Reading PCB

Replies

• 

  Harshad Italiya

  Just try to do Reverse Engineering and make one Circuit if it is ready then you might get clear that ok this portion may be for Rechargable battery normally there are very less component used in the circuit for rechargeable battery.
  
  or post it here i will try to do something if possible.
• 

  TARANJEET SINGH

  i can't get it ¿ 😕
• 

  Voltaire

  i had just opened it & got screwed

  Lucky bugger
• 

  TARANJEET SINGH

  any other ideas ???
• 

  Voltaire

  What are you trying to do? Remove the battery? Just take it out!
• 

  TARANJEET SINGH

  i don't think that just taking the battery out will be sufficient.I don't want to make it a show piece as i want to charge it(& of course it is chargeable) so you can't just plug the terminals of the battery into 220 volt line, isn't it. And moreover i'm not just talking about this PCB.There are many more i had got.I just want to know how to read the PCB
  Thanks in advance...
• 

  Voltaire

  Taranjeet
  Explain to me nicely. Do you want to build a charger?
• 

  TARANJEET SINGH

  yes you can say that (for now at least).The battery is attached to port which charges when i connect it to computer or power.
  how is it done ¿
• 

  Harshad Italiya

  Let us know which type of battery it is? NiCd or any other?
  
  Many different types of Battery Charger circuit are available try anyone of them.
• 

  Voltaire

  If you want to build a charger because you are curious then this is easy to do but if you just need a charger then you should buy one.
  Remember that a simple charge could over-charge the battery unless you add a comparator
  First you need to create impedance in the AC circuit or else you will need a big resistor and you will use a lot of power. So, use a capacitor
  Then rectify the AC to DC. You can use a simple bridge rectifier or you can make one with 4 diodes
  The rectified current is now DC but high voltage (remember that the AC feed is RMS)
  Take that current over a resistor to reduce the voltage and then use a zener to control the voltage at a set point. Remember that zeners go back-to-front because they have a breakdown voltage
  Use a cap to smooth the DC circuit
  The circuit is grounded. Check it out before you start. I blew a few resistors before I understood what 'ground' is 😀
  Peace
• 

  TARANJEET SINGH

  got it all, thanks ,but can you tell me the use of zener diode.i know about breakdown voltage but why use zener. ¿¿¿
  thanks again
• 

  Voltaire

  Think about it 😉 then tell me
  What would happen if the draw current increases over a resistor? Hint: V = IR
  More precisely dV = R dI
• 

  Muffy

  Laughing Out Loud !!!

  Voltaire

  Lucky bugger