Polystyrene film capacitors, Physics

Assignment Help:

Polystyrene film is extruded flat and free from pin-holes. Film is made from polystyrene granules by extruding heated tube of polymer which is then spread out and stretched state. Heat treatment is given above relaxation temperature after winding film with aluminium foil electrodes. This ensures that the film contracts firmly into contact with electrodes and voids are eliminated. During manufacturing, it is necessary to use dust proof room.

Specifications

Range of values                                                                            up to 1μf

Power factor                                                                     0.0002

Operating voltage                                                                     100V

Temperature coefficient                                                                     -100 to -200ppm/0C

Applications:

(1) Radio frequency tuned circuit.

(2) As storage capacitors in digital equipment.

 (3) In measuring equipment of ionization current of radioactive materials.

(4) In dosage measurement in X-ray therapy.

(5) In long time constant circuits.


Related Discussions:- Polystyrene film capacitors

Explain bi-prism experiment, Explain why a narrow slit is used in case of B...

Explain why a narrow slit is used in case of Bi-prism experiment where as an extended source is used in Newton's rings experiment?

How many amps of current in 150-watt 120 volt light bulb, Used normally, a ...

Used normally, a 150-watt, 120 volt light bulb requires how many amps of current? Ans: Used generally, a 150-watt, 120 volt light bulb needs 1.25 amps.

Scattering, derive an expression for the total cross section for the scatte...

derive an expression for the total cross section for the scattering of light by a polorisable molecule in term of the incedent wave length.

Types of collision, Elastic collision : A collision is known as elastic whe...

Elastic collision : A collision is known as elastic when kinetic energy is also conserved along with the linear momentum. There is no transformation or loss of kinetic energy in th

Calculate the reaction gibbs energy, Under standard state conditions at 37 ...

Under standard state conditions at 37 o C, a biochemical reaction :             A ↔ B + C has an equilibrium constant K = 0.0422  mol/dm 3 . (i) Calculate the standard

Quantum., what is quatum number

what is quatum number

Who first theoretically predicted the existence of positron, Who first theo...

Who first theoretically predicted the existence of the positron, a positively charged electron?  He received the Nobel Prize in Physics in 1933. Ans: (Paul Adrien M

Explain about the regulated voltage, Determine range of V for obtaining a r...

Determine range of V for obtaining a regulated voltage demonstrated in Figure. For the data     0 ≤ I L ≤ 4 mA 2 ≤ I Z ≤ 8 mA Ans: Determination of range of V for

Electrostatics, The neutral point in an electrostatic field appears to have...

The neutral point in an electrostatic field appears to have a resultant potential. why is this so?

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