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Semiconductor physics
- 1. PHYSICS OF SEMICONDUCTORS PN JUNCTION DIODES AND RESISTORS
- 13. INSULATORS, SEMICONDUCTORS, AND METALS (CONTINUED) Conduction Band Valence Band Conductor Semiconductor Insulator Overlap Band Gap More Band Gap http://speakingtechnology.blogspot.com
- 19. DIFFUSION OF DOPANTS (CONTINUED) Concentration of dopant in surrounding atmosphere kept constant per unit volume Dopant deposited on surface - constant amount per unit area http://speakingtechnology.blogspot.com
- 28. THE P-N JUNCTION Direction of Current http://speakingtechnology.blogspot.com
- 29. DEPLETION LAYER FORMATION The “potential” or voltage across the silicon changes in the depletion region and goes from + in the n region to – in the p region http://speakingtechnology.blogspot.com
- 30. BIASING THE P-N DIODE Forward Bias Applies - voltage to the n region and + voltage to the p region CURRENT! Reverse Bias Applies + voltage to n region and – voltage to p region NO CURRENT DIODES CAN BE CONSIDERED AS SWITCH http://speakingtechnology.blogspot.com
- 34. CURRENT-VOLTAGE CHARACTERISTICS THE IDEAL DIODE Positive voltage yields finite current Negative voltage yields zero current REAL DIODE http://speakingtechnology.blogspot.com
- 35. THE IDEAL DIODE EQUATION http://speakingtechnology.blogspot.com