XII - Ch# 12 : Electrostatics :Solved Numericals

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COMMON COLLECTOR CONFIGURATION OF A TRANSISTOR

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COMMON COLLECTOR CONNECTION

In  this  configuration  the  input  is  applied  between the  base  and  the  collector and  the  output  is  taken  from  the  collector  and  the  emitter.  Here  the  collector  is common to both the input and the output circuits as shown in Fig.

  Common Collector Transistor Circuit

In  common  collector  configuration  the  input  current  is  the  base current  IB  and  the output current is the emitter current IE. The ratio of change in emitter current to the  change in the base current is called current amplification factor.

It is represented by


COMMON COLLECTOR CIRCUIT

A test  circuit  for determining the  static characteristic  of an NPN transistor is shown in Fig. In this circuit the collector is common to both the input and the output circuits.   To   measure   the   base   and   the   emitter   currents,   milli   ammeters   are connected in series with the base and the emitter circuits. Voltmeters are connected   across the input an…
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Give difference between inertial and non inertial frames of references?

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Inertial Frame of Reference:
Inertial frames are ones which are at rest or moving with uniform velocity with respect to fixed stars. For an observer in such a frame of reference Newton's second law of motion is valid.
Ex: A train moving with uniform velocity is an inertial frame. Non Inertial Frame of Reference: A non inertial frame is one which is accelerated ( linearly or due to rotation) with respect to fixed stars.
Newton's second law of motion is not valid in such a frame of reference, unless we introduce a force called pseudo - force.

Ex: A freely falling elevator may be taken as a non inertial frame.
For Example:
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