Fundamental Physics/Electronics/Electronics Filter/Low pass filter

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Low pass filter[edit | edit source]

Low pass filter is an electronics device that has a constant voltage over low frequency . Low pass filter can be constructed from LR and RC as shown .

R-C[edit | edit source]

Low pass filter.png

Low pass filter has a transfer function

Time constant

Frequency response of Low pass filter

Cut off frequency, , frequency at which

L-R[edit | edit source]

Low pass filter has a transfer function

Time constant

Frequency response of Low pass filter

Cut off frequency, , frequency at which