[Hallicrafters] [Boatanchors] Request for Most Common Capacitor Values to be Reproduced
Carl
km1h at jeremy.mv.com
Mon May 3 21:18:57 EDT 2010
I work on ham and vintage consumer radios and the .05 is very common.
I prefer discs for the values up to .01 or even .05 depending on the
voltage. Others may want all tubulars
When working on a SX-28, SX-42, SX-62 the reduction in size makes a huge
difference in neatness and ease of working. At times a 630V film is too big
when the circuit voltage is under 100V which is why I asked for the 200V.
More room, more airflow, less heat.
National used a 1.0 uF @ 200V in a few radios. Actual voltage is a hair
above zero.
Ive seen very few communications/ham gear using a .5 but that and .2 is
common in tube type auto radios in the 6V/12V input filtering. The auto
radios are jam packed and you have to work thru layers of components at
times. When Im finished every part has its own real estate, thanks to discs
and compact films.
I wont use parallel caps, it looks hokey and typical radio/TV service tech
sloppiness of the 50-60's. I get a fair amount of that stuff in and its
gross especially when there are several, plus series or parallel groups of
resistors.
Carl
KM1H
> Hi Todd,
> I agree with your values, tho' Carl's got a point on the .047. I don't
> think it's as often needed (here) as the .47. Also, if size/price isn't
> much different, only 600v would handle everything.
> 73,
> Al, W8UT
> www.boatanchors.org
> www.hammarlund.info
>
> "There is nothing -- absolutely nothing -- half so much
> worth doing as simply messing about in boats"
> Ratty, to Mole
>
>>
>> The question is, what values would be the most handy to have supplied
>> into the future for restoring old gear? Obviously we can't do a lot of
>> oddball values as we're mainly looking for values that will sell well
>> and be attractive from a production prospective. The few that popped
>> to mind for me were:
>>
>> .1, .01, and .47 mfd at both 400 and 600 vdc. I also specified axial
>> lead instead of the radial leads found on Orange drops since axial
>> leads are better suited to our needs. I'm looking for other values
>> that are likely to be encountered often enough to warrant production.
>> Maybe 6-12 different values to choose from. These would be caps used
>> for bypassing and such, not filtering. I suspect we could get them
>> 'banded' for the foil side as well if folks feel that is important
>> enough.
>>
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