[ARC5] Cap Test

[J. Forster]

FWIW, Huntrons are mostly useful for comparisons IMO. That is, comparing a
known good, reference unit, with a malfunctioning one.

They are near useless for measuring anything.

YMMV,

-John

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



>       Huntrons are good, but they run a higher voltage  on the probes.
> That makes it harder to test higher capacitance capacitors.
> You need to get down around 10 volts for testing them.
>
> On 02/08/2011 08:55 PM, D C *Mac* Macdonald wrote:
>> Even better, try to find a good Huntron Tracker!
>>
>> * * * * * * * * * * *
>> * 73 - Mac, K2GKK/5 *
>> * (Since 30 Nov 53) *
>> * Oklahoma City, OK *
>> * USAF, Ret (61-81) *
>> * * * * * * * * * * *
>>
>>
>>
>>> Date: Tue, 8 Feb 2011 18:29:49 -0600
>>> From: kenslimmer at aircanopy.net
>>> To: arc5 at mailman.qth.net
>>> Subject: Re: [ARC5] Cap Test
>>>
>>> Robert;
>>> The best thing I have used to test Electrolytic Caps is a
>>> oscilloscope with a component tester, or add an "Octopus" to a regular
>>> oscilloscope. Once you understand what you are looking for, its easy
>>> to see a leaky cap with one. Even better you can use it for
>>> semiconductors.
>>>
>>> Ken WA0SBU
>>>
>>>
>>> On 02/08/2011 10:55 AM, Robert Eleazer wrote:
>>>> Y'all please note that in WWII they "hacked" the equipment too. As the
>>>> esteemed Mr. White described in his legendary articles, USAAF techs
>>>> produced 9-13, 20-27 MHZ and 30-40 MHZ versions of BC-455's. Would
>>>> hacking a unmodded set to produce one of these rare versions not be a
>>>> worthy endeavor?
>>>>
>>>>
>>>> And moving on now to less philosophical, and one would hope, less
>>>> controversial realms, I wonder if anyone can recommend a quick and
>>>> dirty test for electrolytic caps.
>>>>
>>>> Last night I turned not one, but two, 5Y3GT's into momentary night
>>>> lights. I am trying to figure out why and I'm trying to decide if the
>>>> previously satisfactory replacement electrolytic filter cap has turned
>>>> violent.
>>>>
>>>> Normally I charge up a cap, remove the power and see how long it takes
>>>> for the charge to dissipate. Instantaneous loss of voltage is bad. If
>>>> it lingers on a while, slowly decaying at a steady rate, that's good.
>>>>
>>>> Any ideas?
>>>>
>>>> Wayne
>>>>
>>>> WB5WSV
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