What Is a Darlington Transistor?
A Darlington transistor is an assembly where two or more transistors are connected to enhance current gain significantly. This configuration is named after the physicist John Darlington.
Commonly utilized in push-pull amplifiers and switching circuits, Darlington transistors excel in applications requiring current amplification and control. Including an additional transistor between the base and collector of another transistor allows for the control of substantial loads with minimal control current.
Thanks to its unique structure, the Darlington Transistor finds extensive use, especially in audio amplifiers and switching regulators. It offers considerable benefits, including high gain and high input impedance, making it particularly effective in scenarios demanding low-voltage or low-power operation.