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From: larry@tapa.uucp (Larry Pajakowski)
Newsgroups: sci.electronics
Subject: ESR of copper oxide rectifiers
Message-ID: <1989Dec12.022128.3128@tapa.uucp>
Date: 12 Dec 89 02:21:28 GMT
Organization: Pata Consultants
Lines: 12

In refurbishing my old Lionell train transformer I replaced a copper oxide
rectifier of about 1in. diameter with a silicon diode.  In the original
circuit a compensation winding of 5 volts was switched in series with the
copper oxide diode to keep the output from sagging too much.  I'm trying
to get some idea of the series resistance of the copper oxide diode so I
can put a resistor in series with the silicon diode.  I suspect the
resistance is about 1 - 2 ohms.

Anybody have any experience.  How about old Gamewell alarm power supplies?


Larry Pajakowski