9V Battery advice needed

Discussion in 'General Electronics Chat' started by Ty_Emery, Jul 31, 2014.

  1. Ty_Emery

    Thread Starter New Member

    Jul 31, 2014
    Hey guys. This is my first post here so please forgive me if this has already been asked (sorry, I don't know what to search for)

    I am making a prop from a film, it has a small LED blinker that is hooked up to a small on/off switch and powered by a 9V battery. When I leave the battery hooked up to the switch and LED the battery quickly runs down and is flat within around an hour. How do I stop this drain? Do I need some sort of resistor to stop the power drain?

    Again, please forgive me for the noob question, I don't have a clue about this stuff! Many thanks, Ty
  2. Shagas

    Active Member

    May 13, 2013
    What LED 'blinker' are you using? Is it just an LED (or is it one of those LED that blinks byitself)? If so then you need to put a ~680-1000ohm resistor in series. If it's unclear as to how you should do that , google 'led series resistor' , you will find tonnes of info. GL
  3. Ty_Emery

    Thread Starter New Member

    Jul 31, 2014
    Ah great thanks Shagas. It's one of those fake car alarm types and yeah it does blink by itself.

    Thanks again :)
  4. bug13

    Senior Member

    Feb 13, 2012

    I think you need to provide a link to the LED blinker you are referring to, better a picture of how you actually hook up the wire.