- Joined May 31, 2008
Thanks everyone. I was sorting my parts bin, and came across these. So are you telling me what I have in my bin may actually be 330pF? I have no way to check them. Just wanted to make sure they wind up in the right cabinet drawer.
There's a current standard for capacitor marking?I agree. When it will make a difference, check -- not unlike confirming the fuel in your airplane. Standards change, and you can never be absolutely certain whether something is labeled according to the most current standard.
Good idea. Yes, I have a 20Mhz oscilloscope. Since I'm just now getting started back on electronics and getting my workbence in order, I may check this later. But I think I could use t=RC at which V=70% of peek to confirm this value. Or I could do it by reactance measurements using X=1/(2piFC).You have lots of ways to check them, depending on what you have available. Do you have an oscilloscope? If so, then make a little RC circuit using 1MΩ resistors and measure the time constant. If you have some basic digital parts then you can make any number of oscillator circuits that go into a frequency divider with enough stages to blink an LED as a slow enough rate for you to visually tell the difference between 1Hz and 10Hz, for example.
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by Luke James