ABSTRACT
This chapter provides detail and technical analysis which is required to successfully utilise transistors in a broad range of simple but useful audio circuits. One particular subtype of the bipolar junction transistors class which merits special mention is the Darlington transistor. These devices are bipolar junction transistors with very high gain. The chapter also provides a solid grounding and foundation on which to build a more detailed and in depth understanding for those who may wish to proceed and delve deeper into this particularly rich area of analog audio electronics. Transistors are often used in complementary pairs involving two devices with similar specs but opposite polarities. Junction field effect transistor (JFETs) are made from a strip of one type of semiconductor material with a terminal at each end. The differences between Metal Oxide Semiconductor Field Effect Transistors and JFETs come mainly from the different ways in which the gate terminal is interfaced into the channel between drain and source.
