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Current flow in amplifier

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akhilpaulv

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Hi all,

In a case of Amplifier design, for AC blocking we add inductor in collector pin of the transistor. The basic Amplifier network is given below image. When voltage at the base node changes the current through the transistor is also changes, which means current pumps through the PDN is also equal to the input frequency of the transistor. At the input frequency the inductor is act like a open circuit. My question is, The current i has the same frequency of input signal , Then how can the current i pass through the inductor. Do inductor only blocking change in voltage ? Why ?
new circuit.PNG
-Akhil
 

You can consider the current in L1 to be constant. This means that the sum of the currents in T1 and R1 is constant.
A current change in T1 will lead to the same change in R1 , but with opposite sign.
 
Read a bit amplifiers' basics first.This amplifier does not work..
 

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