Hi,
1. It is explained in that website that "The capacitor and the 110k and 10k resistors bias the transistor's base at about 1.7 V" I understand how to calculate resistors in series but I can't get the value of 1.7v, how to do this
calculation ?
The value of Vb = Vsupply * [10k/(10k+110k)] = 1.66V [ its a ratio of the two series resistors]
2. Why do we need to put the 1K resistor at the emitter going to ground ?. I can understand the need and use of resistor near the input but why near ground ?
The 1K is emitter feedback, with a 10K collector resistor the Gain of the Stage is ~ 10K/1K =10
3. Capacitor is used mostly for storage of enery and in the case of this circuit I believe that the 5uF capacitor used is to make sure that the output is stable (no spike)
On the Collector of the transistor is a DC voltage, which needs to be blocked from appearing across the Load [ the 1meg resistor] . The 5uF only allows the AC signal thru to the 1meg
but I failed to understand why we need to use the
1M resistor near the capacitor ?
Its just a simulated load
Thanks for your kind help