Essentially; R1 & R2 are a voltage divider providing a rudimentary Vref for the base. With the emitter resistor, it plays a part in the quiescent collector current. that part of the circuit is an emitter follower - the transistor will try to keep Vre at vr1/r2 less Vbe. Since Re is constant; the collector current to maintain the set voltage is also constant.View attachment 137423
Hello everyone,
given me informations are Vcc, Re, Rc Rl Rsig R1 R2, ( ß, Vbe, Vt in transistor).
wanted: 1.mid band gain Vo/Vsig and Vo/Vi.
2.C1 , C2, C3 a 3-dB low freq of fl= 100Hz.
My question is that , is it important r1 and r2 in this circuit for V0/Vsig , Vo/Vi
How can i find Vi ?
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