ast --5v va Sook lok 2l01 0,1k € L 250k For all transistors f=100 and √BE = 10,71V a) What is the function of Q3 and Q4 in the circult b) Determine the required V₁ in order to make voltage Q₁ is ON 12V C) Determine the collector Currents, Collector seminter and regions Voltages States of Q₁ and Q₂ for V₁ =40 and 8V

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BJT (Bipolar Junction Transistor)

A BJT is a semiconductor device with 3 terminals that consist of a p-n junction diode that can amplify the signal or current. It is a current-controlled device. The three BJT terminals are base, collector, and emitter. The BJT works with the charge carrier, the two type of carriers in the BJT are holes and electrons, the charge carriers flow by the process of recombination. The signal to be amplifier is generally given as the input at the base terminal and an amplified form of it is available at the collector terminal.