I found this unit at the local landfill and it has an output, however the panel meter which doubles as a voltage or current indicator depending upon which front panel switch you push in, does not indicate anything. Does anyone have a schematic for this power supply or do you know by chance if anything in particular on the rear terminal strip needs to be strapped for a on board reading? Thanks very much for any assistance. Lenny Stein, Barlen Electronics.
Harrison Labs 6207A DC power supply
Oct 18, 2004
3 Replies
I do not know of any commercial PS that requires jumpering to get a front panel meter to work. Take the case off and check the wiring and most especially, the switch (corroded, maybe). Also it does not hurt to check the meter with a battery and series resistor (no power = PS unplugged). Assume 100uAFS and set current to near 50uA; if 1mAFS you will still see some deflection.
I got some HP PS schematics from Ed Matsuda for a very reasonable price. His email is at earthlink.net, and the part before the at sign is "ematsuda".
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