I was wrong about the MICOR Power Supply number. I went by the number of the other supply shown in the MICOR UHF Repeater manual, instead of actually going out across the snow into the COLD garage to visibly look at the Supply. Its number is TPN1095A (also has a TLN4731A number on it). It's quite different than the TPN1110B with its big transformer and capacitor. We always referred to the TPN1095A as "The Switching Supply", but we might have been wrong all along!
LJ -----Original Message----- >From: Eric Lemmon <[EMAIL PROTECTED]> >Sent: Jan 14, 2007 3:44 PM >To: Repeater-Builder@yahoogroups.com >Subject: RE: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc. > >Jeff, > >That sounds like a plan! And I agree with your and Ken's comment about the >TPN1151A being a linear supply- I checked a MICOR manual to be sure. I seem >to recall that there was a MICOR switch-mode supply, but I can't remember >which Compa-Stations had it installed, or what model number it bore. Old >age is affecting my memory, I guess... > >73, Eric Lemmon WB6FLY > > >-----Original Message----- >From: Repeater-Builder@yahoogroups.com >[mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo >Sent: Sunday, January 14, 2007 3:21 PM >To: Repeater-Builder@yahoogroups.com >Subject: RE: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc. > >> You have a golden opportunity to provide an extremely >> valuable service to the radio community! If you can obtain >> the use of a wattmeter, you can make a comparison between the >> two power supplies. One such meter is the "KILL A WATT" >> meter that is sold under several brand names. It is >> inexpensive, and accurate enough for our purposes. > >Unless I'm remembering wrong, the TPN1151A was still a ferro supply just >like a TPN1110B. It had some kind of a switching circuit that was specific >to that model (which was the battery backup version power supply for the >Micor), but the main high current supply was still a ferro. At least that's >how I remember it. I can't remember ever having either of those supplies >fail (not even filter caps!) that I've never had to spend much time inside >them, nor their respective manual pages. > >If there's really interest in something like this, I can take both types of >Micor supplies, a GE M2 ferro, an Astron linear, a Duracomm/Iota switcher, >and maybe a few other things I have around and load test them at a few >different current draw points (something like no load, standby @2A, >mid-power transmit @ 15A, and high-power transmit @ 30A) and come up with a >table. I have a Transistor Devices electronic load good for 1000 watts so I >can do this with a fairly high degree of accuracy. I also have a Kill-A-Watt >along with traditional RMS-reading DVM's and amp-clamps too. If there's >interest email me and I'll put it on the ham projects to-do list. > >I'm thinking of a tabulation of input E/I/PF/VA/watts, output E/I/watts, and >efficiency (watts out vs watts out). Would that cover it? > >--- Jeff > >
