[Boatanchors] FS: Simpson Capacohmeter Model 383A - MINT Cosmetics
Jerry O. Stern
jsternmd at att.net
Thu Dec 22 16:41:52 EST 2016
FS: Simpson Capacohmeter - cosmetically mint, electronically should have old
electrolytics replaced before using it (so I cut off the AC line). $75
plus shipping.
The Simpson 383A was designed for vacuum tube circuits to measure --- 1)
capacitance, 2) leakage resistance (DC) - includes 1000 megaohmeter, and 3)
AC pulse testing to measure "in-circuit" capacitors such as coupling caps
between stages where there is no low resistance or low reactance component
in parallel to the cap being tested. It uses a thyratron relaxation VFO to
generate a pulse test circuit. I wish I had this a few years ago when I was
chasing down bad mica coupling caps in my KWS-1.
This instrument generates HV pulsed AC and can kill you if you don't know
how to work with HV circuits.
Pictures and copy of schematics can be seen at
http://www.ny2kw.com/simpson-383a.html. Manual and notes captured over the
years will be included with meter when shipped
73 es HH
Jerry NY2KW
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