On Wed, 2012-05-09 at 12:02 -0400, gene heskett wrote: > Could=cold=microscopic crack in the solder? No a perfect looking joint had no contact to a pin, it only had conatct to the board. > I'm not familiar with that particular diode. However power rated switching > diodes that fast really stretch the limits of the technology, so I would > expect a higher failure rate for that compared to the 3 to 20 microsecond > recovery times of a more normal power diode. Indeed. the HER 303 with 50ns is the second fast diode we found. Thomas searched a lot and found another diode with 25ns or similar fast. He never has seen such a fast diode in another switching supply. I don't have any experiences. Yesterday I learned it and why just one diode is needed. > 3 kilovolts peak That's why I would like to live in a house with several stages of overvoltage protection. Those spark gap thingys from the DYI market or the same crap 100 * more expensive from the musical instrument dealer won't help if this happens. Even if the peak would be slow. > Light bulbs and small equipment fuses didn't last as long as they should > have for obvious reasons. :D And it easily could go through the computer too. Regards, Ralf _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
