm0aom@telia.com]
Sent: 08 March 2005 08:55
To: riaan greef
Subject: Re: [Amps] Class E amd and MRF492
Hello,
I have some material about Class-E amplifiers written by
Frederick Raab W1FR, that was included in the Nordic HF
Conference 2001 and 2004 proceedings.
The material is in paper form so I have to scan it and e-mail.
73/
Karl-Arne
SM0AOM
----- Original Message -----
From: "riaan greef" <riaang@vut.ac.za>
To: <amps@contesting.com>
Sent: Tuesday, March 08, 2005 6:50 AM
Subject: [Amps] Class E amd and MRF492
> Greetings from South Africa
>
> I am looking forward to some interesting threads on this list.
>
> I wonder if anyone has some information on the Class E type amplifiers. I
> am designing some to operate at various HF bands and wonder what pitfalls
> this project holds.
>
> Kind regards
>
> ZS4PR
>
> Riaan Greeff
> Research Technician : Applied Electronics and Electronic Communication
> Faculty of Engineering
> Vaal University of Technology
> (formerly Vaal Triangle Technikon)
> Private Bag X021
> Vanderbijlpark
> 1900
> South Africa
> Tel.: +27 16 950 9413
> Cell.: +27 83 581 8569
> Fax.: +27 16 950 9796
> Web: http://www.vut.ac.za
> e-mail.: riaang@vut.ac.za
> My Web: http://www.qsl.net/zs4pr
> My e-mail: zs4pr@qsl.net
> Packet.: ZS4PR@ZS0VTB.VTB.GAU.ZAF.AF
>
>
> TSUKUTLA NTSU TSUKUTLA, SOAR EAGLE SOAR
>
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