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.

LDR PHOTO

LDR STUCTURE

LDR two terminal device

Comments

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.

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)

Technical Electronic data

Search This Blog