Please Help Me Someone

Discussion in 'General Electronics Chat' started by cybercoolperson13, Apr 12, 2007.

  1. cybercoolperson13

    Thread Starter New Member

    Apr 12, 2007
    1
    0
    I am trying to instal some LED lights on some speakers i have and i want to power them off the speakers so they flash to the music.. but i tried it and it blew them out(well there was a bright yellow flash and they didnt work anymore) so if anyone knows how i can put a fuse in or something so that it will work please let me know! email me at cybercoolperson13@hotmail.com. thank you
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Did you include a series current limiting resistor in line with the LED? If so, what value of resistance did you use?

    hgmjr
     
  3. nomurphy

    AAC Fanatic!

    Aug 8, 2005
    567
    12
    The audio to the speakers is AC, you need an appropriate blocking diode in series with the LED along with a ballast resistor.

    Somethin' like this:

    (+) ----|>|-------RES-----|>|----- (-)
    ____ 1N4002_ ~470 ohm __LED
     
  4. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    here's a crude stab of what what you are trying to do.

    moz
     
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