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Q Explain about 'Darlington Amplifier'?
DARLINGTON AMPLIFIER : A CC stage followed by another CC stage has an input resistance of about (b + 1) 2 times the emitter resistance of the second stage. More precisely, using the b transform, it is
If RE1 is removed, the second term is about b2 times RE2. Furthermore, if the collectors are connected together, the result is a Darlington stage, as shown below.
This stage can be viewed as a "Darlington transistor" because it has three terminals and an equivalent b of about b2 . Darlington BJTs can be used in any of the three BJT configurations.
Q. What do you mean by interference? An information-bearing signal often becomes contaminated by externally generated interference and noise and/or by internally generated nois
Q. What is Pinch - off voltage? The reverse bias is relatively large near the source. As a result, the depletion region intrudes into the channel near the drain, and the effec
short circuit protection
what are the electrical characteristics of TRIAC?
Explain the significance of V number. Ans: V number or V parameter or normalized cutoff frequency is one of the parameter which is used to calculate the maximum number o
Transistor as an amplifier: Figure: Amplifier circuit, standard common-emitter configuration. The common-emitter amplifier is planned that is why a small change i
Q. Briefly explain about Wye-delta transformation? Certain network configurations cannot be reduced or simplified by series-parallel combinations alone. In some such cases wye-
Determine the load - Thevenins Equivalent Circuit: Determine the load for which the source shall transfer the maximum power if load is connected across the terminal A and B, u
Slow-rise, fast-decay
Use Thevenin's Theorem, find the current flow by resistor R=10Ω.
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