DIGITAL DEVELOPMENT IN TEACHING TECHNICAL SUBJECTS TO STUDENTS OF TECHNOLOGICAL DIRECTION BASED ON THE APPLICATION OF TECHNOLOGY
Journal Title: International scientific journal Science and Innovation - Year 2023, Vol 2, Issue 5
Abstract
A bipolar transistor is a semiconductor device commonly used for amplification. The device can amplify analog or digital signals. It can also switch DC or function as an oscillator. Physically, a bipolar transistor amplifies current, but it can be connected in circuits designed to amplify voltage or power. In the diode tutorials we saw that simple diodes are made up from two pieces of semiconductor material to form a simple pn-junction and we also learnt about their properties and characteristics. If we now join together two individual signal diodes back-to-back, this will give us Two PN-junctions connected together in series that share a common P or N terminal. The fusion of these two diodes produces three layers, two junction, three terminal device forming the basis of a Bipolar Junction Transistor, or BJT for short. Transistors are three terminal active devices made from different semiconductor materials that can act as either an insulator or a conductor by the application of a small signal voltage. The transistor’s ability to change between these two states enables it to have two basic functions: “switching” (digital electronics) or “amplification” (analogue electronics). Then bipolar transistors have the ability to operate within three different regions: Active Region – the transistor operates as an amplifier Saturation – the transistor is “Fully-ON” operating as a switch Cut-off – the transistor is “Fully-OFF” operating as a switch
Authors and Affiliations
Mavlonov Abdulla Xolmat ugli
Keywords
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