Diode compensation for change in base to transmitter voltage

Q.  What are the consequences of diode compensation for the change in base-to-emitter voltage (VBE) due to temperature?
- Published on 23 Sep 15

a. Temperature compensation takes place by variation in forward voltage (VF)
b. Collector current become insensitive to the change in base-to-emitter voltage (VBE)
c. Both a and b
d. None of the above

ANSWER: Both a and b

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    Discussion

  • Satyawati   -Posted on 25 Sep 15
    In some of the negative feedback circuits, the amplification level of AC signals gets ablated suddenly. Since it becomes difficult for the circuits to tolerate the loss of signals, it is essential to reduce the drift in an operating point by means of compensation and stabilization.
    Compensation techniques include diode compensation, bias compensation using thermistor, sensistor & so on. They play a major role in providing maximum bias in addition to the thermal stabilization to the circuits.

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