Materials:
- select two matched CdS photoresistors
- select two complementary R2 potentiometers
- 2 - TIP 102 power transistors
- SIP sockets for photresistors and potentiometers
- 1 - 9 VDC battery
- 2 - DC motors
- 2 - DPDT switches
- solid core copper wire
- small perf board for the chassis
- snap ties to mount motors
- wheels (optional, make them small)
| Report:
- measure and record the resistance of the CdS
photoresistors
- in total darkness, and
- in full light
- compute Vout estimate given your circuit in both
light and dark conditions
- measure Rmotor
- demonstrate your photovore
- evaluate its performance, are there obvious
improvements you can consider?
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