[MakeLV] Cap going bad?

Will staticphantom at gmail.com
Fri Dec 23 12:09:05 CST 2011


The cap is rated to 200V but will not operate at 200V unless the supply
operates at that voltage. It is customary practice to try and get cap
rating voltages 10% or higher above the operating voltage for safety and
reliability.

-Will

On Fri, Dec 23, 2011 at 1:00 PM, David Smith <david at davincisciencecenter.org
> wrote:

> Doesn't sound right... Isn't the case supposed to be (-) or ground?
>
> Dave
>
> On Fri, Dec 23, 2011 at 12:36 PM, Josiah Ritchie <josiah at josiahritchie.com
> > wrote:
>
>> I'm messing around with another old pc power supply and found that the
>> top of one of the 200v 330mF caps is giving 150v when connected to ground.
>> Is this normal? The other caps have no problems.
>>
>> Yes, I discovered this through physical contact with the cap. My wife
>> thought a small animal was released in the room by the yelp I made. :-)
>>
>> JSR/
>>
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>
>
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