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1. Re: [Amps] Grid vs cathode driven (score: 1): Author: "Hsu" <Jbenson@sohu.com>; Date: Fri, 4 Aug 2006 13:02:53 +0800; Hi, Many discusstion about this question, thanks everyone! Many years ago , some AF power amplifier uesd 811A in push-pull, worked in Class B or Class AB2, I think we can use similar design in RF amp; /archives//html/Amps/2006-08/msg00128.html (8,751 bytes)
2. Re: [Amps] Grid vs cathode driven (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Fri, 4 Aug 2006 10:13:44 +0200 (CEST); I would be very dubious about the practicality of making the transformer. You're looking for a wideband transformer from about 13k ohm or so down to whatever, and that means a lot of primary inductan; /archives//html/Amps/2006-08/msg00134.html (7,547 bytes)
3. Re: [Amps] Grid vs cathode driven (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Fri, 04 Aug 2006 10:11:31 -0400; Peter, Why would one want to go through all the trouble with sweep tubes on that when 10 of them can be ran grid driven? The Galaxy amateur amp was a good example of this. I have built them using as; /archives//html/Amps/2006-08/msg00141.html (8,360 bytes)
4. Re: [Amps] Grid vs cathode driven (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Fri, 4 Aug 2006 18:19:21 +0200 (CEST); 10 of them can be ran grid driven? The Galaxy amateur amp was a good example of this. I have built them using as high as 10 in G-G in parallel. No neutralization was necessary, and they ran just fine; /archives//html/Amps/2006-08/msg00143.html (7,517 bytes)
5. Re: [Amps] Grid vs cathode driven (score: 1): Author: "Hsu" <Jbenson@sohu.com>; Date: Sat, 5 Aug 2006 06:42:36 +0800; Peter, I don't think so, the output impendence should so high,if I the voltage of plate=3kv, current=0.8A, the output inpendence should be 1500ohm.I just finshed the 8xGU-50's amplifier, it used a tr; /archives//html/Amps/2006-08/msg00151.html (7,669 bytes)
6. Re: [Amps] Grid vs cathode driven (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Fri, 04 Aug 2006 17:47:16 -0400; Peter, I agree with you, I just wouldn't go to the trouble of the particular circuit when one can do it an easier way if one wanted to use a sweep tube. However, as cheap as the surplus Russian tubes; /archives//html/Amps/2006-08/msg00157.html (8,801 bytes)

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