[ARC5] Disc Capacitors

[Geoff]

> On Sun, 2013-03-03 at 11:25 -0500, Geoff wrote:
>
>>
>>   For high volume radios and TV's most manufacturers didnt bother with
>> unnecessary information on their caps, they ordered huge quantities and 
>> as
>> long as assemblers knew what to grab that is all that mattered.
>>
>> Service shops could consult SAMS if they had a need to know more but I 
>> doubt
>> it happened much as they could care less. A .01 was a .01 for 99 44/100% 
>> of
>> the time
>>
>> Same with low priced sales outlets, they bought the same, often mfg
>> overstocks or part of the same production runs as the equipment
>> manufacturers. Since the early 50's the .01 500V was about 1/2" in 
>> diameter
>> and unmarked except for value and maybe a logo or just a part # such as
>> Zenith used. When standards evolved more info was added.
>>
>> Ive treated those unmarked .01's and the slightly larger .05's as 500V 
>> for
>> decades and have used in all sorts of 200-300V non critical circuits 
>> without
>> even a hint of failure. As mentioned, higher voltage ones are thicker and
>> Ive yet to see any 1000V or higher that were not marked.
>>
>> Carl
>>
>
> So...
>
> Those would probably be useful in the screen bypass locations used in
> receivers and in transmitters before the high voltage plate circuits...
>
> Thanks Carl.
>
> 73,
>
> Bill  KU8H

As well as general purpose B+ plate, screen, cathode bypasses plus audio 
coupling in receivers. Even AVC circuits sometimes used higher values of a 
huge tolerance range altho I tend to go with no more than 20% when replacing 
paper caps. And when rebuilding an all mode receiver I use 5-10% when 
tailoring the response for each switch setting.

Carl