[Boatanchors] [ARC5] Postage Stamp Mica Question - SOLVED

[J. Forster]

More like forgotten knowlege.

-John

===============


> You can also find this information in any ARRL Handbook from the late 40s,
> the 50s and 60s.  Maybe a bit later too.  Guess that these days it's in
> the category defined by the Hy-Tech Snobs as useless.
>
> 73
>
> Mike
> W4DSE
>
>
>
>
> ________________________________
>  From: J. Forster <jfor at quikus.com>
> To: ARC5 at mailman.QTH.net; ArmyRadios at yahoogroups.com;
> Milsurplus at mailman.QTH.net
> Cc: boatanchors at mailman.QTH.net; boatanchors at puck.nether.net;
> Vintage-Military-RADAR at yahoogroups.com
> Sent: Friday, August 9, 2013 6:43 PM
> Subject: [ARC5] Postage Stamp Mica Question - SOLVED
>
>
> With thanks to Lee, there is a JAN or 'war' color coding scheme that uses
> a black or silver 1st dot for capacitor dielectric type ID. It is riefly
> described here:
>
> http://en.wikipedia.org/wiki/Electronic_color_code#Postage_stamp_capacitors_and_war_standard_coding
>
> Thanks all,
>
> -John
>
> =================
>
>
> Hi,
>
> I'm still working on the ART-4 transmitter and want to put values on the
> schematic. The unit has about a half dozen 'postage stamp' mica caps.
>
> They are all marked like 'Type 5' on thos page:
>
> http://www.radioremembered.org/capcode.htm
>
> and have 6 color dots.
>
> Reading in the correct order, clockwise starting at the top left, the dots
> are:
>
> Black
> Green
> Brown
> Black
> Yellow
> Red
>
> See the issue? The value SEEMS to be 051 pF; 400 VDC, 2%
>
> Question:  Was it ever convention to use a leading zero in color codes for
> this type of cap? I've never seen it before.
>
> Thanks,
>
> -John
>
> =================
>
>
>
>
>
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