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21. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Thu, 31 Aug 2000 10:19:24 +0200; The forward polarized diodes used are probably unsuited for this application or with some short term abnormal condition (i.e. lousy antenna connector, bad soldering somewere, parasitics, etc.) Change; /archives//html/Amps/2000-08/msg00566.html (8,582 bytes)
22. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: 2@vc.net (measures); Date: Thu, 31 Aug 2000 03:54:57 -0700; 10w zener diodes typically short when exposed to high surge currents. 3A diodes can handle 200a-peaks. .... - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.; /archives//html/Amps/2000-08/msg00567.html (8,199 bytes)
23. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 31 Aug 2000 07:57:43 -0400; I've never seen his kit. I can't believe all the people making money selling things that aren't needed! The flash and bang with virtual certainty was not caused by a parasitic. You've been duped by; /archives//html/Amps/2000-08/msg00570.html (12,919 bytes)
24. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Thu, 31 Aug 2000 15:15:18 +0200; True as a general issue, but in practice all depends by which diodes and what's the peak duration/current involved. Evidently, 1N4005 are not enough compliant with the general assumption if compared; /archives//html/Amps/2000-08/msg00574.html (9,551 bytes)
25. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: 2@vc.net (measures); Date: Thu, 31 Aug 2000 11:13:46 -0700; The 1N4005s protected nothing, Mauri - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests:; /archives//html/Amps/2000-08/msg00581.html (8,064 bytes)
26. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: 2@vc.net (measures); Date: Thu, 31 Aug 2000 11:13:44 -0700; It doesn't. The big-bang arc is from the B+ circuitry to gnd. The arc leaves no arc marks inside a shorted tube. The tube is not in series with the B+ to gnd arc path. Why don't grid/filament shorte; /archives//html/Amps/2000-08/msg00582.html (14,144 bytes)
27. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Thu, 31 Aug 2000 20:32:44 +0200; But someone told a number 30 wire 1/2 inch long fuse didn't blow up ...... Jokes apart, there's another issue often neglected that's what happens to a GG tube when HV disappear and drive power stay o; /archives//html/Amps/2000-08/msg00583.html (8,738 bytes)
28. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 31 Aug 2000 20:52:01 -0400; Most tube faults are gas related. Any arc from anode to grid or anode will cause a big bang. It does not have to be from the HV circuitry to the chassis EXTERNAL to the tube. Then the GG amplifier mi; /archives//html/Amps/2000-08/msg00587.html (10,973 bytes)
29. [AMPS] Problem with SB-220 Bias Diodes (score: 1): Author: 2@vc.net (measures); Date: Thu, 31 Aug 2000 20:46:34 -0700; Roughly how many 8877s have you autopsied? 3-500Zs? ? [chortle] Welcome to the world of Charles Thomas Rauch, Jun. later - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://ww; /archives//html/Amps/2000-08/msg00590.html (8,041 bytes)

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