EE2207 Electronic Devices and Circuits Lab REVISION For all devices you must know the following 1. Semiconductor Structure 2. Number of terminals, number of junctions and terminal names 3. Symbol 4. Other names 5. VI characteristics model graph 6. Applications 7. Parameters Device Semiconductor Structure, symbol N o . o f l a y e r s t e r m i n a l s a n d j u n c t i o n s N o . o f j u n c t i o n s Terminal Names Other descriptions Important applications Diode Two layer, two terminal uni junction (single junction) semiconductor device Anode Cathode 1.Two terminal uni junction device 2.Avalanche breakdown 3.Lightly doped 1.Rectifier 2.Switch Zener Diode Two layer, two terminal uni junction (single junction) semiconductor device Anode Cathode 1.Heavily doped 2.Zener breakdown 1.Voltage control 2.Voltage stabilization Transistor (NPN) (Bipolar junction transistor) Three layer, Three terminal Two junctions Semiconductor device Emitter Base Collector Bipolar Current controlled device 1.Amplification 2.Switching 3.Impedance Matching
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