True - but it is "microfarad", and is is a lower case Greek μ , so rocky got 2 out of 3 right - and, of course, it is also very commonly written as "uF" in situations when Greek letters are not available (and many situations when such a letter is available) - so I'm inclined to give him 2½ out of 3
No, No - definitely not live. Indeed, ideally with one end of the capacitor disconnected (I was rather thinking that you had completely removed it).
All very true - but, as I said ...
.. IF there is a persistent low resistance even when tested with the low voltage multimeter, then there's almost certainly a problem with the capacitor. If the multimeter doesn't indicate that, then one has not learned a lot, and therefore has to move on to other testing. However, it's worth a try (particularly if a multimeter is all one has), because it might provide an answer.
Not necessarily.
is encoded in the Greek range at U+03BC. According to The Unicode Consortium, the Greek letter character is preferred,[4] but implementations must recognize the micro sign as well.I'm afraid I'm not.rocky got 2 out of 3 right - and, of course, it is also very commonly written as "uF" in situations when Greek letters are not available (and many situations when such a letter is available) - so I'm inclined to give him 2½ out of 3
Hmmmm. Rocky only mentioned MFD because that was what was written on the OP's capacitor - and it's still an abbeviation which is not uncommonly used:I'm afraid I'm not. u/μ/micro - any points there are negated by him saying that microfarad can also be written mfd.rocky got 2 out of 3 right - and, of course, it is also very commonly written as "uF" in situations when Greek letters are not available (and many situations when such a letter is available) - so I'm inclined to give him 2½ out of 3
Yes, that's always been the case - and I suppose that, at least traditionally, it was not particularly ambiguous because, until the last decade or three, capacitors in the millifarad range were very rarely, if ever, seen. Indeed, even today, one very rarely sees 'millifarad' used - very large capacitors (still not that common) are usually still described with μF values - e.g. 47,000 μF.
No. I haven't seen MMFD (or mmfd) used for a long time, but it actually means/meant "micro micro farad" - i.e. pico-farad, not nano-farad.
I guess that depends upon what you regard as 'correct' terminology. This document says:
.
I think you need to explain to us what those numbers actually mean - i.e. what does "1000" mean when the meter is set to 20M ohms? Does it perhaps mean 1M ohms? Do you have the meter's instructions?
I find it hard to believe that it's really 20,000 Farads - even 20,000 microfarads (millionths of a Farad) would be a very large capacitor - 200 times larger than yours. Whatever, I personally don't see that you would gain much by acquiring a means of measuring the capacitance of your capacitor, but others may disagree. A a replacement cap would probably cost you less than even that cheap meter (even if it works at that price!).
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