The bipolar transistor inverter circuit demonstrated below uses there a supply voltage of VCC = 5V.
Calculate the given:
(a) The base overdrive factor when RB = 10kO, RC = 1.5kO and ßF = 25.
(b) The value of RB needed to keep a base overdrive factor of s = 3 while RC = 2.5kO and ßF = 40.
(c) The minimum value of ßF needed to guarantee an overdrive factor of s = 5 while RC = 500O as well as RB = 20kO.
1260_bipolar transistor inverter circuit.png