Electronics Handbook/Circuits/Low-pass Filter
Low-pass Filter edit
A low-pass filter has a stable voltage at low frequencies and increasing voltage at high frequencies.
Low-pass Filter , LR Configuration edit
Picture
Vo/Vi edit
Frequency Response edit
- ω = 0 .
- ω = .
- ω = 00 .
LR has a stable voltage at low frequencies and increasing voltage at high frequencies.
Low-pass Filter , RC Configuration edit
Vo/Vi edit
- với
Frequency Response edit
RC has a stable voltage at low frequencies and increasing voltage at high frequencies.
Summary edit
- Low-pass filters have a stable voltage at low frequencies and increasing voltage at high frequencies.
- Low-pass filters can be constructed from RC or LR.
- Low-pass filters have a general formula:
- . T = RC =