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1. [AMPS] Re: SB220 problem (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 10 Nov 1999 08:03:12 -0700; Install glitch diodes to protect meters. Remove +110vdc from relay's bias contacts to prevent shorted tube from destroying fil. transformer. . Install glitch R in hv positive lead. If your 0.82 ohm; /archives//html/Amps/1999-11/msg00258.html (8,466 bytes)
2. SV: [AMPS] Re: SB220 problem (score: 1): Author: sm5ki@algonet.se (sm5ki); Date: Wed, 10 Nov 1999 21:04:59 +0100; Hej! Your diode in the + 110 volts relay supply is probably shorted. Do not forget to replace the electrolytic condenser in that supply if so. Is it not strange that those SB 220s still run years aft; /archives//html/Amps/1999-11/msg00262.html (9,988 bytes)
3. SV: [AMPS] Re: SB220 problem (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 10 Nov 1999 12:21:31 -0700; The bandswitch used in my SB-220 has a measured breakdown potential of to deal with the roughly 10A of RF circulating current, Heath used double contacts plus forced air cooling on the switch. I use; /archives//html/Amps/1999-11/msg00263.html (8,724 bytes)

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