The Long-Tailed Pair (LTP) Circuit

Do you know about The Long-Tailed Pair (LTP) Circuit ? If so discuss about it.

Darlington pair

• The Darlington pair is basically a combination of two bipolar transistors connected as shown in Figure below.
• This circuit is used for amplifying currents, i.e., the amplified current from the first transistor is further amplified by the second transistor.
• Needless to say, this transistor combination exhibits a much higher current gain than if only one transistor were used.