Hi all,
Another dumb question...
I just received an order of ceramic capacitors for the transmit board (C1, C2, C4, C5, C6, C9) which are supposed to be 100nf/50V. The marking on the capacitors is 104 which I understand to mean .1uf or 100nf or 100000pf (I think that's the correct number of zeros!). However, when I measure the capacitor with my meter I read about 46nf or about half the value I expect.
Is this normal/OK?
Cheers.
Hello,
The first two numbers are value, the third is a multiplier. 104 = 10 x 10(4) = 10(5) = 100 nF
(The numbers in parentheses should be small = exponent.)
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(19-03-2019, 16:49)WetCoast Wrote: [ -> ]...
The marking on the capacitors is 104 which I understand to mean .1uf or 100nf or 100000pf (I think that's the correct number of zeros!). However, when I measure the capacitor with my meter I read about 46nf or about half the value I expect.
Is this normal/OK?
You are right, 104 is the correct mark for a 100nF capacitor.
I believe that common capacity meters aren't able to give precise capacity readings, at least that is what happens with my capacity meter.
Sorry,
I didn't understand your question exactly ...
Indeed, some cheap measuring devices measure nonsense. But again, some surprise with their relative accuracy - such
as the picture - from China bought a relatively cheap Transistor Tester kit.
(The same capacity of 104 is always measured in the figures.)
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Thanks very much for your responses.
I will attribute the error to my meter, it isn't all that cheap (at least I didn't think it was) but it isn't really expensive either.
So I'll trust the markings on the caps and install them and not worry about it.
Thanks again.
(20-03-2019, 02:54)WetCoast Wrote: [ -> ]I will attribute the error to my meter, it isn't all that cheap (at least I didn't think it was) but it isn't really expensive either.
So I'll trust the markings on the caps and install them and not worry about it.
On the contrary, I recommend never to label any designation and always measure each component in advance!
(20-03-2019, 02:54)WetCoast Wrote: [ -> ]Thanks very much for your responses.
I will attribute the error to my meter, it isn't all that cheap (at least I didn't think it was) but it isn't really expensive either.
So I'll trust the markings on the caps and install them and not worry about it.
Thanks again.
I think we can trust in the markings on the caps. Go ahead.
my readings. It's kind of hard to read the numbers on the capacitor but it says 104 and the meter reads 43.0 nF
Do you think this is a problem? or will I be OK using these capacitors for the TX board C1, C2, ETC?
