[ARC5] Mica Capacitor

[Richard Knoppow]

    A note: The charts will show a color dot on some flat type caps 
which is either white or silver,  or black. Black is for mica, white or 
silver for paper. One may encounter flat paper caps in some older 
equipment, they were made by Micamold and Solar, maybe others. They 
should replaced. They may have been high performance when new but suffer 
from the same ageing problems as other paper caps.  They were sometimes 
used in place of mica caps in less critical applications during WW-2 
when mica was in short supply.  Plastic film caps are good replacements 
and probably superior to the originals when they were new.

On 9/17/2016 12:10 PM, WA5CAB--- via ARC5 wrote:
> Those charts are in most of the TM 11's printed from 1942 or 43 into the
> mid-1950's.
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
> In a message dated 09/17/2016 10:44:17 AM Central Daylight Time,
> releazer at earthlink.net writes:
>> Ken:
>>
>> Okay, I found the mica cap color codes in a copy of TM11-630.  I had
>> no idea
>> there were so many kinds.  Anyway, I decided that the codes on the
>> mica cap
>> matched the American War Standard, and equate to 0.01 mfd bypass cap,
>> 500V.
>> It's not too hard to find a ceramic disk cap with those values!
>>
>> By the way, I scanned the cap color code section out of that TM and if
>> any
>> one wants a copy I can e-mail it to you.
>>
>> Thanks!
>>
>> Wayne
>
>
>
>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL