This may be old news already, and it's of small import, so I appologize if it's redundant.
I started finding it a bit tedious using the f = 1/(2*PI*R*C) equation to find a filter corner frequency, so through some very basic math, I found a constant ( 159155 ) That when divided by the multiplication of ( resistance * capacitance-(uf) ) gives you a very close appoximation of a filter corner frequency.
The constant is fairly easy to remember, and the shortcut requires no fidling with converting microfarads to Farads, as those really small numbers are sometimes prone to errors, with the resulting string of zeros.
So there are only two steps to the shortcut, divide 159155 by the product of R x C, and there you have it : F = 159155 / (R * C).
Here's a real world example : r = 47000 c = .022uf
159155 / (47000 * .022) = 153.92hz
All comments are welcome, and any potential improvements as well !!!
I started finding it a bit tedious using the f = 1/(2*PI*R*C) equation to find a filter corner frequency, so through some very basic math, I found a constant ( 159155 ) That when divided by the multiplication of ( resistance * capacitance-(uf) ) gives you a very close appoximation of a filter corner frequency.
The constant is fairly easy to remember, and the shortcut requires no fidling with converting microfarads to Farads, as those really small numbers are sometimes prone to errors, with the resulting string of zeros.
So there are only two steps to the shortcut, divide 159155 by the product of R x C, and there you have it : F = 159155 / (R * C).
Here's a real world example : r = 47000 c = .022uf
159155 / (47000 * .022) = 153.92hz
All comments are welcome, and any potential improvements as well !!!
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