[NJARC] Western Electric Capacitor Question

[Bill Zukowski]

Yes, WECO made many custom value components.  Back in the 70s I worked 
in the "acceptance" group in the AT&T Long Lines Telegraph (Teletype) 
group in NYC, testing newly installed central office equipment.  I saw 
1003 ohm _1%_ resistors, .0896 capacitors, and the weirdest value 
inductors I ever saw.  I still have some of the standard value 
resistors, and they're still within tolerance!

Almost everything WECO made was custom.  Rack panel screws were 
non-standard threads, even their loose leaf binder ring spacing was non 
standard!

On 2/7/2016 9:07 AM, E. Suhaka wrote:
> Just remember
> Reply = Poster
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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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