Quote:
Originally Posted by Toasty
The title says 220vac, you're looking for 250vac. The capacitance is fine.
It's -only- a 12% difference in voltage, and for a trial to see if the noise stops, it's worth it. I would not leave it in place permanently.
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Thank you Toasty for the advice -
The original cap that is making the noise (and the one I intend to replace) is SIEMENS EPCOS 20uF 150V Capacitor.
Given that, these seem to fit the bill just fine:
http://www.bgmicro.com/24uf220vac.aspx
It's the age that worries me.
Quote:
Originally Posted by Toasty
Sealed caps like these are generally fine for a long time on the shelf. I would apply voltage slowly to make sure it is stable. A lamp in series with the power line. Or, try just feeding the cap through a lamp externally by itself, before installation. That would be a safer way, in case it decides to go *bang*!
If the lamp goes bright and stays that way, the cap is shorted.
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I can do that - the lamp acts as a current limiter (in case the cap is shorted)? Would a regular 40W incandescent work for this?