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References: [ +from:johna8119-amps@yahoo.com: 6 ]

Total 6 documents matching your query.

1. [Amps] HV checking (score: 1)
Author: <johna8119-amps@yahoo.com>
Date: Fri, 4 Nov 2005 13:42:00 -0800 (PST)
Is there a safe way to check the HV circuit in an SB-220? I'm getting intermittent readings on the meter, but the meter and the switch check out ok. My digital voltmeters have a max of 1 kv. I can pu
/archives//html/Amps/2005-11/msg00061.html (6,626 bytes)

2. [Amps] SB-220 load capacitor question (score: 1)
Author: <johna8119-amps@yahoo.com>
Date: Wed, 9 Nov 2005 18:09:46 -0800 (PST)
I should probably be ashamed to ask this. I have this SB-220 that I have been unmodifying, and I have run into a situation that I am wondering about. When I tune this rig up, with excitor power anywh
/archives//html/Amps/2005-11/msg00124.html (7,152 bytes)

3. Re: [Amps] SB-220 load capacitor question (score: 1)
Author: <johna8119-amps@yahoo.com>
Date: Thu, 10 Nov 2005 10:15:25 -0800 (PST)
I had previously checked the dummy load with DMM (47.8 ohms) and with a MFJ 239 SWR meter (50 ohms and 1:1 swr). There is no change with switching the bandswitch. I have polished the contacts with a
/archives//html/Amps/2005-11/msg00126.html (9,717 bytes)

4. Re: [Amps] Amps Digest, Vol 35, Issue 20 (score: 1)
Author: <johna8119-amps@yahoo.com>
Date: Thu, 10 Nov 2005 18:54:02 -0800 (PST)
The tubes glow equally when the plate amperage is high enough. No shorts are evident. HV is good. A previous owner changed the relay and shielded it. He moved some circuitry from its original positi
/archives//html/Amps/2005-11/msg00135.html (9,887 bytes)

5. Re: [Amps] 220V wiring: Was Question about safety ground connection (score: 1)
Author: <johna8119-amps@yahoo.com>
Date: Thu, 17 Nov 2005 09:44:43 -0800 (PST)
The discussion about codes reminds me of what I have faced, working in hospitals for the past 35 years. Every three years, the Joint Commission on Accreditation of Healthcare Organizations (JCAHO) su
/archives//html/Amps/2005-11/msg00274.html (10,699 bytes)

6. [Amps] SB-220 Unmodification (score: 1)
Author: <johna8119-amps@yahoo.com>
Date: Fri, 10 Mar 2006 13:34:03 -0800 (PST)
Some of you may recall that last summer I posted some questions about an extensively modified Heathkit SB-220 that would not work. I put some pictures, etc. on a web page. Several of the helpful guys
/archives//html/Amps/2006-03/msg00253.html (6,930 bytes)

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