Introduction

Analog circuits use signals that can vary continuously from zero to full power supply voltage. This stands in contrast to digital circuits, which almost exclusively employ all-or-nothing binary signals (1 and 0).   

Analog electronic circuits process continuous signals, representing information through varying voltage or current levels. These circuits utilize components like resistors, capacitors, inductors, diodes, and transistors to perform tasks such as signal amplification, filtering, and waveform generation.   They are essential for applications requiring precise signal manipulation and are often found in audio amplifiers, radio receivers, and power supplies.