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led through electricty

Discussion in 'LEDs and Optoelectronics' started by devesh, Aug 26, 2012.

  1. devesh

    devesh

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    Aug 26, 2012
    if i cut end of mobile charger and connect some led to so it will work or not....cz charger converts 220v to 5v?
     
  2. KJ6EAD

    KJ6EAD

    1,114
    157
    Aug 13, 2011
    Yes, I do it all the time.
     
  3. devesh

    devesh

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    Aug 26, 2012
    so it does need any resistor ...and how cn i make display through led....using motor...
    thanks for ans...
     
  4. KJ6EAD

    KJ6EAD

    1,114
    157
    Aug 13, 2011
    It does need a resistor or some other current regulator. If you use a resistor, the value will depend on the LED specifications.

    Your reference to a motor is unclear. Are you thinking of a persistence of vision (POV) display?
     
  5. devesh

    devesh

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    Aug 26, 2012
    yes pov display...how cn i make it
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

    9,137
    1,846
    Nov 17, 2011
  7. devesh

    devesh

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    Aug 26, 2012
    how cn i make a digital meter for my bike...
     
  8. Harald Kapp

    Harald Kapp Moderator Moderator

    9,137
    1,846
    Nov 17, 2011
    LMGTFY

    5th or 6th hit on page 1. You know Google, do you?
     
  9. devesh

    devesh

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    Aug 26, 2012
    how cn i delay led in seconds,
    and how cn i make led remote control
     
    Last edited: Sep 6, 2012
  10. thebluepuppy

    thebluepuppy

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    Sep 7, 2012
    MAKE SURE YOUR PROPERLY GROUNDED FIRST MAN WHETHER OR NOT THE OUTPUT IS LOW VERY LITTLE AMPS CAN STOP YOUR HEART. SAFETY!!!!
     
  11. Harald Kapp

    Harald Kapp Moderator Moderator

    9,137
    1,846
    Nov 17, 2011
    He's on the 5V end of the charger. No need to worry here.
     
  12. Harald Kapp

    Harald Kapp Moderator Moderator

    9,137
    1,846
    Nov 17, 2011
    Just turn it on later.
    use long wires.

    Just kidding. You need to be more specific:
    How long do you want to delay the LED? Do you want to delay turn on, turn off, or both?
    Over what distance do you want to remote-control it? Do you need delay and remote control at the same time? What is your application?

    Your questions let me assume that you don't have much experience in electronics. In this case building a remote control from scratch is a very ambitious undertaking. I suggest you find a suitable ready made remote control or a kit fopr a remote control. Just to get started.
    A remotre doorbell may also be used to control a light or LED. just replace the receiver's buzzer with the LED.
     
  13. devesh

    devesh

    6
    0
    Aug 26, 2012
    i dnt gt u ....hw cn i dealy led ?
     
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