Analog Electronics
In an OP-amp differentiator

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

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Analog Electronics
In a transistor amplifier, the reverse saturation electric current ICO

  increase linearly with the temperature.
  double for every 10° rise in temperature.
  double for every 5° rise in temperature.
  double for every 1° rise in temperature.

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