Light dependent resistor, Physics

Assignment Help:

 

These resistors change their resistance with variations of incident light energy.

MANUFACTURING:

Cadmium sulphide is obtained in a highly pure state. By adding special materials, it is forms in moulds like disc. It is heated at high temperatures to remove gases. Electrodes are formed by evaporating metal in vacuumed. Leads are connected and put in plastic case with synthetic resins.

SPECIFICATIONS:

R in dark > 10 mega ohms measured after 3 minutes after darks condition.

R in light 100 to 300 ohms at 1000 lax.

Recovery > 200 kilo ohms/sec rise in resistance with in light.

Capacitance < 10pf

Permissible voltage 100 volts peak.

APPLICATIONS: In dark its resistance is high and in light it acts as a conductor. It is used in (1) proximity switches; (2) automatic brightness and contrast control in TV; (3) light failure alarms.

 

 

 

 

 


Related Discussions:- Light dependent resistor

Aac (all aluminium standard conductors), AAC (All Aluminium standard Conduc...

AAC (All Aluminium standard Conductors) Standard conductors are the conductors made of thin wires of small cross-section and bunched together. They are made by twisting the wir

What is dual character of light, Q. What is dual character of light? L...

Q. What is dual character of light? Light behaves as particles of energy in the higher energy region as well as as waves in the lower energy region.

Point out the direction of the current, Point out the direction of the curr...

Point out the direction of the current if any induced to flow in the coil by the changing magnetic field. (Depicted is a view of the coil from the side. Toward the top of the displ

What is heat?, What is Heat? We now have several scales for measuring tem...

What is Heat? We now have several scales for measuring temperature, but first let's ask, “Is temperature the same as heat?” If I add heat to a pot of water, the water's temperatu

Determine the distance in parabolic motion, A sky diver in free fall reache...

A sky diver in free fall reaches a speed of 65.2 m/s when she opens her parachute. The parachute quickly slows her down to 7.30 m/s at a constant rate of 29.4 m/s 2 . During th

Describe binding energy, Describe binding energy. How does binding energy p...

Describe binding energy. How does binding energy per nucleon vary with mass number? What is it significance.

Fiber optics manufacture and fiber optics system manufacture, What is the d...

What is the difference among a fiber optics manufacture and a fiber optics system manufacture? It is a question that would sound silly in other industries although not in this

What is the velocity of the train, A train moving with a velocity of 51 m/s...

A train moving with a velocity of 51 m/s east undergoes an acceleration of -2.3 m/s 2 as it approaches a town. What is the velocity of the train 5.2 s after it has begun to decele

Steel, Steel: Steel contains iron with a small percentage of carbon added ...

Steel: Steel contains iron with a small percentage of carbon added it. Iron itself is not very strong but the additions of small percentage of carbon in it decrease the ductility

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd