Probably inrush current charging the capacitor(s), I have heard it in other supplies (astron). You could shock mount the transformer maybe if it bothers you too much! 73/72 - Mike WA8BXN -------Original Message-------
I use a Pyramid power supply. PS35G to be exact. Sometimes when I turn it on it makes a thudding sound. WT5Y _______________________________________________ _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
