Peak Detector Ic. Peak detector circuits are used to determine the peak maximum value of an input signal. Dual comparator ic lm393 is the heart of this circuit.
This is achieved by peak detector circuit. A positive peak detector captures the most positive point of the input signal and a negative peak detector captures the most negative point of the input signal. The following figure shows a simple peak detector circuit using diode and capacitor.
Dual comparator ic lm393 is the heart of this circuit.
The peak to peak voltage detector circuit we will build with 2 diodes and 2 capacitors is shown below. Peak detector circuits are used to determine the peak maximum value of an input signal. So input into this circuit is an ac voltage signal. This circuit operates from 5v dc and can detect signals up to 150 khz.