On Apr 8, 2009, at 2:22 PM, Jack Smith wrote: > The "Cliff's Notes" version is that the turn-on (note I said turn-on, > not turn-off) time of a 1N4007 diode is sufficiently fast to be a very > effective relay snubber.
Interesting! It's always true that experiment trumps theory. Curious, though, that you would promote using a 1N4007 as a snubber for a 12 volt relay. It would make more sense to use a 1N4001, which has virtually identical characteristics as the 1N4007, except for the reverse breakdown voltage. The 1N4001, with a reverse breakdown of 50 volts, it will withstand the relay energizing voltage of 12 volts. The 1N4001 can be purchased for about a penny each in bulk. The 1N4007 is about four times more expensive. That's a three cent difference. And, you know, hams are cheap. <grin> Bill Coleman, AA4LR, PP-ASEL Mail: aa...@arrl.net Web: http://boringhamradiopart.blogspot.com Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
