What does a Darlington transistor do?
A Darlington transistor acts as a single transistor with high current gain, it means that a small amount of current is used from a microcontroller or a sensor to run a larger load. The below Darlington circuit is built with two transistors shown in the circuit diagram.
What is meant by Darlington?
In electronics, a multi-transistor configuration called the Darlington configuration (commonly called a Darlington pair) is a circuit consisting of two bipolar transistors with the emitter of one transistor connected to the base of the other, such that the current amplified by the first transistor is amplified further …
Why is the Darlington configuration?
A Darlington Transistor configuration, also known as a “Darlington pair” or “super-alpha circuit”, consist of two NPN or PNP transistors connected together so that the emitter current of the first transistor TR1 becomes the base current of the second transistor TR2.
Why Darlington pair has high current gain?
Advantages of Darlington Transistor The main advantage of a Darlington transistor is the high current gain. So, a small amount of base current can trigger the transistor. It offers high input impedance which translates into an equal decrease in output impedance. It is a single package.
Which of these are incorrect about darlington amplifier?
1. Which of these are incorrect about Darlington amplifier? Explanation: A Darlington amplifier has a very high input resistance, low output resistance, unity voltage gain and a high current gain. It is a voltage buffer, not a current buffer.
What is Darlington emitter follower?
A darlington emitter follower is two transistors operating as one. In other words, a pair of bipolar transistors Page 22 combined together to make a single Darlington transistor pair can be regarded as a single transistor with a very high value of β and consequently a high input resistance.
What are the advantages of Darlington transistor as a single package?