Air capacitor, Physics

Assignment Help:

Air dielectric capacitors are used mainly as laboratory standards of capacitance for measurement purposes. The insulating material used in these capacitances is fused silica and the whole capacitor is shielded in the metal case. They are very accurate (0.01 to 0.02%) but their size is large. The construction is parallel plate or concentric cylinder type. Plates are circular, square or triangular in shape. These metallic plates are insulated from each other and separated by air.

Specifications

Range of values                                                                     50pf to 10000pf

Tolerance                                                                     0.01 to 0.05%

Temperature coefficient                                                                     10ppm/0C

Applications: As residual inductance and resistance is low, they can be used at high radio frequencies. Also can be used a high voltage laboratory standards.

 

 


Related Discussions:- Air capacitor

Magnetic force on a moving charge, Magnetic force on a moving charge Oers...

Magnetic force on a moving charge Oersted also discovered that anytime a charge is moving in an area where a magnetic field exists, it experiences a force which is sometimes call

The mass of a mol of proton and electron, The mass of a mol of proton and e...

The mass of a mol of proton and electron is: (1) 6.023x 10 23 g (2) 1.008g and 0.55mg (3) 9.1x 10 -28 kg         (4) 2gm Ans: (2) 1.008g  and 0.55mg

What is the echo of the launched pulse, What is the echo of the launched pu...

What is the echo of the launched pulse? Any discontinuity into the medium of propagation of an ultrasonic pulse provides rise to back-reflection that travels back to the input

Dielectric loss, Electrical Properties of Dielectric Material A loss ...

Electrical Properties of Dielectric Material A loss of energy which eventually produces a rise in temperature of a dielectric placed in an alternating electric field is calle

Hole passing by the centre of earth, What will happen when a ball is droppe...

What will happen when a ball is dropped in a hole passing by the centre of earth through out diametrically? Ans) The ball will implement simple harmonic motion centered at the ce

Electricitye.., what is the use of muslin bag in a dry cell

what is the use of muslin bag in a dry cell

Uniform Motion, It normally takes maria 10 minutes to travel 5.0 miles to U...

It normally takes maria 10 minutes to travel 5.0 miles to UTPA along a straight road. Maria leaves home 15 minutes before class begins. Delays caused by a broken traffic light slow

Honors, an orchestra tunes up for the big concert by playing an A, WHICH RE...

an orchestra tunes up for the big concert by playing an A, WHICH RESOUNDS WITH A FUNDAMENTAL FREQUWNCY OF 440HZ FIND THE SECOND AND TIRD HARMONICS OF THIS NOTE

Magnetism, Differentiate between teporary and permanent magnet

Differentiate between teporary and permanent magnet

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