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Answer by qrk for Square wave of oscilloscope for RC circuit
There's another way to do this which is using the rise time. You can use the rise time approximation for a single pole RC low-pass filter to calculate the bandwidth of a circuit.$$ BW = {0.35 \over...
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Answer by glen_geek for Square wave of oscilloscope for RC circuit
Measuring capacitance via RC exponential rise using this hack can work. OP's method is slightly incorrect. Time constant is a bit longer, since OP's method doesn't start at the zero-volt reference:...
View ArticleAnswer by Rohat Kılıç for Square wave of oscilloscope for RC circuit
Using the test output is fine. Others have already mentioned the possible effect of the output impedance so I'm not going to repeat.To decrease the effect of loading the test output or its output...
View ArticleAnswer by Justme for Square wave of oscilloscope for RC circuit
In theory yes, but you likely don't know the specs of the square wave output, so you need to cancel out the effect of the output impedance, to better consider only the effect of the R and C you add.You...
View ArticleAnswer by Neil_UK for Square wave of oscilloscope for RC circuit
That in-scope square wave generator will be fine.Measure its output resistance, as that will add to the effective value of any series R you are using with your C. Do that by loading it with a resistor....
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Square wave of oscilloscope for RC circuit
I have some ceramic capacitors and would like to know for sure what capacitance they have.I don't have a multimeter (or any other instrument) that allows me to measure capacitance directly, so I build...
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