Simple Transistor Amplifier

First decide gain (positive number) and operating point:
A= (A = R3/R4)
Vcc= volt
Ic= amp (Ve = Ic*R4)
Now compute R3, R4 and Vc:
R3= ohm
R4= ohm
Vc= V
Possibly adjust R3, R4 and/or Vc and compute Ve & Vb:
Ve= volt
Vb= volt 
You may now compute R1 and R2 with the
Resistor Divider utility using Vcc and Vb
as the voltages.
© 1999 Tom Ahola