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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+CLASS\s+E\s*$/: 11 ]

Total 11 documents matching your query.

1. Re: LF: CLASS E (score: 1)
Author: "hamilton mal" <[email protected]>
Date: Wed, 21 Nov 2007 10:01:47 +0100
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 in
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00064.html (11,537 bytes)

2. Re: LF: CLASS E (score: 1)
Author: "Steve McDonald" <[email protected]>
Date: Wed, 21 Nov 2007 10:19:39 -0800
Although mainly HF focused, there is an excellent online discussion / forum on class-e transmitters that some may find of interest : http://classe.monkeypuppet.com/viewforum.php?f=1 Steve / VE7SL May
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00201.html (9,849 bytes)

3. Re: LF: CLASS E (score: 1)
Author: John GM4SLV <[email protected]>
Date: Wed, 21 Nov 2007 14:43:08 +0000
Undoubtedly I was and certainly I have. Your snide comments aside, I'm referring to your recent reported measurements and optimisation of tuning components to achieve good drain waveform as recounted
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00255.html (11,994 bytes)

4. Re: LF: CLASS E (score: 1)
Author: "Johan H. Bodin" <[email protected]>
Date: Tue, 20 Nov 2007 16:56:08 +0100
Mal, for proper class E operation, the drain waveform must be allowed to be non-symmetrical so you cannot just use a center tapped output transformer. In other words, there must be no "hard coupling"
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00294.html (11,142 bytes)

5. Re: LF: CLASS E (score: 1)
Author: "hamilton mal" <[email protected]>
Date: Wed, 21 Nov 2007 14:14:07 +0100
You were a late starter on 500. I would say you have missed a lot. G3KEV
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00314.html (10,430 bytes)

6. Re: LF: CLASS E (score: 1)
Author: John Pumford-Green GM4SLV <[email protected]>
Date: Tue, 20 Nov 2007 22:53:05 +0000
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
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00319.html (10,631 bytes)

7. Re: LF: CLASS E (score: 1)
Author: John GM4SLV <[email protected]>
Date: Wed, 21 Nov 2007 10:17:23 +0000
I didn't miss it Mal... Nowhere have I seen your reported: DC Input Volts/Current RF Output Power Efficiency Others have replied to you with their own measured efficiency vs power so perhaps you can
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00398.html (9,913 bytes)

8. Re: LF: CLASS E (score: 1)
Author: [email protected]
Date: Tue, 20 Nov 2007 17:59:46 EST
In a message dated 20/11/2007 22:53:56 GMT Standard Time, [email protected] writes: Er....have I missed something...? -- Of course you have!! I think the appropriate reference started som
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00481.html (8,993 bytes)

9. Re: LF: CLASS E (score: 1)
Author: "hamilton mal" <[email protected]>
Date: Tue, 20 Nov 2007 22:04:58 +0100
Hi Johan Tnx for your observations and info on class E. connected in series, just use a single ended pa and choose the components to suit the power output required. The second harmonic and all other
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00494.html (12,111 bytes)

10. LF: CLASS E (score: 1)
Author: "hamilton mal" <[email protected]>
Date: Tue, 20 Nov 2007 14:58:41 +0100
Hi all Is anyone else using a class E PA on 500 or 137. Mine is single ended, maybe someone has a push pull design. 73 de Mal/G3KEV
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00510.html (8,448 bytes)

11. LF: CLASS E (score: 1)
Author: "mal hamilton" <[email protected]>
Date: Thu, 26 Nov 2009 11:42:02 +0100
MF and Co Getting suitable capacitors is the problem, not normally available from the junk box. Maybe a class F amp is the answer or the mechanical G turbo charged rumoured to be over 100% efficient
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00737.html (8,022 bytes)


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