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21. [AMPS] Power Supply Diodes (score: 1): Author: w7iuv@nis4u.com (Larry Molitor); Date: Fri, 04 Feb 2000 00:24:26 +0000; Phil, The Digikey catalog has been opened to that very page for three days now. I'm just waiting for a free moment to make up an order. Larry - W7IUV -- FAQ on WWW: http://www.contesting.com/ampsfaq.; /archives//html/Amps/2000-02/msg00058.html (9,414 bytes)
22. [AMPS] Power Supply Diodes (score: 1): Author: w7iuv@nis4u.com (Larry Molitor); Date: Fri, 04 Feb 2000 00:30:27 +0000; Ah, the joys of modular amplifiers! It only took two minutes to jack in the "old" supply and check out all the RF and control stuff. All as it should be. Each component in the "new" supply was indivi; /archives//html/Amps/2000-02/msg00059.html (10,343 bytes)
23. [AMPS] Power Supply Diodes (score: 1): Author: w7iuv@nis4u.com (Larry Molitor); Date: Fri, 04 Feb 2000 00:21:40 +0000; As per my old Motorola Silicon Rectifier Manual, Max NON-REPETITIVE surge current (one cycle) is 200 amps Max NON-REPETITIVE surge current (100 cycles) is 50 amps From the same manual, charts from O.; /archives//html/Amps/2000-02/msg00060.html (10,376 bytes)
24. [AMPS] Power Supply Diodes (score: 1): Author: w7iuv@nis4u.com (Larry Molitor); Date: Fri, 04 Feb 2000 00:40:27 +0000; The white paint says "RT", any guess on that one? At the time of failure, the calculated safety factor was 44.5%. I guess that's a bit marginal. Still it should not have quit. I have the parts in a b; /archives//html/Amps/2000-02/msg00061.html (9,121 bytes)
25. [AMPS] Power Supply Diodes (score: 1): Author: measures@vcnet.com (measures); Date: Thu, 3 Feb 2000 19:01:53 -0700; beats me. sgreed cheers - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@; /archives//html/Amps/2000-02/msg00064.html (8,884 bytes)
26. [AMPS] Power Supply Diodes (score: 1): Author: itr@nanoteq.co.za (Ian Roberts); Date: Fri, 04 Feb 2000 07:27:03 +0200; Periods are not rated in Siemens... -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@co; /archives//html/Amps/2000-02/msg00068.html (8,953 bytes)
27. [AMPS] Power Supply Diodes (score: 1): Author: rfamps@ic24.net (Steve Thompson); Date: Fri, 4 Feb 2000 15:32:34 -0800; Can't claim practical experience, but I did run a Spice simulation. I assumed the primary R effect doubled the secondary Rs, and I assumed about 4.5kV dc (didn't keep a copy of your original post).; /archives//html/Amps/2000-02/msg00069.html (8,838 bytes)
28. [AMPS] Power Supply Diodes (score: 1): Author: w7iuv@nis4u.com (Larry Molitor); Date: Fri, 04 Feb 2000 22:33:52 +0000; Steve, thanks for the Spice run. Very interesting. My actual output voltage at key down was 3100, key up (ZSAC) was about 3400. Using the graphs, I had estimated about 2.9 amps RMS current. But what; /archives//html/Amps/2000-02/msg00072.html (9,263 bytes)
29. [AMPS] Power Supply Diodes (score: 1): Author: rfamps@ic24.net (Steve Thompson); Date: Mon, 7 Feb 2000 10:44:10 -0800; 40ms In general, over react. The problem can be quite subtle - The basic, international ageed spec for a rectifier might have very few parameters, say reverse breakdown voltage, forward drop at some; /archives//html/Amps/2000-02/msg00086.html (10,148 bytes)
30. [AMPS] Power Supply Diodes (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Mon, 7 Feb 2000 10:52:04 -0000; Are we reaching some agreement that my suspicion about peak currents being the problem was correct? I've always tended to assume (like, it seems many others) that a 3 amp diode is good for 3 amps. No; /archives//html/Amps/2000-02/msg00087.html (8,388 bytes)
31. [AMPS] Power Supply Diodes (score: 1): Author: w7iuv@nis4u.com (Larry Molitor); Date: Tue, 08 Feb 2000 00:18:12 +0000; Amen, Peter! Since I have never before been able to make a HV, cap filter, supply work to my satisfaction, I am going to make a real effort on this one. Since I asked the original question, there hav; /archives//html/Amps/2000-02/msg00100.html (10,323 bytes)

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