Question: Using one NPN transistor, one PNP transistor, one general purpose diode, one LED and two resistors, design a constant current source that drives a

Using one NPN transistor, one PNP transistor, one general purpose diode, one

Using one NPN transistor, one PNP transistor, one general purpose diode, one LED and two resistors, design a constant current source that drives a constant current of 20 mA through the LED. The circuit is supplied with 10V from an ideal voltage source. The general purpose diode cannot handle more than 10 mA. You MUST use all six components given. Calculate the resistance of the two resistors. The transistors and the diode use Silicon (VT = 0.7V). Both transistors have B = 500.

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