linuxaudio.org

On Wed, 2012-05-09 at 12:02 -0400, gene heskett wrote:

quoted text
> 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

quoted text
> 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

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> have for obvious reasons.

:D
And it easily could go through the computer too.
Regards,

Ralf
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