[Amps] Step-start; improved circuit.

k7fm k7fm at teleport.com
Sat Mar 7 07:02:54 PST 2009


As a member of the KIRSS fan club (Keep it really simple stupid), I have 
never had a problem with the contacts on a simple step-start circuit.  All 
you need is a cycle or two delay and if the delay is too long, that is when 
the slow actuation time can pit the contacts.

I like Carl's method.  Use a big relay and make it fast.

I have an amp that has all sorts of protective circuits in it.  It is full 
of every feature I ever wanted in an amp.  It is also the only amp that has 
never been completed.  One of the problems is that while sitting unfinished, 
the panel got scratched.  Now, in addition to finishing the electrical work, 
I have to remove the panel, strip it and repaint.

In the meantime, all my other amps, will less protective circuits, just keep 
working and working.

73,  Colin  K7FM 



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