Mind mup devices CLASS XI-XII PHYSICS STATE BOARD

1. DEVICES
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2. Overview
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3. LED
• Construction and working
• I-V Characteristics
• Advantages
• Applications
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4. Ocsillator ( Negative-feedback amplifier)
• Block diagram
• Barkhausen criterion
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5. Photodiode
• Construction and working
• Uses
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6. Junction diode
• Biasing and I-V characteristics
• Forward bias
• Threshold voltage
• Reverse bias
• Reverse saturation current
• Peak Inverse Voltage
• Use as rectifier
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7. Solar cell
• Construction and Working
• I-V characteristics
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8. Zener diode
• Use
• Voltage regulator (working)
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9. Junction Transistor
• Use as
• Amplifier
• Switch
• Working (action)
• Current gains
• CB
• Alpha (dc)
• CE
• Beta (dc)
• CE Characteristics
• Input ( Base)
• Output ( Collector)
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