Unit 3: Transistor Oscillators and FET and UJT: Transistor oscillator Classifications Situation for oscillations (Barkhausen qualifying criterion) Common form of LC osciIlator Hartley Oscillator CoIpitts Oscillator RC Phase shift oscillator, Crystal oscillator.Field Effect Transistor Construction Working basic principle of FET Difference between FET and BJT Features of FET Applications FET amplifier(Common source amp).Uni Junction Transistor Design Equivalent outlet Operation Features UJT as a relaxation oscillator Device 4: SCR, TRIAC, DIAC, MOSFET: SCR Intro Functioning Two transistor example of SCR VI Features SCR as a switch, Controlled rectifier Specifications.
TRIAC Simple working concept Characteristics Velocity control of fan making use of DIAC and TRIAC. DIAC Structure working features DIAC as bi-directional switch. Device 5: Opto Electronics Gadgets and say framing circuits: LDR, Directed, 7 Portion Brought, LCD, Opto coupIer, Opto interrupter lnfrared transmitter and recipient - Laser diode(Basic therapy) Solar cell Increase Image diode - Picture transistor. Clipper, Clamper Voltage doubIer, Astable multivibrator, MonostabIe and Bistable MuItivibrators using Transistor Schmitt Cause. Text Books: Eelctronic Devices ánd Circuits by Boylstead, Táta McGraw Distribution. Inductors Fixed and Adjustable Factors influencing the inductance Applications Switch Switch function Forms OnOff Push to ON Force to Off SPST SPDT Exchange (Building details not required), Limitation Switch. Rectifier: Intro Classification of Rectifiers Half Influx Rectifier Total Influx Rectifier Bridge Rectifier Efficiency Ripple element Applications Filters Chemical, LC and PI Filters. Device 5: LDR, LED, 7 portion Directed, LCD, Opto coupIer, Opto interrupter lnfrared transmitter and Receiver Laser diode (simple therapy) Solar energy cell Increase Photodiode Photo transistor. Diode dog clipper Varieties clamper circuits making use of diode Voltage doubIer, Astable, Monostable ánd Bistable operations using Transistor.
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