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  1. prateeksikka

    Micro battery charger

    HI AUDIOGURU! A BOOK ON PHYSICS BY "RESNICK AND HALLIDAY" SHOWS A CAPACITOR BEING USED IN A MEDICAL DEFEBRILLATOR BY A DOCTOR AND THEN IT EXPLAINS ITS ANALOGY WITH THE SPRING.HOW IS A CAPACITOR DIFFERENT FROM A BATTERY IN OPERATION? (MORE SPECIFICALLY A RECHARGEABLE BATTERY) CAN IT REPLACE A...
  2. prateeksikka

    circuit simulator

    HI THERE! professionally and commercially made testers are already in market by companies like TESEC and KEITHLEY. HEY! MULTIMETERS ARE ALSO TESTERS? ::) PRATEEK
  3. prateeksikka

    EYE SIGHT SENSOR

    i wish to get an idea for a sensor ! which people should see to get the o/p.it should not give out any source of its own.Flashing light is not the property if the sensor. Moreover i dont wish to make people blind for this stupid project. ;D prateek
  4. prateeksikka

    TRANSISTOR ATTENUATOR?

    hi audioguru! that means a voltage divider bias instead of a fixed bias can serve as a reversible transistor amplifier? :o Although this is just a part of my interest, i know that for a very good quality attenuator i need just a pot!!! :) prateek
  5. prateeksikka

    mp3 player from hardisk

    i know that i have to use some kind of decoder which changes the hardisk file to mp3 format but i dont have much knowledge about them and even dont know what kind of hardware or software i need for it. :'( prateek
  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

    Micro battery charger

    hi spacifique,audioguru! i too have heard about such batteries(basically put to use in watches) but dont have much information aboit it.It is aslso known that such batteries have very long lives.anything more u know plz tell me too. ::) prateek
  8. prateeksikka

    circuit simulator

    hi there! what would u like to call such a system? a simulator or device tester? one of them is available as ORCAD capture and the other as a good quality multimeter. ;D prateek
  9. prateeksikka

    RC time constant

    yes audioguru! through my post i wished to state that broadly,frequency control the most important part for a filter is mainly governed by RC time constant and not the physical arrangement of the components.Basically our aim to pass a signal through a filter can be attained by relative high or...
  10. prateeksikka

    EYE SIGHT SENSOR

    hi alun! I too have heard about these types but just heard! :D i think the light will still reflect from our retina even if we are looking at some other place.I mean it should sense it when we look at it.Is it possible or we have to become all SUPERMANS! as audioguru said! 8) prateek
  11. prateeksikka

    class of amplifier

    hi audioguru! i just wish to know is it the market which labels it as class A and class B ? or it is upto us to operate it in any region depending upon our application. prateek
  12. prateeksikka

    RC time constant

    hi there! even in this ckt, a high value of RC time constant makes its cutoff freq lower i.e high pass while very low RC makes cutoff freq high i.e low pass filter. So its just a game of RC! while most people think that positioning of R&C makes difference although the easiest method is to...
  13. prateeksikka

    My girlfriend is getting into electronics

    hi audioguru! yeah! same the case with me too! can u believe that mathematics still says its possible even when there is no place for 1 million labourers to stand,it is the population of an average city in india!
  14. 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...
  15. prateeksikka

    RC time constant

    HI audioguru! i feel that RC time constant chosen depends on the application you are putting the filter into and the type of filter.recently i saw a timer circuit in which RC time constant was as high as 5s .i have seen circuits with time constant as low as 2-3 micro seconds.One of the book on...
  16. prateeksikka

    My girlfriend is getting into electronics

    hi there! IF U WISH TO BUILD A HOUSE .AND U KNOW THAT 1 LABOURER WILL BUILD IT IN 10 DAYS.SO 10 LABOURERS WILL BUILD IT IN 1 DAY, AND SO IF U PUT ABOUT 1 MILLION LABOURERS IT WILL BE BUILT IN LESS THAN A SECOND!!!!!!! BELIEVE ME GUYS,IT IS TRUE MATHEMATICIAN WILL HAVE NO OBJECTION TO IT BUT A...
  17. 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
  18. prateeksikka

    Hydrogen fun

    HI THERE! IT IS DESTRUCTIVE ,BUT I COULD NOT UNDERSTAND ONE THING.WILL THE SPARK BE PRODUCEDE BY APPLYING HIGH VOLTAGE ?SUPPLYING ENERGY HELPED WATER MOLECULE TO BREAK UP ,NOW THE SPARK WILL IGNITE THE HYDROGEN? PRATEEK
  19. prateeksikka

    Parking Lot Counter Question

    HEY all of you! can u believe me nothing is required(hardware) for such a project but just a few LEDs and that too during the debugging of the simple software u write for it.although some hardware may be required if u wish to have automation.but if the attendant is ready to push a computer...
  20. prateeksikka

    mp3 player from hardisk

    hi audioguru ! i guess audioguru is right.mp3 players have a limited memory.Yes, one thing can be done .Now i have hit upon an idea,can we interface the mp3 player with my harddisk?then i can have quality music and number of songs i.e both quality and quantity.if not harddisk upto 40 or 80...
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