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Total 9 documents matching your query.

1. [Amps] LK-500 problem (score: 1): Author: Jeff Strailey <liveccam@yahoo.com>; Date: Sun, 28 May 2006 20:20:51 -0700 (PDT); I recently obtained an Amp Supply LK-500ZB. The first order of business was the conversion to 120 volt operation. When the amp is powered plate voltage as measured by the internal meter is about 1500; /archives//html/Amps/2006-05/msg00464.html (7,148 bytes)
2. Re: [Amps] LK-500 problem (score: 1): Author: Alek Petkovic <vk6apk@eon.net.au>; Date: Mon, 29 May 2006 18:08:16 +0800; My first guess would be the hv metering resistors. I'm not familiar with the circuit but I would expect that it is a voltage divider type setup with several high value resistors in series with a lowe; /archives//html/Amps/2006-05/msg00474.html (8,529 bytes)
3. Re: [Amps] LK-500 problem (score: 1): Author: Gudguyham@aol.com; Date: Mon, 29 May 2006 06:49:27 EDT; It is doubtful that the HV meter is reading so incorrectly. It seems that the reading is just about half what it should be which may indicate that you may have improperly converted the amp to running; /archives//html/Amps/2006-05/msg00479.html (8,658 bytes)
4. Re: [Amps] LK-500 problem (score: 1): Author: jkearman@att.net (Jim Kearman); Date: Mon, 29 May 2006 11:29:16 +0000; I once bought a used SB-220 that had been "converted" to a full-wave bridge rectifier instead of the full-wave voltage doubler supplied by Heathkit. NOTE: I sure would try to run that amp off 240 V,; /archives//html/Amps/2006-05/msg00481.html (7,588 bytes)
5. Re: [Amps] LK-500 problem (score: 1): Author: Bill Coleman <aa4lr@arrl.net>; Date: Mon, 29 May 2006 08:04:41 -0400; I bought an AL-80A last year from an estate and had a similar problem - HV read about 2200 volts instead of nearly 3000. The advice I received was that the HV power supply is pretty deadsimple, and i; /archives//html/Amps/2006-05/msg00485.html (8,106 bytes)
6. [Amps] LK-500 Problem (score: 1): Author: edk0kl@centurytel.net; Date: Mon, 29 May 2006 10:27:07 -0500 (CDT); Sounds to me like there is something not connected properly in the 220 conversion. Remember this particular amp has 2 primaries in the transformers, 3 leads (plus a ground). Lead "A" with the single; /archives//html/Amps/2006-05/msg00487.html (7,974 bytes)
7. [Amps] LK-500 Problem (score: 1): Author: edk0kl@centurytel.net; Date: Mon, 29 May 2006 10:38:47 -0500 (CDT); Boy did I read that one wrong! Have you connected both primaries to the input voltage. Again Ohm meter ... My LK-500B did not have step start so I added one using resistors in each lead and a double; /archives//html/Amps/2006-05/msg00488.html (7,632 bytes)
8. Re: [Amps] LK-500 Problem (score: 1): Author: Gudguyham@aol.com; Date: Mon, 29 May 2006 11:41:48 EDT; Remember this particular amp has 2 primaries in the transformers, 3 leads (plus a ground). NO.....I don't think so......there are 4 wires. DUAL primaries 2 wires each primary, that's four. ABCD for 2; /archives//html/Amps/2006-05/msg00489.html (7,533 bytes)
9. Re: [Amps] LK-500 problem (score: 1): Author: R L Measures <r@somis.org>; Date: Mon, 29 May 2006 13:15:07 -0700; On May 29, 2006, at 4:29 AM, Jim Kearman wrote: From: Jeff Strailey <liveccam@yahoo.com> I recently obtained an Amp Supply LK-500ZB. The first order of business was the conversion to 120 volt operati; /archives//html/Amps/2006-05/msg00493.html (9,063 bytes)

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