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prateeksikka

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Everything posted by prateeksikka

  1. audioguru! can i call optocouplers as solutions to bulky transformers which do the same job? prateek
  2. hi audioguru! my question still remains.what are these optocouplers.i only know one line pertaining to them "they have same relation to 2 ground points isolated from each other"which i could search from google.com reply soon prateek
  3. HI EVERYBODY! CAN ANYBODY TELL ME WHAT ARE OPTOCOUPLERS ,PRINCIPLE AND WORKING AND APPLICATIONS???? PRATEEK
  4. hi buddy! what kind of video circuit do u require?plz be clear prateek
  5. audioguru! though in any case i have only seen electrolytics caps exploding ceramic capacitors just turn blackish if i apply high voltage across them prateek
  6. hi audioguru! what kind of program can do this job.anyhow ripple counters is an easy option can an 8085 or even my pentium desktop PC be used as a controller ? what would be the logic for such a program? prateek
  7. what kind of data do you wish to read from the sim ? mind you your sim me get destroyed in the due process prateek
  8. HI AUDIOGURU! AC THROWS US AWAY BECAUSE I GUESS DIFFERENT FORCES DIRECTION B/W PARALLEL AND ANTI PARALLEL CURRENTS.] (I GUESS) MOREOVER AT OUR HOME AC VOLTAGE BECOMES ZERO ATLEAST 50 TIMES IN 1 SECOND.WHILE DC MAKES ME STICK TO THE LINE,NO CHANCE OF GETTING AWAY HENMCE IT IS MORE DANGEROUS! RIGHT?YOUR COMMENTS PRATEEK
  9. I KNOW THAT AN ELECTROLYTIC CAPACITOR HAS A POLARITY! I AM SURE ON THAT POINT ! I CONNECTED IT RIGHT AFTER ALL,I LOST 2 CAPACITORS IN2 HUGE EXPLOSIONS.NEITHER ARISES A QUESTION OF HIGH BIAS BECAUSE I WAS CAREFULLY INCREASING IT WHEN I REACHED JUST 4V IT EXPLODED WITH ALL MATTER COMING OUT OF IT.YMMMMMMMM CAN THE CAPACITORS BE FAULTY? PRATEEK
  10. hi audioguru! in any case which when according to you is more dangerous? a 220 V AC OR A DC VOLTAGE OF SAME VALUE? MY ANSWER(A GUESS) IS DC BECAUSE AC WILL ATLEAST ASSUME ZERO VALUE MANY TIMES IN SAY 10 SECONDS BUT DC WOOOOOOOOF! WHAT DO U THINK? PRATEEK
  11. hi audioguru! i had started this topic of FM wave propagation because i had recently built an FM RECIEVER AT MY PLACE ,.it was designed to operate at 220Vac which was followed by transformer,rectifier and filters etc. actually i had no transformer earlier when i was making it, out of curiosity,i connected only 4V dc (with fear in mind) after the filter directly and you wont believe,one of my electrolytic capacitors of 470uF exploded like a bomb! i changed it and put a 1000uF in its place i was shocked when i saw it exploding into pieces,however the circuit worked when i put the T/F in place and connected the mains supply any comments on how it could happen? prateek
  12. hi audioguru! can i safely conclude that it is neither voltage,nor current but high power kills a person.high voltage and high current alone cant do anything .it is the power(voltage*current) which kills the person. comments from all? prateek
  13. HI AUDIOGURU! THE FORMULA POSTED BY SHAHRIAR CLEARLY TELLS US THAT DISPLACEMENT CURRENT IS A FICTITIOUS CURRENT ASSUMED TO SATISFY THE EQUATION!!!! (MAXWELL'S EQUATION) SOME BOOKS ALSO SAY THAT NOTHING IS GETTING DISPLACED,THE NAME IS JUST A JAM DUMMY AND PURELY AN ASSUMPTION,YOU COULD CALL IT AS YOU LIKE BUT IT IS JUST A CONVENTION TO CALL IT A DISPLACEMENT CURRENT(FUNDAMENTALS OF PHYSICS BY RESNICK AND HALLIDAY SAYS THIS) PRATEEK
  14. ANTE! IF I CAN STAND HEALTHY T 29 mA,I GUESS EASILY I CAN TOUCH THE VERY HIGH VOLTAGE TRANSMISSION LINE WHICH HAS A FEW MICRO AMPERES FLOWING,CAN A MICROAMPERE CURRENT KILL A PERSON EVER? PRATEEK
  15. hi all! alun u r right transformers do cause some problem in winding but air cored inductors very easy to make! i hv myself made some of them .fatal i can help u in that regard u just need a piece of wire prateek
  16. hi audioguru! i must correct u on this point.in my country too ,F,M and AM bands are not used by army,the bands used by them fall into say 540-1600kHz which we vaguely called AM band (atleast in my country) but thats what i meant by my point earlier,540-1600 kHZ IS NOT F ULLY AM some frequencies are missing and those are used by army .actual AM is say(hypothetical) 540-670 690-880 930-1600 these are assumed and not actual values values falling out of this range used by military prateek
  17. HI AUDIOGURU! WHILE SEARCHING ON THE NET,I FOUND THAT SOME OF THE SO CALLED MISSING FREQUENCIES ARE RESERVED FOR USE BY OTHER APPLICATIONS LIKE MILITARY ETC COMMENTS? U TOO SEARCH FOR A POSSIBLE REASON AND DO TELL ME IF U GET IT! PRATEEK
  18. HI THERE! WHATS A CB? FOR WHAT APPLICATION DO YOU WANT THIS INDUCTORS, I HAVE MYSELF MADE INDUCTORS FOR SOME OF THE APPLICATIONS.MAY BE YOUR APPLICATION FALLS IN THAT AREA ,IF YES U CAN MAKE IT ON YOUR OWN,ITS REALLY SIMPLE,BELIEVE ME! PRATEEK
  19. can anyone tell me the names of common buses like PCI,ISA etc and the functions they perform? my cam is not working so i cant post a pic of my PC
  20. 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 THESE BUSES ACTUALLY DO AND WHAT ARE THE DIFFERENCES B/W THESE BUSES.DO WE HAVE ANY OTHER BUS IN THE SYSTEM? PRATEEK '
  21. AUDIOGURU! HIGH VOLTAGE GENERATING HIGH CURRENT KILLS A PERSON. A 2A CURRENT SOURCE ,WILL IT GIVE ME A SHOCK,IF NOT WHAT VALUE OF CURRENT SOURCE (ASSUMED IDEAL) AND WHAT VALUE OF VOLTAGE SOURCE CAN GIVE A GOOD SHOCK? PRATEEK
  22. hi MP! AND OTHERS I NUST ADD THAT BE CAREFUL TO CLEAR THE DATE AON THE PORTS BEFORE USING ANY INPORT COMMAND IN YOUR PROGRAM,AN EXCESSIVELY HIGH VOLTAGE PRESENT ON A PORT PIN ALONG WITH THIS CARELESSNESS CAN EVEN DAMAGE YPUR MOTHERBOARD(IT IS A PRACTICAL EXPERIENCE) PRATEEK
  23. hi vaibhav! u can very well work on projects like physical layout design(i.e how the components will be physically arranged on the chip),timing analysis, delay analysis,micrtocontroller programs(if u have some knowledge of a programming language like C or atleast assembly language) these u can do sitting at ur home on a PC!!!! PRATEEK
  24. HEY GUYS! WHATS THE PROBLEM IN USING AN INTEGRATOR CIRCUIT WITH FEEBLE AMPLIFICATION USING OPAMPS? PRATEEK
  25. AUDIOGURU! A FEW mA current is sufficient to kill a person .if i take a voltage source of 3V,short circuit it,a large,huge current will flow,even if i touch the wire at this point it wont even make me feel the current while a roomheater which has a few mA or hardlyA current can tear apart a person.ur comments? prateek
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