all pass filter explained in telugu||linear IC Applications|| ushendra's engineering tutorials

#allpassfilter #filters all pass filter making use of op-amp has a major application in communication engineering, it allows the passage of all the frequencies without any attenuation, providing a required phase shift between input and output signal on the other hand. the phase shift depends on the values of resistor and capacitor which is connected across non-inverting terminal of the op-amp. when it comes to that of exam point of view, it will be asked to prove that the magnitude of transfer function of ALL PASS FILTER is unity.