Bipolar transistor KT-3102 - Design of an audio frequency amplifier with and without transformer

Reading time: <1 minut Bipolar transistors are made from germanium, silicon and gallium arsenide. The most widely used is germanium and silicon. Technological methods make it possible to manufacture the transistor in such a way as to meet to some extent the requirements for the maximum permissible parameters.

Field effect transistors - Advantages over bipolar transistors

Reading time: <1 minut Unlike bipolar transistors, field effect transistors use only one type of charge carrier (electrons or gaps) that flows through a semiconductor channel. If in bipolar transistors the conductivity control is achieved by varying a current between the emitter and the base, in field effect transistors the conductivity control is achieved by varying a voltage applied to a control electrode called gate or gate (with a role similar to the TB base).