A certain red LED has a maximum current rating of 35 mA, and if this value is exceeded
Chapter 5, Problem 74(choose chapter or problem)
A certain red LED has a maximum current rating of 35 mA, and if this value is exceeded, overheating and catastrophic failure will result. The resistance of the LED is a nonlinear function of its current, but the manufacturer warrants a minimum resistance of \(47\ \Omega\) and a maximum resistance of \(117\ \Omega\). Only 9 V batteries are available to power the LED. Design a suitable circuit to deliver the maximum power possible to the LED without damaging it. Use only combinations of the standard resistor values given in the inside front cover.
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