Valve & digital electronics: thermionic emission, Physics

Assignment Help:

(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current flowing is known as thermion current.

(ii)Thermions have dissimilar velocities.

(iii)This was discovered by Edison

 


Related Discussions:- Valve & digital electronics: thermionic emission

Advantages of d.c. transmission of power, Advantages of D.C. transmission o...

Advantages of D.C. transmission of power  1. It needs only two conductors as compared to three for a.c. transmission. 2. There is not an inductance, capacitance, phase displ

State the applications of JFET, State the Applications of JFET FET is u...

State the Applications of JFET FET is used as a (1)  Buffer amplifier (2)  Low Noise Amplifier (3)  Cascaded Amplifier (4)  Analog Switch (5)  Chopper (6)  Ph

ENERGY CONSERVATION, A UNIFORM ROD OF MASS M, HINGED AT ITS UPPER END, IS R...

A UNIFORM ROD OF MASS M, HINGED AT ITS UPPER END, IS RELEASED FROM REST FROM A HORIZONTAL POSITION. WHEN IT PASSES THROUGH THE VERTICAL POSITION FIND THE FORCE ON THE HINGE.

Calculate the wavelength, If you "bow" a string on a violin you hear a note...

If you "bow" a string on a violin you hear a note with a frequency of 1020 Hz. If the length of the string is about 40cm, what is the "wave" on the string? Draw a diagram to show

Q, #question 1:successive disintegration in nucluer physics

#question 1:successive disintegration in nucluer physics

Cause of difference in length of day and night, Demonstrating the cause of ...

Demonstrating the cause of difference in length of day and night in some places:- Use the similar apparatus as in 6 above. Mark a circle on the ball around its centre to show t

Thermoelectric thermometer, the use and working principle of thermoelectric...

the use and working principle of thermoelectric thermometer

Advantages of a.c. transmission of power, Advantages of A.C. transmission o...

Advantages of A.C. transmission of power 1. The power can be produced at high voltages. 2. The maintenance of a.c. sub-stations is simple and cheaper. 3. The a.c. voltage

Michelson morley experiment, Michelson Morley Experiment The Michelson...

Michelson Morley Experiment The Michelson-Morley experiment was performed within the year of 1887 through Albert Michelson and Edward Morley at what is presently Case Western

Explain fungal prophylaxis in hsct, Fungal Prophylaxis in HSCT  A prosp...

Fungal Prophylaxis in HSCT  A prospective randomized double- blind trial in 882 adults and children compared prophylaxis with mica fungin 50 mg IV once daily (1 mg/kg for patie

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