Carbon composition variable resistor, Physics

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.

 

 

Posted Date: 7/9/2012 5:15:45 AM | Location : United States







Related Discussions:- Carbon composition variable resistor, Assignment Help, Ask Question on Carbon composition variable resistor, Get Answer, Expert's Help, Carbon composition variable resistor Discussions

Write discussion on Carbon composition variable resistor
Your posts are moderated
Related Questions
Characteristics of Resistance in parallel: Different amount of current passing by each resistance. i.e. I = I1 + I2 + I3 + I4 ........ The potential difference across every

how do we see light?

Electromagnetism: A temporary magnet formed by winding a coil of insulated copper wire around a piece of shift iron is known as electromagnet. When current is passed it behaves

Q. A light of wavelength 6000 0 A falls normally on a thin air film, 6 dark fringes are seen between two points. Compute the thickness of the film. 2μt = nλ Thickness of t

What are bare fibers? It used mostly with PMMA fibers and refers to the optics which have no external protection sheath.

The total number of neutrons in dipositive zinc ions with mass number 70 is: (1) 34 (2) 40 (3) 36 (4) 38 Ans:40

If the speed of light were smaller than it is, would relativistic phenomena be more or less conspicuous than they are now? All else being similar, involving the rates of the ch

your dog is running around the grass in your backyard.he undergoes successive displacement 3.50 m. on south,8.20 m northeast, and 15.0 m west.what is the resultant displacement?

Examples of like and unlike parallel forces?

1.  Describe the process of diffusion in cells (not more than 2 pages).  2.  Derive the equation for Fick's second law. 3.  Draw a typical FRAP curve and explain its differen