I blew up the LM-723 in my old Astron VS-35M by trying to use it as
a battery charger quite a few years ago (I bought the Astron to power
my TS-180S in 1981). A year ago it failed to output and blew the
fuses. Turned out one of the rectifiers shorted. I replaced both
and its working fine as workbench PS. I guessed the output pass
regulator transistors shorted so bought four. Now I have four spares
(2016-1981 = 35 years and counting).
My workplace (retired seven years) used a bunch of Basecom-20 which
were identical to Astron RS-20A which all used the LM-723. My guess
Astron markets a lot of PS that are relabeled.
I use a 50A PS for powering my station (Has TAIT Two-way Radio label
but meters are labeled Astron; guessing RS-50M). It maintains a
charge on a 17AH gel-cell which I use to power by station 10-MHz OCXO
reference. It's run 24/7 for years. Much newer than the VS-35M.
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
[email protected]
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