prateeksikka

hi jagan! i can tell u the general functioning of a wattmeter. the 2 coils which u see inside are current coil and voltage coil. voltage coil is in parallel (less no of turns)and current coil with more number of turns. the resultant field produced is such that it is proportional to product of currents in 2 coils.this resultant field is responsible for moving a needle .movement of needle is then calibrated in terms of power. V*I in otherwords i1*i2. ;D

hi there! a long way to go for u. try using an LCD for time being i mean configure it by software and try printing your name on it. try to move a step forward and try to print it moving from right to left. u can refer www.howstuffworks.com to learn about the pin functions and how the data flows through it. ;D gud luck!

hi legend! have u been able to glow a sevensegment through a computer port? try and make a seven segment counter from 1 to 9.with some delay. then u can go for interfacing an LCD with a computer port(parallel port) ;D

hi there! u can get a lot oif projects here on this site as well as other sites like hobbycircuits, beyondlogic ;D aaroncake.net

hi my friend! u cant believe in science and magic together.and u know one thing 90% of magic is made up of scientific tricks.acid turns a litmus paper red. and base turns phenolphthalin pink.magic!!!!!! ;D ;D ;D

HI AUDIOGURU! ANY EXPLANATION FOR THE MECHANISM BY WHICH THE CHARGES SEPARATE? AS THIS SITE SAYS IT OCCURS DUE TO SEPARATION OF CHARGES.BUT WHY DO THEY SEPARATE AND THAT TOO ONLY WHEN IT RAINS? ???

HI LUCAS! if you are building a toy circuit with just 15-20 components you dont even require a breadboard .u can do it with a simple zero purpose PCB IF YOU WANT A BREAD BOARD PURCHASE THE ONE WITH ALL PINS VERTICAL IN A LINE ARE SHORTED. OFCOURSE U ESCAPE FROM THE SOLDERING. IT IS GENERALLY WHITE IN COLOUR(AS FAR AS I HAVE SEEN IN MY COUNTRY) ;D ;D

even on a technical ground, i would prefer a radio reciever, a toy alarm based or a PC based system as a better choice.

camera is no good as a starting project for an electronics hobbyist!many other in queue. ;D ;D ;D ;D ;D

hi there! i guess it is too tough for a beginner! anyway ;D

so u mean to say that companies reduce the power factor to reduce the transmission losses bu still charge you for V*I? very clever! ;D

hi there alun! do u mean to say that actually we dont require these power factor boosters but the companies connect it to earn more? Why do the companies in UK boost up the power factor when they are already charging u for V*I? and it will in adverse increase the losses too!! :o

hi npatel! according to nyquist theorem i guess which will apply here also ur sampling frequency should atleast be twice that of the signal frequency. regarding the cap choice u really cant tell unless u see the circuit and test it with power use a variac or bank cap and see the position of min oscillations.thats it prateek

hi ! yes transformer is what u require and in case it is dc u dont even need that. a simple pot will do the job. hey alun! why dont we use a pot for ac also? i guess we can (i mean a potential divider) no?

hi alun! but why do they require it in ur country,when u r already paying maximum. i.e power factor=1 at ur end and so at the companies end.they cant increase beyond 1.so why do they use these capacitors.i guess similar is the case in india. plz reply ;D

hi tekker! for me its fun both teaching and learning from the teachers ;D ;D ;D

and me too! ;D ;D ;D

hi alaveny! thanks a lot hi tnk2k! my house draws 32A from the mains at full load conditional only the Air conditioner is switched off.I have never tried switching all the devices together for the sake of safety.My wiring is precious. ;DBut i am sure even if i switch on the AC,you can add a few more amperes to it.in nut shell not more than 40A. prateek

hi there! as u are a computer engineering student,i m sure u would be very comfortable with programming languages like C ,C++.these days ,i am myself writing a code in C for file transfer from one pc to the other through serial port.You can try out any project like LCD configuring and using(on parallel port).Led glowing.An interesting project would be to connect 8 leds and glow them one by one after some delay.u can use it as seven segment counter.Inport,Outport And Delay are mainly 3 functions which u would use. simple! prateek

i guess here in india the meters measure active power.i.e the power actually dissipated.perhaps that is the reason why the government electricity boards and companies connect power factor boosters at some intervals along the line these boosters push up the power factor,otherwise companies would be bankrupt!even for a power factor of 0.5,they will be losing half their income ;D prateek

hi audioguru! selling knowledge for fast bucks.is it fair enough.I dony\t think so atleast! ;D

HI ALL! I URGENTLY WANT TO KNOW WHETHER THE 2 PALS PAL 20RA10CNS AND PAL20X10CNS ARE EQUIVALENT OR NOT?

hi tekker! atleast audioguru is right in the following aspect: TEACHING IS NO LONGER CONSIDERED A 1 WAY PROCESS,IT IS A 2 WAY PROCESS IN WHICH WE TEACH AS WELL AS LEARN.ISNT IT?

hi kevin! there is no difference b/w the current .Say 5mA is only 5mA irrespective from where it comes.it is simply 5milli Coulumbs/sec. Although the mechanism in which conductors and insulators(not perfect insulators ofcourse) conduct.The charge carriers those who are in majority may also be differing in some concentration. Current is a Current! ;D prateek

hi alun! in your country how do the electric companies measure the power used by you when you are feeding back the energy recieved in form of magnetic field.I mean how does your meter come to know the amount of power which u have apparently used and not actually used! the meter must be reading V*I *Cos(Q).no? :o