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Programmable unijunction transistor

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Programmable unijunction transistor
Component typePassive
InventorGeneral Electric[1]
Pin namesanode, gate and cathode
Electronic symbol
Graph of PUT characteristic curve, similar to UJT

Programmable unijunction transistor (PUT) is a three-lead electronic semiconductor device with which is similar in characteristic to unijunction transistor except that it is programmable.[2]

Construction

In construction, Programmable unijunction transistor is similar to Silicon controlled rectifier. It consists of four layers, two p-type layers and two n-type layers in equal proportion.[1]

Applications

  • It is used to trigger Thyristors.
  • It is also used as relaxing oscillator.

References

  1. ^ a b https://www.electroschematics.com/6904/programmable-unijunction-transistor-put-flasher-circuit/
  2. ^ "PUT - Programmable Unijunction Transistor - Working, Construction, Biasing - D&E notes". www.daenotes.com.