On Mon, 02 Mar 2009 18:58:58 +0000, Brian Alsop wrote: >I'm wondering about a UPS supply that's attached to the computer. Do >they only kick in when power goes out
That is nearly always how they work. BUT -- if the transformer is energized, there will be a field. So it depends on how that particular device works. >Have the opposite problem with earphones clean but line out polluted by >third and other odd harmonics. That's produced in the line out transformer because there's 600 ohms in series with it and the output driver. The mod fixes that by reducing the resistors to a much smaller value (50 ohms, I think). 73, Jim Brown K9YC ______________________________________________________________ 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
