Schmitt trigger circuit in PWM signal reception
In PWM signal reception, the Schmitt trigger circuit is used
a) to remove noise
b) to produce ramp signal
c) for synchronization
d) none of the above
Correct Answer: to remove noise
In pulse width modulation, the width of the carrier varies with the amplitude of the modulating signal at the time of sampling. In PWM signal reception, the received PWM signal is applied to the Schmitt trigger circuit. The Schmitt trigger circuit is used to remove noise in the PWM waveform. This output is the supplied further for detection of the original information.