Physical representations of the two types of BJTs are shown in Figure (b) and (c). The three regions are called emitter, base, and collector. Transistor Structure The BJT (bipolar junction transistor) is constructed with three doped semiconductor regions separated by two pn junctions, as shown in Figure (a).
Small changes in base-emitter current yields a large change in collector-current. Note that the emitter leg serves as a conductor for both circuits.The amount of current flow in the base-emitter circuit controls the amount of current that flows in the collector circuit. ET212 Electronics – BJTsFloyd 3īasic Transistor Operation Look at this one circuit as two separate circuits, the base-emitter(left side) circuit and the collector-emitter(right side) circuit. Let’s first consider its operation in a more simple view as a current controlling device. Introduction A transistor is a device which can be used as either an amplifier or a switch. Amplifier or Switch Key Words: BJT, Bias, Transistor, Amplifier, Switch ET212 Electronics – BJTsFloyd 2.Parameters, Characteristics and Transistor Circuits.Introduction to Bipolar Junction Transistor (BJT).I hope this module is helpful to enhance our students’ academic performance. I would like to thank the Department of Electrical and Telecommunications Engineering Technology of NYCCT for giving me support to commence and complete this module. Bipolar Junction Transistors ET 212 Electronics Electrical and Telecommunication Engineering Technology Professor JangĪcknowledgement I want to express my gratitude to Prentice Hall giving me the permission to use instructor’s material for developing this module.
0 kommentar(er)
