[Test-Equipment] Eico 950 capacity bridge Operating Instructions

[Gary H. Harmon, Jr.]

http://bama.edebris.com/manuals/eico/

Here you go Ray.

Gary H. Harmon, Jr. - K5JWK - HAM Radio, HEATHKIT, and ATARI Archaeologist
6003 Archwood
San Antonio, TX 78239-1504
(210) 657-1549 <home>
(210) 884-6926 <cell and text>
(210) 657-1549 <FAX with prior notification>
gharmon at idworld.net

"Retirement = Every day is a Saturday except Sunday"
"Real radios glow in the dark"
"Too many projects, not enough time"

http://www.grissomroadcoc.org


-----Original Message-----
From: test-equipment-bounces at mailman.qth.net [mailto:test-equipment-bounces at mailman.qth.net] On Behalf Of Ray LaRue
Sent: Saturday, April 04, 2020 8:23 PM
To: test-equipment at mailman.qth.net
Subject: [Test-Equipment] Eico 950 capacity bridge Operating Instructions

This is going back many years, but maybe there are a few "Old Timers" on 
this list to ask.

I obtained at a hamfest, an old Eico 950B cap bridge which is in 
excellent appearance and apparently good condition.   I reformed the 
capacitors and it seems to be working.  I also have the schematic as 
well as the original kit building instructions.

However, there are no operating or user instructions with it, beyond 
just checking the bridge with a precision 200k resistor.

I've been told this bridge is superior to today's low voltage capacitor 
checkers for testing older higher voltage capacitors, because it checks 
them closer to their operating voltages.  But I only read about 45 volts 
across the test points and that doesn't change when varying the front 
panel voltage control.

FYI:  I also have later more modern testers such as Antek Blue ESR 
tester; a Sencore Z Meter and a Tektronix DMM916 for capacity checks.

Is there anyone that has used the Eico 950B tester extensively in the 
past or present, that can clue me in on the best ways to check NOS HV 
electrolytic caps with it?  Or, is there an operating manual available?  
I have checked BAMA for one, no luck.

Your attention is appreciated.
Ray, W4BYG (with a bunch of tubed classics and antiques to refurbish)

-- 
They say a smart person learns from their mistakes.  A
wise person learns from the mistakes of others.



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