Hello! When you look this topic http://www.allaboutcircuits.com/vol_3/chpt_4/8.html and this circuit there is voltage divider of R3 and R2 to keep the transistor open all the time. But why it is so when I simulate this circuit without R3 and there is only R2, then circuit still will work normally(will amplify all AC) When you look my attachment then there is circuit with amplification of 10x and this don't have this one voltage divider resistor. So why I should put there one, when the circuit will work anyway fine? And why does it work?