Recent content by munna007

hello friends , In zener diode due to high doping ,electric field is very intense .So this electric fields knocks electrons from atoms and reverse current starts flowing during reverse biasing. its said that at the same time it maintains constant voltage . Of which voltage we are talking...

What is the differecenbetween insulator and dielectric ? hello friends , please clear me the difference between them.

Do u agree with the statement given in picture i have attached about zener diode. i have taken this snapshot from a book on electronic devices.

Help in MATLAB image processing ? hello friends...i save my picture named "manish.tiff" in MATLAB directory...then opening this with command named rgb =imread('manish.tiff') in command window...but it shows error... below is the error i m getting. (? Error using ==> imread File...

i m trying to solve this question by method given in most of the standard books i.e. Vc(t) = Vc(\infty) - [Vc(0\hat{}-) - Vc(\infty) ] e \hat{} -t/RC first i found Vc(0\hat{}-) by considering switch open and inductor behaving like short and capacitor open at steady state...then i find...

thanks a lot sir...i understood mistake done by me...

thanks for reply sir...can u please tel me how u have said V=10 - (voltage across 6 ohm) please explain with detail... and is not V and 10 volt same thing ? n so i think it should be V=10+V6

Hello friends...in this questions the answer is (b) option...this is from indian engg. services exam. if we apply mesh in loop which i have shown , then we find that I = (10 - 5 )/10 = 0.5 amp V=10 - 6 I = 7 volt (right acc. to answer keys)...

this is one of exercise question in exercise at the end of the chapter...there is not any description in any of the book...https://www.amazon.com/dp/0070212341/?tag=pfamazon01-20 above is the link for the book where i have found the question...

if b >> a ,Ex and Hy are zero .why ? hello friends...in schaum series book on Electromagnetic field theory , its shown that if b>> a then Ex and Hy are zero , and only components present will be Ey , Hx, Hz... can you please tell me the reson for that...what happened when we made b >> a... (...

need help in MATLAB simulink ? when i try to connect display block with error calculator block then this red line appears instead of black...it shows that no connection between them...can u please tell me how to conect them ... thanks ...see the attachment please...

indirect band gap semiconductor doubt its said that indirect band gap semiconductors like silicon and germanium are not used as a light sources because they have more non-radiative recombinations rather than radiative ,which inturn decreases efficiency of optical source. but i want to...

is mass action law only applicable to semiconductor at thermal euilibrium and why? i don't know what happens with semicounductor at thermal euilibrium...why is mass action law not applicable at non-euilibrium...

it means that collelctor ckt is reverse biased (during active state of transistor)...so it is having higer resistance in this situation. emitter is forward biased (during active situation).so it is having lower resistance...

how impedence matching is done with any transistor configuration ? hello friends...we all know that common collector transistor have higher input impedence and lower o/p impedence ...and this is very good for impedence matching...but i don't know how impedence matching is done by them... can...