Here is simple RC filter calculator for calculatie cut-off frequency of a low-pass and high-pass rc filter:
| R = | Ohm | |
| C = | Fahrad | |
| f = | Hertz |
low-pass filter is a filter that passes signals with a frequency lower than a certain cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency.
high-pass filter is an electronic filter that passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency.
More about low-pass and high-pass filer can be found on wikipedia.