[NJARC] Western Electric Capacitor Question

[oldradio at comcast.net]

Hi Ed,

WE made telephone equipment and made all the parts to go in to them.  They didn't sell components outside the company, so there was no need to mark the value.  Working there and having a few surplus parts available, I didn't bother to bring them home unless I could figure from the schematics their values.  Still have a few around here.

Evidently Pete has a book noting values.  Wish I had that back when.

73, John

----- Original Message -----
From: "E. Suhaka" <Chitose6970 at poetworld.net>
To: manualman at juno.com
Cc: "NJARC" <njarc at mailman.qth.net>
Sent: Sunday, February 7, 2016 9:07:55 AM
Subject: Re: [NJARC] Western Electric Capacitor Question

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Thanks, Pete

Now I know what I have.  The flat rectangular shape and lack of standard 
markings made me wonder if WE had them made for some specific 
application of theirs.  They are of standard values but I never saw any 
other caps with this flat and rectangular shape but for these.

73,
Ed N2COV


On 2/6/2016 4:44 PM, manualman at juno.com wrote:
> WE 542S - .01 Mfd - 500V - Axial - Plastic (Polyester Metalized)
> WE  542D -  1 Mfd - 200V - Axial - Plastic (Polyester Metalized)
> WE 570DR - .1 Mfd - 200V - Axial - Plastic (Polystyrene Foil)
>
> Plastic ( polyester, polypropylene, polystyrene) capacitors use a thin
> wound plastic sheet as the dielectric.
> Plastic capacitors, in general, are used in practically all types of
> applications including coupling, bypassing, filtering, timing, noise
> suppression, and power factor correction. They may be used over frequency
> ranges to 10 megahertz or greater, depending on capacitance value and
> construction.
>
> Pete, wa2cwa
>
>
> On Sat, 06 Feb 2016 13:23:26 -0500 "E. Suhaka"
> <Chitose6970 at poetworld.net> writes:
> I have a handful of Western Electric capacitors.  They are yellow, and
> mostly flat and rectangular with a few that are cylindrical.  They are
> variously marked “542 S CAP”, “542 D CAP”, and “WE 570 DR CAP”.  I have
> measured them as .01 and .1 uF.  Does anyone have any idea what the
> voltage rating might be and if these were used for some special purpose?
>    A picture is attached.
>
> Thanks,
>
> Ed
> N2COV
>
>

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