Determining the values of old capacitors

Thread Starter

Jabzie

Joined Nov 6, 2017
2
Hey,

As the title suggest, I am wondering how one can read the values of the capacitors seen on the picture?

cap.jpg

Thanks in advance!
 

AlbertHall

Joined Jun 4, 2014
12,625
That will tell you actual capacitor value but not the value it is supposed to be and so could be misleading if the capacitor is faulty.
 

dendad

Joined Feb 20, 2016
4,637
My post was a bit cheeky and I apologise if it was taken that way.
That table on reading the colours, Alec_t, could come in handy.
Still, one of those component identifiers from EBay is a good buy. But they do need a power switch added as in the "off" state they run the battery down after a few weeks. I have found it a very useful tool.
 

Thread Starter

Jabzie

Joined Nov 6, 2017
2
I was hoping there was a way to determine the supposed value of the capacitors rather than measuring the actual values.
 

panic mode

Joined Oct 10, 2011
4,974
the only way to determine value of anything is to measure it (directly or not).
this means placing tested component (DUT = Device Under Test) into a circuit and taking measurement(s).

for example you can build an oscillator (even 555 will do) and compare resulting frequency to that of known capacitor(s).
output could be audible or visual. if frequency is too high, one can use counter to divide it by some fixed value.

Btw. even low cost multimeters today have capacitance measuring range.
 
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