A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. In contrast, a unipolar transistor...

An insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily forming an electronic switch. It was developed to...

field-effect transistor, or may have two kinds of charge carriers in bipolar junction transistor devices. Compared with the vacuum tube, transistors are generally...

A heterojunction bipolar transistor (HBT) is a type of bipolar junction transistor (BJT) that uses different semiconductor materials for the emitter and...

Bipolar transistors must be properly biased to operate correctly. In circuits made with individual devices (discrete circuits), biasing networks consisting...

point-contact transistor was commercialized and sold by Western Electric and others but was eventually superseded by the bipolar junction transistor, which was...

instead inventing the point-contact transistor in 1947, which was followed by Shockley's bipolar junction transistor in 1948. The first FET device to be...

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...

Transistor–transistor logic (TTL) is a logic family built from bipolar junction transistors. Its name signifies that transistors perform both the logic...

higher frequencies than a bipolar transistor, but is limited to low voltage applications. The Insulated-gate bipolar transistor (IGBT) was developed in...