nicksydney
New Member
Hi,
I'm in the middle of learning about RC Circuit and one of the thing I'm learning is about Amplifier Circuit. I'm reading through this website and at the moment going through the 'The Common Emitter Amplifier Circuit' section. I have few questions based on the simulation from this website
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 ?
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 ?
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) but I failed to understand why we need to use the
1M resistor near the capacitor ?
Thanks for your kind help
I'm in the middle of learning about RC Circuit and one of the thing I'm learning is about Amplifier Circuit. I'm reading through this website and at the moment going through the 'The Common Emitter Amplifier Circuit' section. I have few questions based on the simulation from this website
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 ?
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 ?
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) but I failed to understand why we need to use the
1M resistor near the capacitor ?
Thanks for your kind help