Carbon composition variable resistor, Physics

Assignment Help:

MANUFACTURING: Two processes are used manufacturing.

Coated film: A mixture of carbon, filler and binder is coated on a ring of insulating material. The surface of the film is processed to minimize abrasion of the film by the sliding contact tap. The contact is of brass or phosphor bronze. The contact is sparing loaded against element.

SPECIFICATIONS

Range of values                                                100 ohms to 10 mega ohm

Power rating                                                      1/2W to 2.5W

Tolerance                                                         20% for 100 ohms to 1 mega ohm

                                                                       30% above 1 mega ohm

Voltage coefficient                                             0.005% volt

APPLICATIONS: These are used as present potentiometer in TV, in brightness and contrast control, radio and measuring instruments.

 

 


Related Discussions:- Carbon composition variable resistor

What are spatial effects, What are spatial effects? Representations of ...

What are spatial effects? Representations of shooting stars, nebulas, comets and others, made with frequently thousands of individual animation illuminator and fibers.

Light, what is power of lens?

what is power of lens?

Define electric field, Electric Field: The electrical field because of ...

Electric Field: The electrical field because of a charge can be described as the space around the charge.

Explain shell type transformers, Shell type transformers .  In this type of...

Shell type transformers .  In this type of transformer the iron core surrounds the copper windings. The core is in the shape of numeral 8.  The entire flux passes by the central pa

Combined field due to the earth and a bar magnet, Where do you find the nul...

Where do you find the null points in the combined field due to the earth and a bar magnet, when i) the N-pole of the magnet is taken towards the north of the earth, ii) the

Determine the load power factor, Two wattmeters indicate 10 kW and 3 kW res...

Two wattmeters indicate 10 kW and 3 kW respectively when linked to measure the input power to a 3-phase balanced load, the reverse switch being operated on the meter showing the 3k

Explain about refracting telescopes, Refracting telescopes, if uncorrected,...

Refracting telescopes, if uncorrected, suffer from chromatic aberration.  Chromatic aberration occurs because: a)  red light is focused more strongly than blue light b)

Explain line emission spectrum, (i) It having of dissimilar bright lines. ...

(i) It having of dissimilar bright lines. (ii) It is given by an excited source in atomic state. (iii)E.g. Spectrum of excited helium, mercury vapours sodium vapours or atomi

Aiming at the monkey slow, Aiming at the Monkey Slow Assume a zookeeper...

Aiming at the Monkey Slow Assume a zookeeper must shoot a banana from banana cannon to a monkey who hangs from the limb of a tree. This particular monkey has a habit of droppin

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