LOW PASS FILTER
AIM- To study low pass filter circuit.
APPARATUS – Signal generator, CRO, LPF board.
INTRODUCTION-
Low pass filter allows the low frequency components of applied voltage developed output across load. While high frequency component are attend or reduces in output the low pass filter circuit capacitor ‘C’ It’s connected in parallel with load or L or R is connected in series with load at higher frequency Xc is low capacitance pass high frequency components to ground but at low frequency Xc is higher so capacitor does not passes low frequency to ground hence low frequency components appears across load.
Low pass filter attenuates high frequency components the ability to reduce amplitude and understand frequency is the attenuation and filter frequency. At which reduce the output to 70.7% and maximum response is to output frequency.
PROCEDURE-
1) connet the circuit as shown in figure.
2) Set the frequency of input at 1 KHz.
3) Measured output voltage on CRO.
4) Very the frequency of input signal voltage.
5) Plot the graph of the frequency v/s output voltage.
CONCLUSION- The circuit passes only low frequency opposes or stopped the high frequency.
APPARATUS – Signal generator, CRO, LPF board.
INTRODUCTION-
Low pass filter allows the low frequency components of applied voltage developed output across load. While high frequency component are attend or reduces in output the low pass filter circuit capacitor ‘C’ It’s connected in parallel with load or L or R is connected in series with load at higher frequency Xc is low capacitance pass high frequency components to ground but at low frequency Xc is higher so capacitor does not passes low frequency to ground hence low frequency components appears across load.
Low pass filter attenuates high frequency components the ability to reduce amplitude and understand frequency is the attenuation and filter frequency. At which reduce the output to 70.7% and maximum response is to output frequency.
PROCEDURE-
1) connet the circuit as shown in figure.
2) Set the frequency of input at 1 KHz.
3) Measured output voltage on CRO.
4) Very the frequency of input signal voltage.
5) Plot the graph of the frequency v/s output voltage.
CONCLUSION- The circuit passes only low frequency opposes or stopped the high frequency.