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  1. prateeksikka

    MULTIMETER

    HI ALL! TILL NOW I HAD THE PERCEPTION THAT A MULTIMETER GIVES A BEEP WHEN ITS 2  TERMINALS ARE SHORTED.BUT TODAY ONLY I CONNECTED A 4.7k RESISTOR TO MY SUPPLY AND CONNECTED THE MULTIMETER ACROSS THE RESISTOR AND IT GAVE THE BEEP.WHAT IS THE CONDITION FOR THIS BEEP? WHAT IS ITS SIGNIFICANCE? PLZ...
  2. prateeksikka

    URGENT!

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

    do we pay less?

    hey guys! the electricity meters in our homes show the monthly usage by us of active power . i.e V*I *cos(Q).i.e voltage*current*power factor.as power factor is less than 1,this power is less than voltage *current actual power used by us. So do we pay less than actual power used by us. i mean...
  4. prateeksikka

    LIGHTENING STRIKES

    HI THERE ALL! CAN ANYONE TELL ME WHAT CAUSES LIGHTENING STRIKES IN RAINY WEATHER. I HAVE READ THAT IT IS DUE TO SOME IONS BUT HOW I DONT KNOW. FROM WHERE DO THESE IONS COME? ::) PRATEEK
  5. prateeksikka

    TRANSMISSION LINES

    HI ALL! YOU MUST BE KNOWING THAT ELECTRIC POWER IS TRANSMITTED AT HIGH VOLTAGE AND CURRENT IS KEPT LOW.REASON IN SUPPORT OF THIS IS THAT HIGH CURRENT GIVES MORE I*I*R LOSS IN POWER.I WISH TO KNOW THAT WHY WONT HIGH V*V/R LOSS BE SIGNIFICANT HERE WHICH IS ALSO A FORMULA FOR POWER LOSS AND...
  6. prateeksikka

    TRANSISTOR ATTENUATOR?

    HI ALL! LET US CONSIDER A TRANSISTOR OPERATING IN ACTIVE REGION AS AN AMPLFIER.IT IS IN COMMON EMITTER CONFIG.IT HAS A GAIN OF SAY 50.I APPLY 1mV signal at i/p and i get 50mV at the collector.what would happen if i now apply a 50 mV signal at the collector?will it attenuate the signal?what do...
  7. prateeksikka

    class of amplifier

    hi all! Does anyone have the idea about class of an amplifier.i know that there are class A,class B,class C amplifiers depending on the region of their operation.But i wish to know that is it upto the user to operate the transistor in any region or do we purchase it by the name of say "class A...
  8. prateeksikka

    EYE SIGHT SENSOR

    HI ALL! ONCE WE HAVE SUCCESSFULLY MADE TOUCH SENSORS USING SWITCHES, PIEZOELECTRIC CRYSTALS ,POTS ETC AND EVEN PROXIMITY SENSORS USING LIGHT RAYS AND ALSO MAGNETIC FILELD,HOW FAR WE ARE FROM THE SIGHT SENSOR THAT GIVES OUTPUT WHEN WE LOOK AT IT.IS ANYONE WORKING OVER IT?  :-\ PRATEEK
  9. prateeksikka

    IC TESTER

    HI ALL! CAN ANYONE TELL ME A COMPUTER SOFTWARE THROUGH WHICH I CAN TEST AN IC FOR ITS FUNCTIONALITY AND PIN CONFIGURATION? PRATEEK
  10. prateeksikka

    bonding

    hi all! can anybody tell me if die bonding and mounting are  same? with regard to IC FABRICATION? PRATEEEK
  11. prateeksikka

    741 op amp

    hi all! u all might be knowing 741 ic is an operational amplifier. it is an 8 pin IC.AND WE ALSO KNOW THAT 8th pin is not used and it is neither ground. i sometimes wonder why do manufacturers include this pin,i.e there is no need to take this connection 7 pin wont be sufficient? comments? prateek
  12. prateeksikka

    OPTOCOUPLERS

    HI EVERYBODY! CAN ANYBODY TELL ME WHAT ARE OPTOCOUPLERS ,PRINCIPLE AND WORKING AND APPLICATIONS???? PRATEEK
  13. prateeksikka

    COMPUTER SYSTEM

    HI EVERYBODY! I OPENED UP THE CPU BOX OF MY COMPUTER FOR THE SECOND TIME I COULD RECOGNIZE THE CPU CHIP ON THE MOTHERBOARD,A THICK BOOK TYPE HARDDISK!,AND A FEW OTHER BUSES.CAN ANYONE HELP ME IN KNOWING WHAT TYPES OF BUSES ARE THESE.THOUGH I KNOW A FEW WORDS LIKE ISA BUS,PCI BUS ETC.WHAT DO...
  14. prateeksikka

    TELEVISION

    HI ALL! CAN ANYONE OF YOU HELP ME IN KNOWING THAT WHY IS A TELEVISION NEVER HAS A GROUNDING PIN.i.e it has a 2 pin connector to the supply (this is what i have noticed) plz help prateek
  15. prateeksikka

    COLOUR T.V

    HI ALL! I HAVE SEE MANY T.V CORDS WHICH CONNECT IT TO 230V AC.BUT I HAVE NEVER SEEN A 3 PIN CORD.i.e A TV I HAVE NEVER SEEN GROUNDED.CAN ANYONE TELL WHY? PRATEEK
  16. prateeksikka

    SIMPLEST LIE DETECTOR

    I GOT THIS CIRCUIT OF A SIMPLE LIE DETECTOR AT WWW.AARONCAKE.NET BUT IT DOES NOT WORK PROPERLY NEITHER DO I KNOW HOW TO OPERATE IT.I HAVE ALREADY MADE IT.ANY SUGGESTIONS FOR IMPROVEMENT? PRATEEK
  17. prateeksikka

    FM WAVE PROPAGATION

    HELLO EVERY BODY I HAD A THOUGHT IN MY MIND A FEW DAYS BEFORE.I HAD READ TILL NOW THAT F.M WAVES PROPAGATE ALONG LINE OF SIGHT JUST LIKE ANY OTHER VHF SIGNAL.BUT I COULD NOT FIND THAT WHY F.M WAVES CAN NOT TRAVEL ALONG THE GROUND LIKE A.M WAVES?IN OTHER WORDS,WHAT DIFFERENCE DOES IT MAKE WHEN...
  18. prateeksikka

    AM RECIEVER

    HI EVERY BODY!AFTER MY SUCESSFUL WORK ON THE ASSEMBLY OF AN F.M SUPERHETERODYNE RECIEVER AND ELECTRONIC STETHOSCOPE(WITH HELP FROM ELECTRONICS LAB) I WISH TO WORK ON ASSEMBLY OF AN A.M RECIEVER I.E THE CONVENTIONAL A.M RADIO.A SIMPLEST CIRCUIT ISWHAT I REQUIRE.ANY SUGGESTION OR HELP EVEN WITH...
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