Re: Safely testing 22 kV capacitors



On Thu, 30 Mar 2006 19:47:06 GMT, Ignoramus27088
<ignoramus27088@xxxxxxxxxxxxxxxxxxxx> wrote:

I think that I can easily test them at low voltage with a capacitor
testing function of my multimeter.

Would testing them ALSO at HV be worthwhile?

Measuring the capacitance will tell you that they are still capacitors, but
not that they will hold rated voltage. You could cgarge them up to the
capacity of your HV supply, let them sit a while then discharge them with a
well insulated shorting bar to see if they still held a charge.

BTW be careful about using the HV from a color TV, they can run well over
22KV on larger sets,
.



Relevant Pages

  • Re: Caps and Diode setting on meters
    ... Capacitance is measured in Farads. ... Which unit you use depends on what you're measuring. ... plates holding a higher charge? ... The neat part about sine waves is that the integrals and derivatives ...
    (sci.electronics.basics)
  • Re: Specs for Murata piezo-speaker
    ... What you are observing, I think, is that it has some internal capacitance ... of my digital multimeter I measures 133 nF across the piezo speaker. ... When it comes to resistance across it there's something strange going ... wire and the - probe to the red wire) no value is displayed in any ...
    (sci.electronics.components)
  • Re: Finding the Capacitance from Lissajour plot info?
    ... Wayne wrote: ... > that I am measuring the capacitance of a cell - such as a batery and trying ... the source impedance of the thing could be quite ...
    (sci.electronics.equipment)
  • Re: Finding the Capacitance from Lissajour plot info?
    ... Wayne wrote: ... > that I am measuring the capacitance of a cell - such as a batery and trying ... the source impedance of the thing could be quite ...
    (sci.electronics.design)
  • Re: Finding the Capacitance from Lissajour plot info?
    ... Wayne wrote: ... > that I am measuring the capacitance of a cell - such as a batery and trying ... the source impedance of the thing could be quite ...
    (sci.electronics.basics)