UJT (unipolar junction Transistor)

Unipolar junction Transistor:

UJT:-

A Unijunction Transistor after obbreviated as UJT is a three terminal semiconductor switching device.

UJT is operated with emitter junction forward biased.

It exhibits a negative resistance characteristic and hence it can be used as an oscillator.

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What is LDR (LIGHT DEPENDENT RESISTOR)

LDR: LDR is a photo resistor, It work to only light source and when light s increase and LDR resistivity increase .It lights low and resistivity low and LDR is a light dependent resistor. And it is one type resistor. Unit K amper LDR Material: Cadmium sulphide(cds) Lead Sulphide (Pbs) k USES : It is a active sensor . It use automated electronic devices. It use street light,and sun Ray detected solar panel and others.

What is Transistors ?

Ans : Transistor is a three layer semiconductor device consisting of either two n- and one p type layers of material. The former is called and n-p-n transistor, and the two p- type and one n type layers of material is called p-n-p transistor. Types of transistors i) Bipolar Junction Transistor (BJT) ii) Unipolar Junction Transistor (UJT)

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