What is one characteristic of Field-Effect Transistors (FETs)?

Field-Effect Transistors (FETs) are known for their high input impedance. This characteristic is crucial because it means that FETs draw very little current from the preceding circuit when operated. The high input impedance allows FETs to be used in applications such as amplifiers, where they can take a small input signal and amplify it without significantly affecting the signal source.

High input impedance also means that FETs are less likely to load down the circuits they connect to, making them ideal for interfacing with sensitive components or for use in high-frequency applications. Conversely, other transistor types, like Bipolar Junction Transistors (BJTs), typically have lower input impedance, which can lead to different operational characteristics and limitations in specific circuits. This emphasizes why high input impedance is a defining feature of FETs, enabling them to perform effectively in many electronic applications.