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Question

Do the Transistors have polarity ?


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Solution

  1. A transistor is a semiconductor device used to amplify electrical signals.
  2. Polarity indicates whether a circuit component is symmetric or not.
  3. A non-polarized component can be considered in any direction.
  4. The Transistors can be connected in only one way.
  5. The NPN transistor always has an arrow pointing out. It is clear that directions and the voltage polarities in PNP's and NPN's are always opposite to each other.
  6. NPN requires a power supply with positive polarity with respect to common terminals, but PNP transistors require a negative power supply.

Therefore, the Transistors have polarity.


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