Analog Electronics
Which of the following is not associated with a p-n junction

Charge storage capacitance
Channel length modulation
Depletion capacitance
Junction capacitance

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Analog Electronics
In an OP-amp differentiator

Polarity of input and output is the same
Output occurs when input is finite and constant
The amplitude of output is proportional to input
The amplitude of output is proportional to rate of change of input

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Analog Electronics
Optocouplers combine

  Infrared light emitting diode and a silicon photo transistor.
 SITs and BJTs.
 IGBTs and MOSFETs.
 Power transistor and silicon transistor.

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