Path: utzoo!mnetor!uunet!husc6!ukma!psuvm.bitnet!oic
From: OIC@PSUVM.BITNET
Newsgroups: sci.electronics
Subject: Strange diode? / HP412A Meter
Message-ID: <34908OIC@PSUVM>
Date: 1 Mar 88 20:22:41 GMT
Organization: The Pennsylvania State University - Computation Center
Lines: 17

I am posting this on behalf of a friend.  He has an HP412A precision
DC voltmeter-ohmmeter-ammeter, circa late 1950s.  In the course of
repairing it, he came across an unusual component.....it is in a gold
metal can (transistor size), and has two leads coming out.  It also has
a small indentation stamped in the top, opposite from which are painted
yellow and violet dots.  When removed from the circuit, and tested on
a VOM, it appears to be a diode.  There are no other identifying features.

Can someone advise as to exactly what this part is?  Does anyone have
a schematic or service manual for this antique?

Replies via email to sender, or to MRB @ PSUECL (via BITNET), and I
will watch this newsgroup for followups.

Thanks in advance for your help.

WA3ZXO