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1. [Amps] Powering 400w mobile amplifier... (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Tue Jul 29 13:31:53 2003; Gerry... Definitely run two wires to the battery. Also ground the Amp solidly to the car frame at it's mount point. Also fuse _both_ power wires near the battery. Several scenarios to worry about. 1.; /archives//html/Amps/2003-07/msg00142.html (10,708 bytes)
2. [Amps] Powering 400w mobile amplifier... (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Tue Jul 29 23:01:59 2003; Bill objected to my advice but didn't say what was bad about the multiple ground approach. And his suggestion to use RF current carrying capacitors at the 400W power level is questionable. All mobile; /archives//html/Amps/2003-07/msg00158.html (11,999 bytes)
3. [Amps] 222 MHZ 8877 Amp Design Needed (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Sun May 25 09:57:41 2003; Steven... Here's an idea.... Build the amp with any style you want, but also build an antenna tuner like box containing a 50 Ohm to 50 Ohm PiNet. Put the little tuner box on the operating table and r; /archives//html/Amps/2003-05/msg00193.html (9,097 bytes)
4. [Amps] (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Sat Apr 19 09:30:09 2003; Has anyone used a coleman lantirn pyrex envelope for the cooling chimney for a 4-1000? Did it fit? Did it work? jeff, wa1hco; /archives//html/Amps/2003-04/msg00185.html (6,369 bytes)
5. [Amps] MRF150 based 1500 watt amp design/cost (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Thu Mar 6 08:45:04 2003; I like the idea of an external tuner with some harmonic rejection. It sounds like the high power PA's need to see a broadband 50 Ohm match. We might consider a weak diplexor that transfers power on t; /archives//html/Amps/2003-03/msg00254.html (10,357 bytes)
6. [Amps] Capacitance Amount Formula (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Sun Feb 9 12:24:25 2003; This is a ripple calculation based on the basic capacitor formula I = C * dV / dT Let's say you want 3% ripple at 4 KV...that's 120V. The capacitor charges on each line peak, twice in each 60 Hz cycl; /archives//html/Amps/2003-02/msg00203.html (8,838 bytes)
7. [Amps] Capacitance Amount Formula (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Tue Feb 11 01:00:15 2003; We can really flog things to death here, can't we? Yes, it depends on line frequency. If you're designing a three phase amp and need to ask about filter caps, you're in way too much trouble. (besides; /archives//html/Amps/2003-02/msg00240.html (7,960 bytes)
8. [Amps] GS-35B (score: 200): Author: wa1hco at adelphia.net (jeff millar); Date: Sun Aug 17 09:06:22 2003; I've had good luck with pavel_pop on ebay. http://www.stores.ebay.com/id=56152411; /archives//html/Amps/2002-09/msg00384.html (7,026 bytes)

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