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181. Re: [Amps] AL80A question (score: 1)
Author: R.Measures <r@somis.org>
Date: Fri, 5 Dec 2003 07:17:36 -0800
** good news ** Start at the input side of the on-off switch, move along toward the HV transformer primary, and find out where the mains-V disappears. If you get the amp to start blowing fuses, to s
/archives//html/Amps/2003-12/msg00071.html (7,432 bytes)

182. Re: [Amps] AL80A question (score: 1)
Author: R.Measures <r@somis.org>
Date: Fri, 5 Dec 2003 01:43:11 -0800
** The first goal is to get HV with the tube removed. Before you get too far along, the AL-80 needs a glitch resistor in the HV+ circuit 10 -20 ohms, 10 - 12 watt glass-coated should do the job. Addi
/archives//html/Amps/2003-12/msg00072.html (7,950 bytes)

183. Re: [Amps] RE 220 V (score: 1)
Author: R.Measures <r@somis.org>
Date: Fri, 5 Dec 2003 18:25:00 -0800
Neutral does not go to the chassis when a 220 is wired for 120V, but wired for 240v it does _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contest
/archives//html/Amps/2003-12/msg00079.html (6,886 bytes)

184. RE: [Amps] 220V service for amplifier (score: 1)
Author: R.Measures <r@somis.org>
Date: Fri, 5 Dec 2003 18:24:59 -0800
** please describe your antenna and feedline. Tnx _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2003-12/msg00080.html (8,995 bytes)

185. Re: [Amps] Re: SB-220 on 220V (score: 1)
Author: R.Measures <r@somis.org>
Date: Sat, 6 Dec 2003 06:48:49 -0800
** I connect the Neutral on the SB-220's 240v 3-wire line cord to the chassis. Normally, no current flows in this wire, but the Neutral-chassis connection does serve to prevent much voltage from app
/archives//html/Amps/2003-12/msg00089.html (8,009 bytes)

186. Re: [Amps] RE 220 V (score: 1)
Author: R.Measures <r@somis.org>
Date: Sat, 6 Dec 2003 14:01:01 -0800
** It's true on my SB-220. When wired for 240V, the third wire (green) goes to the neutral on the 240v 3-conductor plug and the other end of this wire goes to chassis. On a 3-conductor 240v circuit,
/archives//html/Amps/2003-12/msg00090.html (9,258 bytes)

187. Re: [Amps] RE 220 V (score: 1)
Author: R.Measures <r@somis.org>
Date: Sat, 6 Dec 2003 22:18:17 -0800
Bill -- ** What I am telling you is that green is not a sacred color to this radio operator. I Have a 3-wire 240v outlet in the radio-room. The Neutral wire on this outlet connects back to the 240v
/archives//html/Amps/2003-12/msg00091.html (11,084 bytes)

188. Re: [Amps] Re: SB-220 on 220V (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 00:02:20 -0800
** If there is no connection between the two. what is the potential difference between the neutral and ground? _______________________________________________ Amps mailing list Amps@contesting.com h
/archives//html/Amps/2003-12/msg00107.html (7,437 bytes)

189. Re: [Amps] SB-200 Output Power Too High? (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 00:02:21 -0800
** The emissive limit of two 572B for linear applications is c. 440mA. Drive requirement for linear is c. 35w per cathode. Before believing Any wattmeter, measure R with an digital ohmmeter. The mos
/archives//html/Amps/2003-12/msg00108.html (8,444 bytes)

190. Re: [Amps] series directly heated cathode out to 4 tubes (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 00:02:21 -0800
** Why not go for it? A 922 has no detectable hum, so it just might fly, Skipp. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mail
/archives//html/Amps/2003-12/msg00109.html (7,784 bytes)

191. Re: [Amps] unun (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 00:02:22 -0800
** The sticky wicket is that the input Z of a g-g amp is not even close to being symmetrical. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contes
/archives//html/Amps/2003-12/msg00110.html (7,440 bytes)

192. [Amps] Sep/Oct, 2003 QEX article on Parasites (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 00:33:25 -0800
- I recently received a copy of this article* from NS1B, James McElroy. Tnx, Jim. * "CAD Analysis of the Grounded-Grid Amplifier Shows a Better Method for Stabilization" by Ralph Cumrine, N&Oslash;KC
/archives//html/Amps/2003-12/msg00111.html (6,864 bytes)

193. [Amps] Re: Neutral and ground is in how you use them (was SB-220 on220V) (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 01:48:23 -0800
* A potential rub would exist if I did not (simply because green is the wrong color according to the NEC experts) make sure the chassis of the SB-220 was connected back to the ground/neural terminal
/archives//html/Amps/2003-12/msg00112.html (13,906 bytes)

194. Re: [Amps] RE 220 V (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 07:45:42 -0800
** I concur. matter, if you care ** As I recall, the wire is 12-gauge bare Cu. It is embedded at the center of 12-3 blk/wht color-coded romex. According to the latest code, this cable should probabl
/archives//html/Amps/2003-12/msg00113.html (17,773 bytes)

195. Re: [Amps] unun (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 07:59:14 -0800
** Without enough signal to produce grid-current, the input Z is sure to higher than with normal grid-current flowing. Murphy was right: "Almost nothing is as simple as it first looks". _____________
/archives//html/Amps/2003-12/msg00114.html (8,099 bytes)

196. Re: [Amps] unun (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 07:59:13 -0800
** Dennis -- Example: one 3-500Z in g-g config: The input Z varies continuously from c. 30-ohms to virtually an open circuit during the 360&ordm; of the input sinewave. Transformers are not happy cam
/archives//html/Amps/2003-12/msg00115.html (7,722 bytes)

197. [Amps] Re: Neutral and ground is in how you use them (was SB-220 on220V) (score: 1)
Author: R.Measures <r@somis.org>
Date: Sun, 7 Dec 2003 14:53:28 -0800
** And if the short is from the primary to the xfmr-case/chassis. ** The same wires furnish power to 4, 120V outlets. ** I do not use a 4-wire system for 240v, 50A outlets. However, a helicopter tai
/archives//html/Amps/2003-12/msg00116.html (28,522 bytes)

198. Re: [Amps] Re: Neutral and ground is in how you use them (was SB-220on 220V) (score: 1)
Author: R.Measures <r@somis.org>
Date: Mon, 8 Dec 2003 03:41:18 -0800
** Providing this person was standing in water. ** If the screws are not tightened on the ground and neutral wires, you would. ** I identify them by size. #6 is ground/neutral and the #4s are mains.
/archives//html/Amps/2003-12/msg00126.html (13,362 bytes)

199. Re: [Amps] Re: Neutral and ground is in how you use them (was SB-220on 220V) (score: 1)
Author: R.Measures <r@somis.org>
Date: Mon, 8 Dec 2003 10:14:11 -0800
** Putting the radio in the bedroom is probably not a good idea, Gary. ** In a new box with a separate ground bus and a separate neutral bus, the two busses would have to be bus-wired together to be
/archives//html/Amps/2003-12/msg00135.html (8,662 bytes)

200. Re: [Amps] Maxwell oil filled capacitors? (score: 1)
Author: R.Measures <r@somis.org>
Date: Tue, 9 Dec 2003 04:42:34 -0800
Defibrillator (and flash service) capacitors save space by using thinner-foil. They can do this because they are not subject to high average ripple current -- i.e., ESR is not a consideration in the
/archives//html/Amps/2003-12/msg00140.html (8,305 bytes)

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