Semiconductor Devices
- 1. Semiconductor Devices By Rajesh Kumar
- 2. Introduction
- 3. Types of Semiconductor Devices
- 4. Diode
- 5. Forward & Reverse Bias
- 6. Transistor
- 10. Unit which consists lagely or wholly,of semiconductor materials which can perform useful function in electronic apparatus & solid state research.
- 11. Ex:p-n jun diode,transistros,IC's and etc.
- 12. Types of Semiconductors There are two types of Semiconductors
- 16. Ex:Si,Ge etc
- 17. Extrinsic Semiconductors: Ex:p-type and n-type
- 18. DIODE Diode is device with two electrodes.
- 19. A p-n juncion diode is a two terminal device made up of semiconductor crystal.
- 20. P-N junction diode + - P-n junction diode ckt symbol
- 21. Forward Bias Resistance is very small + - mA Depletion Layer B p n P-n junction-Forward Bias
- 22. Reverse Bias Resistance is very high
- 23. Conduction is due to thermal agitation. Depletion Layer B + - p n MA P-n junction-Reverse Bias
- 24. Transistors Invented in 1948
- 25. A transistor is a semiconductor device used to amplify and switch electronic signal.
- 26. Consist of two p-n junctions back to back
- 28. 1)Emitter
- 29. 2)Base
- 30. 3)Collector
- 31. Base is made up of P-type
- 32. Current conduction is mainly due to holes P-N-P Transistor p p p p n Ckt symbol of p-n-p transistor E B C p-n-p transistor
- 33. N-P-N Transistor Base is made up of p-type.
- 34. Current conduction is mainly due to electrons. E C B n n p Ckt symbol of n-p-n transistor n-p-n transistor
- 35. Advantages Used in microcircuits.
- 38. Swithches turn on&off with the use of transistor.
- 39. ANY QURIES? Can two diodes combined back to back as shown in
- 40. fig to form a transistor? P N N P
- 41. THANK YOU