Discussion in 'General Electronics Chat' started by CircuitSurfer, Dec 29, 2009.
I have these parts but not sure what they are. Can someone help me ID them? Thanks.
I would guess inductors, but I'm not sure about reading the dots. If a meter shows 0 ohms between the leads, that is probably what they are.
If the dots are blue-red-brown, I think they'll be 620uH or 620nH.
If blue-black-brown, that's 600uH or 600nH.
I am going to add my vote to those that have identified the mystery components as inductors. They don't appear to show any indication of a polarity so they are not likely to be capacitors.
A quick measure with an ohmeter would help confirm the guess.
Thanks for your replies. Maybe I can use them to build an audio filter.
As a side note can someone check that I'm using the correct ceramic capacitors
103Z = 0.01 uF
102 = 0.001 uF
472Z = 0.0047 uF which would be approx 0.05 uF
I think you meant to write 0.005 uF.
yes I meant 0.005. I have the 0.0047 and will substitute it for the 0.005 one.
You could use the inductors in the two transistor version of the "joule thief".
See this link for circuit details.
Here is a better link containing a schematic.