488 A photoresistor varies from 10 in bright sunlight to 500 k in total darkness. Design...

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4–88 A photoresistor varies from 10 Ω in bright sunlight to 500 kΩ in total darkness. Design a suitable circuit using the photoresistor so that total darkness produces 0 V, while bright sunlight produces −5 V, regardless of the load. You have a 5-V source and a 15-V source to power any OP AMP you may need.

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