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  1. C

    Replacing Broken Power Circuit Of A Philips Dock

    Hey guys, I have a philips dock (dc291/37). It runs on 110V,60Hz supply. Ive been using it in India(220v,50Hz). Unfortunately, some of the SMD caps in the power circuit got burnt, rendering the dock useless now without a power supply circuit. Since, there is no way to replace the burnt caps and...
  2. C

    Reviving dead lipo battery

    Hi, I have an old AIgo MP3 player, which refused to charge anymore with the original battery, 3 years back. I then, bought a new lipo of same parameters, 3.7v around 2500mAh.. But. For some reason, I didn't install it. Now, I checked with a multimeter, the battery showed 0V.. Also connecting it...
  3. C

    Wireless trigger for LEDs and buzzers

    Hi guys, I am noob in electronics and very fresh to radio communications, and I have a simple idea which needs to be implemented. The thing is, I want to place a wireless transreciever with a switch in one room at one end of my house and another transreciever on another room at another...
  4. C

    Pulsing an ir led using arduino

    Hi guys, I have an ordinary ir emitter and an receiver(just the LEDs with two pins). I managed it to send its signal to a pin on the arduino and am now able to control things like a led glowing when path obstructed. But I have no idea at what freq. the ir is transmitting. But I want a method to...
  5. C

    Difference between trim-pot and log pot

    Hi, Can anyone explain me about the difference between trim-pot and log-pot.
  6. C

    voltage fluctuations

    hi all, I have a desktop pc at my home. Sice a few days, i am experiencing voltage fluctuations in my home, due to which my pc gets instantly restarted. I have an Numeric Digital 600 AV UPS connected to it. But the ups has lost battery power nor does it prevent my pc from restarting. Also, i...
  7. C

    connecting pic16f84 to pc thru pickit2

    hi, this is my first try to burn a program into a pic. I have already created a hex file, compiled through CCS compiler. Now, according to the info given in the pic datasheet and the guide from the pickit2 software, i have connected as follows: PICKIT2 PIC 16f84 1st pin to...
  8. C

    battery replacement

    Hi, this is my first post i have an aigo mp4 player. its battery is an lithium polymer 3.7V/500mAh battery. Its model no: FT293454P Now the battery has worn out. I searched the net, and i found this battery of the same kind. but all of them allow me buy it only in a lump quantity(like 500...
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