Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+input\/output\s+transformer\s+switching\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+input\/output\s+transformer\s+switching\s*$/: 9 ]

Total 9 documents matching your query.

1. [Amps] input/output transformer switching (score: 1): Author: kg7hf@comcast.net; Date: Wed, 12 Dec 2007 04:37:32 +0000; Hi everyone, Thanks for all the replies on the LK500, everyone seemed to converge on the same area to check out. I'm in the process of replacing the parasitic suppressor resistors. While I wait for p; /archives//html/Amps/2007-12/msg00136.html (7,768 bytes)
2. Re: [Amps] input/output transformer switching (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Thu, 13 Dec 2007 07:48:40 +0000; I doubt it would work. The impedances at the transistor side of the transformer are very low (few ohms) so any inductance from the switching will totally mess up the higher frequency operation. I su; /archives//html/Amps/2007-12/msg00149.html (8,224 bytes)
3. Re: [Amps] input/output transformer switching (score: 1): Author: kg7hf@comcast.net; Date: Thu, 13 Dec 2007 17:21:30 +0000; Hi Steve, Thanks for looking over the design. I didn't consider the impedance change of the relay, maybe somehow tune it out? I think what you describe is similar to this example, which is used in th; /archives//html/Amps/2007-12/msg00154.html (10,029 bytes)
4. Re: [Amps] input/output transformer switching (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Thu, 13 Dec 2007 09:59:47 -0800; type I've missed the original question in this thread, BUT, perhaps I can cast some light on the topic. in transformers. So is #67. #43 is a HIGH loss material at VHF, and is generally NOT suitable f; /archives//html/Amps/2007-12/msg00155.html (8,239 bytes)
5. Re: [Amps] input/output transformer switching (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Fri, 14 Dec 2007 18:14:41 +0000; I think that Tempo did a similar sort of thing with the 6N2, and there was a lovely amp using a pair of 3CX800s on the amps projects web site (the address escapes me) using the same idea. I've no id; /archives//html/Amps/2007-12/msg00163.html (8,279 bytes)
6. Re: [Amps] input/output transformer switching (score: 1): Author: kg7hf@comcast.net; Date: Sun, 16 Dec 2007 00:08:27 +0000; You have that right, I alreayd killed my one sample, so had to pay for the replacement. I know why it died, so I hopefully won't repeat that. _______________________________________________ Amps mai; /archives//html/Amps/2007-12/msg00165.html (7,272 bytes)
7. Re: [Amps] input/output transformer switching (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Sun, 16 Dec 2007 08:48:33 +0000; I've just noticed the prices Henry are selling for on ebay. It's not as big a hole as it used to be. I think I paid close on $500 for the first one I bought years ago. One thing with fets that's som; /archives//html/Amps/2007-12/msg00169.html (7,892 bytes)
8. Re: [Amps] input/output transformer switching (score: 1): Author: "Han Higasa" <higasa@plum.ocn.ne.jp>; Date: Sat, 22 Dec 2007 17:10:15 +0900; Paul, Even in gemini-package each FET devices are not exactly matched. So I think you need an independent gate bias circuits to enable adjustment of Iq of each FETs in a package. Set Iq of each FETs; /archives//html/Amps/2007-12/msg00197.html (9,272 bytes)
9. Re: [Amps] input/output transformer switching (score: 1): Author: "Han Higasa" <higasa@plum.ocn.ne.jp>; Date: Sat, 22 Dec 2007 21:00:09 +0900; Hi David, For sprit bias method the temperature compensation is not essential, provided not setting excessive Iq for each FETs with proper heat-radiation means because 141G or 150/151Gs are not so se; /archives//html/Amps/2007-12/msg00198.html (7,922 bytes)

Current List: 1 - 9
Page: [1]