I used the K3 to switch my SB-220 backup amp (+130 VDC) a couple months ago. It worked fine through an entire contest. The K3 spec is +200 VDC at 5 amps. I did put a reverse diode across the relay line to prevent the possibility of negative inductive kickback. Actually, I put the diode right at the K3 via an RCA wye with the diode soldered across one leg of the wye. It was an emergency deal, but it worked fb.
Dave Hachadorian, K6LL Yuma, Arizona -----Original Message----- From: [email protected] Sent: Thursday, March 15, 2012 10:12 AM To: [email protected] Subject: [Elecraft] switching a heath amp Gang the heath series of amps use bial voltage to switch the thing from T/R and That amounts to 130 +- volts would the K3 be Ok switching this or should I look to add an additional relay and switch that Bob K3DJC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
