Hello
I am trying to figure out the input capacitor to an emitter grounded amplifier that is biased by a voltage divider,with a Rc and Re resistors.The Re is not bypassed.What I trying to do is use 60 hz as a testing freuency for the amplifier.I am using a transformer that has a output of 12acv.I had to place two resistors in series to get a small voltage across the second resistor which is about 150 ohms that had a drop of about .009 volts. Iam assuming that the series resistors that is the output of the ac transfomer would be the generator resistance.The input to the grounded emitter which would be according to forum information that Rin (tot) =R1|| R2|| re'.How would I calculate for the input capacitor to the transistor? Also what about the D.C. input resistance,how is that used for the calculation.
I am trying to figure out the input capacitor to an emitter grounded amplifier that is biased by a voltage divider,with a Rc and Re resistors.The Re is not bypassed.What I trying to do is use 60 hz as a testing freuency for the amplifier.I am using a transformer that has a output of 12acv.I had to place two resistors in series to get a small voltage across the second resistor which is about 150 ohms that had a drop of about .009 volts. Iam assuming that the series resistors that is the output of the ac transfomer would be the generator resistance.The input to the grounded emitter which would be according to forum information that Rin (tot) =R1|| R2|| re'.How would I calculate for the input capacitor to the transistor? Also what about the D.C. input resistance,how is that used for the calculation.