Zener diode

Zener diode is like a normal diode, but instead of being destroyed by a big reverse voltage, it lets electricity through. The voltage needed for this is called the breakdown voltage or Zener voltage.[1] Because it can be built with a known breakdown voltage, it can be used to accurately measure voltage.

Zener diode
Switching and symbol (resistor and zener diode)

References
Wikimedia Commons has media related to Zener diodes.
  1. "Zener Diode". Archived from the original on 3 January 2013. Retrieved 31 May 2012.


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