Gualdhar Posted February 27, 2010 Report Share Posted February 27, 2010 Sorry for a possibly newbie question, but I'm trying to build the Capacitance Meter listed at http://www.electronics-lab.com/projects/test/006/index.html and I'm wondering about the symbol for the 47k, 470, and one of the 10k resistors. It has a resistor with something that looks like maybe a feedback loop? I can't tell what it is or how to build it, and could use some assistance.Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted February 27, 2010 Report Share Posted February 27, 2010 They're potentiometers (variable resistors) which are used to calibrate the meter. Quote Link to comment Share on other sites More sharing options...
Alex Tsekenis Posted February 28, 2010 Report Share Posted February 28, 2010 Adding on Hero's post, they look like this:The second type is probably what you are looking for for your capacitance meter.You can buy them very cheaply at your local electronics shop. Quote Link to comment Share on other sites More sharing options...
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