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Total 9 documents matching your query.

1. [Amps] Astron RS20A primary resistance (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Sun, 7 May 2006 22:59:19 -0400; I need to know what the primary resistance is of the Astron RS20A transformer. I would like to know the resistance of a 220 volt transformer and a 120 volt transformer. Maybe someone has a 220 volt R; /archives//html/Amps/2006-05/msg00037.html (6,884 bytes)
2. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 08 May 2006 01:10:16 -0400; Gary, 1/2 voltage can be caused by a rectifier, main filter cap, or the voltage regulator. I'd check the voltage regulator first off to see if I had high enough DC voltage from the rectifiers going i; /archives//html/Amps/2006-05/msg00038.html (8,453 bytes)
3. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Mon, 8 May 2006 10:23:43 -0400; The low voltage is right out of the transformer secondary. It is about 1/2 of what it should be. I used to be an astron distributor. I sold about a dozen of these supplies to a customer and he sent t; /archives//html/Amps/2006-05/msg00039.html (10,027 bytes)
4. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 08 May 2006 11:01:25 -0400; Gary, Ok, I thought it was one that was working at one time and had quit. It very well could be that Astron screwed up at the factory and used a 220 Vac transformer in place of one for 110 Vac. Or th; /archives//html/Amps/2006-05/msg00040.html (12,039 bytes)
5. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Mon, 08 May 2006 08:11:18 -0700; I have a 240V Astron RS70 and the transformer has a center-tapped primary. The tap is used to operate the 120V fans! However, there is no way to rewire it for 120V; it's not got the usual dual windin; /archives//html/Amps/2006-05/msg00041.html (7,270 bytes)
6. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: "Dan Hearn" <dhearn@wwnw.net>; Date: Mon, 8 May 2006 11:53:01 -0700; Gary, I have a VS20M Astron here which I suspect has the same xfmr in it. I measure the primary R as 1 ohm with my Tripplet 60NA. That seems awfully low so I measured it with my Fluke 77 and get 1.1; /archives//html/Amps/2006-05/msg00042.html (8,463 bytes)
7. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Mon, 8 May 2006 16:24:44 -0400; Thanks Dan, I have a VS35M also and it shows a resistance of around an ohm on my Fluke 77 meter so that sounds in the ball park. I wasn't sure if the transformer in the 20 amp supply would be a lot h; /archives//html/Amps/2006-05/msg00044.html (11,296 bytes)
8. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: TexasRF@aol.com; Date: Mon, 8 May 2006 16:30:48 EDT; Since the primary current is half and the number of turns are two times, the resistance could be four times for 220v vs. 110vac. Perhaps your original 6 ohm reading is right on the money. 73, Gerald; /archives//html/Amps/2006-05/msg00045.html (11,308 bytes)
9. Re: [Amps] Astron RS20A primary resistance (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 08 May 2006 16:46:04 -0400; Right, Where the current is 1/2 what it is on 120 Vac, they would use a smaller wire size and the resistance will be higher. If they used the same wire size, then you could multiply by 2, but they do; /archives//html/Amps/2006-05/msg00046.html (13,446 bytes)

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