Or you can do it by scrounging. :) At work, we had 4 Furman MP-15 remote switched power relay outlets. We obsoleted them when we did a redesign of our attraction, so, as usual, I had an application for them in mind, and rescued them from the dumpster in fine Ham fashion.
These are 15 amp remote switched dual outlet power boxes used to sequence high power audio amplifiers to protect the mains from inrush trips. Its a simple matter to take the output of my 12v power supply and route it to the power sensor on the MP-15. When the main power supply is switched on, the 12v activates the power to both the outlets via a relay. for accessory power, like my MicroKeyers, speakers and the like, I found a very small 15 amp switching 12v supply (at CompUSA - Labeled ULTRA PS-15 - $19.95) in a rather "sexy" back plastic case with foot stands. It has 8 12v outlets using barrel sockets. It comes with 8 variable length barrel to barrel cables, too. It is amazingly quiet from switching noise, I cant find any RF from it. This little item is plugged into the MP-15 and replaces all the wall warts in my station. When I power my main 12v Astron PS, it triggers the MP-15, which turns everything in the shack on except the linear and the K3 at once. The only negative are the incredibly bright purple LED's on each of the Ultra's active 12v outlets... A short length of elecrtrical tape fixes that... The MP-15 is quite expensive new, but they can be found on Ebay. But now I have three spares, just waiting for future applications :) I can add another one on the second outlet to automatically turn on my amplifier... Maybe someday when I get a round to-it... :) -lu- ---------------------- Message: 8 Date: Tue, 03 May 2011 21:54:26 -0700 From: Alan Bloom <n...@sonic.net> Subject: Re: [Elecraft] Pleased...P3 No. 1327... To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Message-ID: <1304484866.1445.26.camel@ulinux-desktop> Content-Type: text/plain; charset="UTF-8" I'm surprised that RIGrunner or MFJ or somebody doesn't make a 12V distribution system with a remote on/off control that could be connected to the K3 switched 12V output. Sounds like an opportunity: Someone on the list should market one. Or at least design one and write a QST article. Al N1AL ______________________________________________________________ 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
