Connect with us

LED's

Discussion in 'LEDs and Optoelectronics' started by Dylan Wisdom, Apr 14, 2014.

  1. Dylan Wisdom

    Dylan Wisdom

    26
    1
    Apr 10, 2014
    Is there anyway to get an LED to turn on when current stops flowing?
     
  2. sirkituk

    sirkituk

    12
    0
    Mar 27, 2009
    use an inverter circuit
     
  3. duke37

    duke37

    5,250
    723
    Jan 9, 2011
    A LED will only produce light when current is passing through it.

    If you wish to light a LED when passing through some other part of the circuit, in order for us to help, you will need to give more information.
    AC, DC, amperage, voltage, rate of curent change etc.
     
  4. dude

    dude

    35
    6
    Apr 15, 2014
    Like the others have said, hard to answer that question without knowing your particular application. If its just part of a circuit you are trying to monitor, bias a PNP transistor to earth with an appropriate resistor, then run another (appropriate) resistor to between that and the base, fed from the current you are trying to monitor. At least that's how I think I solved that particular problem once upon a time, there's probably easier ways.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-