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

Homework help, Describe an actual situation that would give rise to the fre...

Describe an actual situation that would give rise to the free body diagram

Calculate the electric displacement in the dielectric, The plates of a para...

The plates of a parallel plate capacitor are 5 mm apart and 2 m 2 in area. The plates are in vacuum. A potential difference of 10000 Volts is applied across the capacitor. Calcu

Define about the venting, Define about the Venting? A thermally insulat...

Define about the Venting? A thermally insulated chamber is pumped down to an extremely low pressure. At a few point, the chamber is vented thus that it is filled with air up to

Write down the electromagnetic wave equation, Write down the electromagneti...

Write down the electromagnetic wave equation for free space in terms of electric field.

Polarization, Explanation construction and working of Nicol prism?

Explanation construction and working of Nicol prism?

Interference and Diffraction, What is the exact distinction between Diffra...

What is the exact distinction between Diffraction and Interference?

Displacement with constant acceleration, In 1993, Ileana Salvador of Italy ...

In 1993, Ileana Salvador of Italy walked 3.0 km in under 12.0 min. Suppose that during 115 m of her walk Slavador is observed to steadily increase her speed from 4.20 m/s to 5.00 m

Calculate the direction of the ball move - collision, A 77.0-kg woman is wa...

A 77.0-kg woman is walking 0.10 m/s east in the gym. A man throws a 15.0-kg ball south and accidentally hits the woman. The woman and the ball move together with a velocity

Calorimatery, Calorimetry is the act of calculating the heat of chemical re...

Calorimetry is the act of calculating the heat of chemical reactions or physical changes, or the science of making such measurements. Calorimetry is performed with a calorimeter. T

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