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Total 15 documents matching your query.

1. [Amps] Plate coupling capacitor value (score: 1): Author: donroden@hiwaay.net; Date: Wed, 06 Sep 2017 21:51:52 -0500; Is there any hard or fast rule about how much capacitance to use between the tubes and the pi-net ? if 1000pf is good, is 2000pf .... 3000pf better ? Better to parallel several 500pf Centralabs or us; /archives//html/Amps/2017-09/msg00037.html (6,431 bytes)
2. [Amps] Plate coupling capacitor value (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Thu, 7 Sep 2017 09:34:45 -0700; Is there any hard or fast rule about how much capacitance to use between the tubes and the pi-net ? if 1000pf is good, is 2000pf .... 3000pf better ? Better to parallel several 500pf Centralabs or us; /archives//html/Amps/2017-09/msg00038.html (8,944 bytes)
3. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Thu, 7 Sep 2017 22:45:00 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: What's the Russian's name? Seriously, the Russian doorknob caps are hard to beat. They are made to military specs and are built like a tank. I use them i; /archives//html/Amps/2017-09/msg00039.html (7,425 bytes)
4. [Amps] Plate coupling capacitor value (score: 1): Author: John Lyles <jtml@losalamos.com>; Date: Thu, 7 Sep 2017 23:24:19 -0600; The capacitive reactance Xc of the plate DC blocking ppcapacitor should be chosen so that on the lowest frequency it has a low value of ohms. This way it doesn't have a significant RF voltage across; /archives//html/Amps/2017-09/msg00040.html (8,192 bytes)
5. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Chris Wilson <chris@chriswilson.tv>; Date: Fri, 8 Sep 2017 08:50:09 +0100; Hello John, What value blocking cap would you suggest for a 136kHz amp I am building using a single GS35B tube? Thanks. -- Best regards, Chris mailto:chris@chriswilson.tv ____________________________; /archives//html/Amps/2017-09/msg00041.html (8,276 bytes)
6. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Conrad PA5Y <g0ruz@g0ruz.com>; Date: Fri, 08 Sep 2017 12:13:24 +0100; The only catch at all is the threads are metric. No Bill, that is a bonus, when I order some HT57s I will have to remember to order some weird American brass screws to go with them! 73 Conrad PA5Y __; /archives//html/Amps/2017-09/msg00042.html (7,992 bytes)
7. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>; Date: Fri, 8 Sep 2017 14:44:31 +0300; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2017-09/msg00043.html (7,470 bytes)
8. Re: [Amps] Plate coupling capacitor value (score: 1): Author: donroden@hiwaay.net; Date: Fri, 08 Sep 2017 08:46:36 -0500; Vic, That was my thoughts exactly !! Don W4DNR _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps DonR ___________; /archives//html/Amps/2017-09/msg00044.html (8,176 bytes)
9. [Amps] Plate coupling capacitor value (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Fri, 8 Sep 2017 09:48:44 -0700; <Hello John, <What value blocking cap would you suggest for a 136kHz amp I am <building using a single GS35B tube? Thanks. XC is proportional to freq. At the max end, assuming 2000 pf on 1800 khz, I; /archives//html/Amps/2017-09/msg00045.html (9,104 bytes)
10. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Conrad PA5Y <g0ruz@g0ruz.com>; Date: Sat, 9 Sep 2017 00:56:00 +0200; Bloody hell I was attempting to pull your leg! Sheesh Conrad PA5Y --Original Message-- From: Conrad PA5Y Sent: Friday, September 08, 2017 6:13 AM To: Bill Turner Cc: Amps group Subject: Re: [Amps] Pl; /archives//html/Amps/2017-09/msg00046.html (9,012 bytes)
11. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Sat, 9 Sep 2017 01:47:23 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: OOPS, forgot you were not in the Stone Age. :-) 73, Bill W6WRT -- This email has been checked for viruses by Avast antivirus software. https://www.avast.; /archives//html/Amps/2017-09/msg00047.html (8,710 bytes)
12. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Manfred Mornhinweg <manfred@ludens.cl>; Date: Sat, 09 Sep 2017 16:53:24 +0000; Its only 1.275 amps, and that?s peak, not rms. Please be aware that on the highest bands typically much or most of the tuning capacitance is the tube's stray capacitance to ground. For this reason th; /archives//html/Amps/2017-09/msg00053.html (10,330 bytes)
13. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Sat, 9 Sep 2017 17:08:51 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: There is a better way to tune 10 and 12 meters despite high tube output and stray capacitance. A small coil in the anode lead will create an "L" network; /archives//html/Amps/2017-09/msg00054.html (8,950 bytes)
14. Re: [Amps] Plate coupling capacitor value (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sat, 9 Sep 2017 20:30:56 -0400; That goes back to the late 30's when SW broadcasting went above the 25, 22, and 19M bands and were still using older design tubes. The actual circuit was to tap the coil that was computed at a conven; /archives//html/Amps/2017-09/msg00055.html (10,969 bytes)
15. Re: [Amps] Plate coupling capacitor value (score: 1): Author: Manfred Mornhinweg <manfred@ludens.cl>; Date: Mon, 11 Sep 2017 17:50:19 +0000; Bill, Carl, There is a better way to tune 10 and 12 meters despite high tube output and stray capacitance. A small coil in the anode lead will create an "L" network which reduces the plate impedance; /archives//html/Amps/2017-09/msg00056.html (9,931 bytes)

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