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Results tagged with cutoff-frequency
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user 46783
A cutoff frequency is a frequency boundary in a system's frequency response at which the power level is greater or less than a given fixed value.
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How do I calculate the cutoff frequency of a low pass rc circuit?
The specific formula applies only for a first order RC low pass filter. This is derived from its frequency response:
$$H(j\omega)=\frac{1}{1+j\omega RC}$$
The cutoff frequency is defined as the freq …
- 1,199
4
votes
Deriving 2nd order passive low pass filter cutoff frequency
In my opinion this 'cut-off' frequency is not defined as the -3dB point. The real transfer function is: $$ H(s)=\frac{1}{s^2R_1R_2C_1C_2+s(R_1C_1+R_1C_2+R_2C_2)+1}$$
The 'common form' of a second ord …
- 1,199