Wednesday, January 25, 2012

Active High Pass Filter And Active Low Pass Filter


High Pass filter: 
 A high pass filter blocks all frequencies from zero up to
cutoff frequency and passes all frequencies above the cutoff frequency.
In high pass filter we take output across the transistor.

By using fc=1/2∏RC

We can find cutoff frequency.
Low Pass filter: 
A low pass filter is a circuit

 that passes certain frequencies(from zero

 up to cutpff point) and rejects all other

 frequencies(above cutoff point).
In low pass filter we take output across the capacitor.

By using fc=1/2∏RC

We can find cutoff frequency.
Required Components
Resistors (1k,560k), IC Lm 741, Capacitors(0.022µF,47nF)

Battery 9V, battery clip for 9V, Wires, stripboard 12 rows × 25 holes


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