A Voltage Follower is an electronic circuit that outputs the same voltage as its input, providing high input impedance and low output impedance. This means it can take a weak signal and strengthen it without altering the voltage level. It is commonly implemented using an operational amplifier, often referred to as an op-amp. The primary purpose of a voltage follower is to buffer signals, preventing the source from being affected by the load. This is particularly useful in applications where the signal source needs to drive multiple loads or when connecting different circuit stages, ensuring signal integrity and stability.