On Sun, Aug 26, 2012 at 3:46 AM, <[email protected]> wrote: > Having played with several solutions I found the best is a 12 V 1 A > switcher with the output voltage increased to 15 V, check the capacitors > and if > necessary replace with 25 V. I laid out a PC board that has a TC7662A > inverter followed by a 79L12. Also on the board is a 7812 followed by a > 7805. > Putting them in series gives me good thermal distribution. ....
One of the advantages of generating waste heat like that is that you can but the heat to good use. I build a temperature controlled fan. It is very simple a temperature sensor IC connects to an opamp that drives a power transistor that drives a 12V fan. As for the power supply. I used a filter that does not drop any volts and I can't see any RF on the DC using my old 365 Tek scope or by using a more sensitive RF power meter. Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
