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1. Topband: Vacuum relay powering #2 (score: 1): Author: "Dr. Wolff Ostwald" <df2py@t-online.de>; Date: 31 Mar 2007 15:24 GMT; Hi reflectees ! I guess the relay issue is of common interest here. Even if a surface seems to be hard and rigid, the common contact surface can be enhanced by extra pressure, with an accurate Ohm-me; /archives//html/Topband/2007-03/msg00188.html (7,217 bytes)
2. Re: Topband: Vacuum relay powering #2 (score: 1): Author: topband-bounces@contesting.com (by way of Bill Tippett<btippett@alum.mit.edu>); Date: Sun, 01 Apr 2007 11:30:21 +0000; A possible argument in favor of Wolff's position: I work for Agilent (used to be HP) and they used a LOT of reed relays. They come in form A (SPST, NO), form B (SPST, NC) and form C (SPDT). The form; /archives//html/Topband/2007-04/msg00000.html (7,805 bytes)
3. Re: Topband: Vacuum relay powering #2 (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Sun, 1 Apr 2007 09:21:22 -0400; After some thought and a look at this last night, I'm going to strongly disagree with the idea that reduced holding voltage reduces current rating in most, if not all, relays. My reason does not con; /archives//html/Topband/2007-04/msg00002.html (14,515 bytes)
4. Re: Topband: Vacuum relay powering #2 (score: 1): Author: "Harold Smith" <w0rihps@sbcglobal.net>; Date: Sun, 1 Apr 2007 10:45:21 -0500; I must agree with Wolf. If some one is using switched 12volts and want to use vacuum relays, It is very easy. Pickup a Radio Shack 12 volt 1 amp power supply and put in series with the common lead o; /archives//html/Topband/2007-04/msg00003.html (8,204 bytes)
5. Re: Topband: Vacuum relay powering #2 (score: 1): Author: "Paul Hudson" <paul@mcradio.com>; Date: Sun, 1 Apr 2007 14:54:07 -0400; Tom While increased voltage on the relay coil does not improve the current capacity of the contacts, it does improve the pull-in time. In the 77DX and perhaps other amps, Alpha momentarily put 50 vol; /archives//html/Topband/2007-04/msg00005.html (8,888 bytes)
6. Re: Topband: Vacuum relay powering #2 (score: 1): Author: topband-bounces@contesting.com (by way of Bill Tippett<btippett@alum.mit.edu>); Date: Sun, 01 Apr 2007 18:58:06 +0000; Tom, I enjoyed the read. Please post that or something similar on your page if you can. I am about to purchase relays for a project and I would like to use 12 VDC relays. Reason, my ham radio corner; /archives//html/Topband/2007-04/msg00006.html (8,819 bytes)

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