![]() ![]() It was made by researchers John Bardeen & Walter Houser Brattain at Bell Laboratories in December 1947. The First Transistor: Point-contact transistor A point-contact transistor was the first type of solid state electronic transistor ever constructed. In digital circuits they function as electrical switches, including logic gates, random access memory (RAM), and microprocessors.In analog circuits, transistors are used in amplifiers and linear regulated power supplies. ![]() The physics of "transistor action" is quite different for the BJT and FET.Transistors have 3 terminals where the application of current (BJT) or voltage (FET) to the input terminal increases the amount of charge in the active region.bipolar junction transistors(BJTs) and.Hutagalung School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia Bipolar Junction Transistors (BJT) EBB424E Dr. ![]()
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