On Feb 11, 2011, at 9:44 PM, Neville Michie wrote: > [...]For the minus 12v I used a ICL7662, these are rare, so a cmos gate > oscillator and diode pump negative generator could be used. I am told the > -12V is quite uncritical.[...]
Thanks for the thoughts. I'm thinking about redoing the power supplies for my T-bolts. So, your comments are helpful. May I ask where is the ICL7662 rare? Digikey has over 20K in various forms. I've also heard that the 5V supply is not noise critical. For your minimum power goal, I imagine that's why you used a switcher rather than lose up to 0.4A x 7V (2.8W) using a linear 5V regular off the +12V line. Kevin _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
