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Today: Diodes

Today: Diodes. For the specified V in , the following three output signals V out were observed. The graphs above, from left to right, could have been collected using circuits: 3,4,1 3,4,2 1,4,3 3,2,1 none of the above. K3.

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Today: Diodes

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  1. Today: Diodes

  2. For the specified Vin, the following three output signals Vout were observed. • The graphs above, from left to right, could have been collected using circuits: • 3,4,1 • 3,4,2 • 1,4,3 • 3,2,1 • none of the above

  3. K3 • What is the output voltage when light hits the photodiode and causes current Iin to flow? • 0V • - IinRf • -15V • -15V+IinRf • -15V - IinRf Rf Vout Iin -15V

  4. K1 • Which detector is going to collect more light? • A detector with a radius of 5 cm placed 50 cm from a spherical light source • A detector with a radius of 2.5 cm placed 25 cm from a spherical light source • They will collect the same amount of light

  5. Cost Efficiency Lifetime $1 17 lm/W 750 hrs $3 63 lm/W 8,000 hrs (mercury in bulb) $50 77 lm/W 50,000 hrs

  6. K2 • Which direction is the force on (+) in the depletion region? • Towards p-type • Towards n-type • No force depletion region

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