The list price of these was $US839 and they are fan cooled. See HP Journal April 1975 for a description of the 62605M.
Bruce Joseph Gray wrote: >> A good test would be to load it down to its rated current and voltage >> and monitor noise with a clamp on current probe ( on one lead) >> to a low frequency spectrum analyzer >> > > I don't have a spectrum analyzer. I emailed a friend about using his. > > >> Open it up and look for tell tale signs of the original equipment >> manufacturer, possibly on the PCB. >> > > I don't find any vendor markings on the boards that I can see. The > main switching circuit is housed inside a metal box that would be > difficult to take apart. The entire assembly is built into another > metal box that has a removable top. Everything seems well shielded. > > I did do a test last night, using my Sony ICF-2010 shortwave receiver. > I can't power the Sony directly from the 13.8VDC, but I did plug its > power adapter into the same AC socket as the HP supply. With the Sony > sitting on top of the supply, I didn't notice any noise from the > supply on 80M-10M. I thought I heard some noise on 160M, but that band > was so noisy that it was hard to tell. > > If my friend with the spectrum analyzer comes through, I'll be able to > see some real measurements on the DC output itself. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
