[Amps] Johnson KW Matchbox relay question

[Paul Christensen]

Vic,

The schematic shows a 16uF/250 cap directly across the coil.  An 18-ohm/2W
resistor is in series with what *appears* to be a cap that together are in
series with the 115 VAC source.  However, that cap is shown on the schematic
as two small "plates" but those plates may in fact be a rectifier, possibly
even selenium.    That's the only configuration that makes sense to me.

Paul, W9AC

-----Original Message-----
From: Amps <amps-bounces at contesting.com> On Behalf Of Victor Rosenthal 4X6GP
Sent: Tuesday, April 21, 2020 10:56 AM
To: Amps reflector <amps at contesting.com>
Subject: [Amps] Johnson KW Matchbox relay question

Not exactly an amp question, but you guys will know.

I have a relay that was removed from a Johnson KW matchbox. I know the
Matchbox relay operated from 115 vac, but the relay is not an AC relay. 
I suspect that at some point the Matchbox contained a rectifier and possibly
other components.

I tried the relay on 32v dc and that was enough to hold it, but not pull it
in. 115 vac just makes it hum.

I suspect it is a 115 V DC coil. Does anybody know before I destroy it with
my experiments?

Part no. is EF Johnson 22-1153 or AEMCO 51-2595.
--
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
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