Analog Electronics
The value of total collector electric current in a CB circuit is

  IC = αIE.
  IC = αIE + ICO.
  IC = βIE.
  IC = αIE - ICO.

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Analog Electronics
The magnitude of electric current ICBO

  is generally greater in silicon than in germanium transistor.
  depends largely upon the emitter doping.
  depends largely upon emitter-base junction base potential.
  increases with the increase in temperature.

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