Darlington Introduction
The Darlington tube is the two triodes connected together, the polarity only recognizes the front triode. The specific connection method is as follows. Take two transistors of the same polarity as an example. The front triode collector is connected to the rear triode collector, and the front triode emitter is connected to the rear triode base. The front triode power is generally smaller than the rear triode. The triode base is extremely Darlington's base pole, and the rear triode emits an extremely Darlington tube emitter. The usage is the same as the triode, and the amplification factor is the product of the amplification of the two transistors.