I'm not sure how to identify a trimmer properly. I heard it's marked with the first number as the lowest value in pF followed by the next two being the highest value. So, the picture below is 4-72pF? Is that true? If so, how about one that I have that says 103, is that 1-3pF? that seems unlikely, or is the zero like a multiplier, and it's 1-300pF?
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PIC 1
I also need to make sure I know this is correct for variable capacitors like shown below. If I'm wrong can someone try in tell me the values of the capacitors in PIC 2
2.5 turns 48 - 59nH (Red)
3.5 turns 65 - 79nH (Orange)
4.5 turns 90 - 109nH (Yellow)
5.5 turns 109 - 132nH (Green)
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PIC 2
Anyway,
here's the project I'm working on that I think audioguru posted. I know it's simple but the last one I built took on a life of its own. I need to know if I could use something else for C5 that's suppose to use a 4.7pF. I have a 4 and 5pF on hand, and radioshack doesn't have anything in town. There's nothing for miles like that around here.
I need to learn more about capacitors, but I can't find any good (free) resources on the web. Can anyone tell me of a good site that will show me how to get a good hold on it.
Thanks for answering my noobie questions.