Design. Let's say we want to power up an LED (diode D2) by placing it between Rc and the transistor. Assume that the forward voltage of the LED is 0.7V. Assume Vce,sat = 0.2V. 'R_c Vcc -Vd D2 5 Vce R_b Q1 27k 2N3904 Vi 4 +

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