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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+CLASS\s+D\s+and\s+E\s*$/: 10 ]

Total 10 documents matching your query.

1. RE: LF: CLASS D and E (score: 1)
Author: "kd4wov" <[email protected]>
Date: Sun, 4 Nov 2007 09:05:03 -0500
Wow, where is the best place to get info on the D and E class amps? --Original Message-- From: [email protected] [mailto:[email protected]]On Behalf Of Dexter McInty
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00084.html (10,665 bytes)

2. Re: LF: CLASS D and E (score: 1)
Author: John Pumford-Green GM4SLV <[email protected]>
Date: Sun, 4 Nov 2007 13:24:52 +0000
Just checked my Class-E IRF150 amp into load. At 50W output :- Dc supply = 18.7v at 3.4A Efficiency = 78% John -- John GM4SLV IP90gg Clousta, Shetland
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00183.html (10,044 bytes)

3. Re: LF: CLASS D and E (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Sun, 04 Nov 2007 15:46:52 +0100
Hello Mal, with my 136kHz PA (variant of the G3YXM Class-D push-pull) I get 450W output with 56V/9.5A supply, thus 85% efficiency. I once tried a 50W class-E PA and got over 90% efficiency with corre
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00190.html (10,962 bytes)

4. Re: LF: CLASS D and E (score: 1)
Author: Dexter McIntyre W4DEX <[email protected]>
Date: Sun, 04 Nov 2007 08:54:47 -0500
86% efficiency at 400 watts out with GØMRF amp and MØBMU mod is what I get. W4DEX, WD2XKO 73 de Mal/G3KEV
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00192.html (9,962 bytes)

5. Re: LF: CLASS D and E (score: 1)
Author: "Johan H. Bodin" <[email protected]>
Date: Mon, 05 Nov 2007 12:28:13 +0100
These articles have the information you need to design and tune a class E amplifier: http://www.arrl.org/tis/info/pdf/010102qex009.pdf http://www.cs.berkeley.edu/~culler/AIIT/papers/radio/Sokal%20AAC
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00259.html (10,194 bytes)

6. RE: LF: CLASS D and E (score: 1)
Author: "kd4wov" <[email protected]>
Date: Mon, 5 Nov 2007 07:07:41 -0500
Thank you, I will take a look. de kd4wov These articles have the information you need to design and tune a class E amplifier: http://www.arrl.org/tis/info/pdf/010102qex009.pdf http://www.cs.berkeley.
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00474.html (10,791 bytes)

7. Re: LF: CLASS D and E (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sun, 04 Nov 2007 14:39:36 +0100
Class E ( and I think also probably Class D but I am not sure about that one) will only give maximum efficiency at the design power loading. You cannot tune for max smoke (well you can if you have di
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00513.html (11,920 bytes)

8. LF: CLASS D and E (score: 1)
Author: "hamilton mal" <[email protected]>
Date: Sun, 04 Nov 2007 12:29:57 +0100
Hi all Class D and E amplifiers are supposed to give around 80/90 % efficiency. Has anyone actually achieved these figures. It seems anything above 60% is hard to arrive at using normal coils/capacit
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00527.html (8,736 bytes)

9. Re: LF: CLASS D and E (score: 1)
Author: John Pumford-Green GM4SLV <[email protected]>
Date: Sun, 4 Nov 2007 12:57:53 +0000
Hello Mal & LF, The best I've acheived with Class-E has been about 70-75%. I understand that you're supposed to select values of components and tune the o/p stage for best efficiency at your chosen D
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00583.html (9,979 bytes)

10. Re: LF: CLASS D and E (score: 1)
Author: Piotr Mynarski <[email protected]>
Date: Sun, 04 Nov 2007 16:28:57 +0100
Hi all Class D and E amplifiers are supposed to give around 80/90 % efficiency. Has anyone actually achieved these figures. It seems anything above 60% is hard to arrive at using normal coils/capaci
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00585.html (10,563 bytes)


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