A peak detector circuit captures and holds the highest voltage level of an input signal. It typically uses a diode to allow current flow only during the rising edge of the input and a capacitor to store the peak value. A resistor provides a slow discharge path, allowing the circuit to track higher future peaks while ignoring lower fluctuations. This setup is useful in signal analysis, envelope detection, and amplitude monitoring. #ElectronicsEducation #electronicsrd #peakdetector | Electronics E