Analog Electronics
LC oscillators are used for produce a waveform with frequency ranging from

 1 KHz to 1 MHz
 1MHz to 500 MHz
 100 KHz to 500 MHz
 1MHz to 100 GHz

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Analog Electronics
For an NPN transistor in normal bias

  the emitter junction has high resistance.
  only holes cross the collector junction.
  Je is forward biased and Jc is reverse biased.
  only majority carriers cross the collector junction.

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