10/20 sec timer relay

Discussion in 'The Projects Forum' started by berend001, Dec 5, 2012.

  1. berend001

    Thread Starter New Member

    Dec 5, 2012
    2
    0
    Hello everyone,

    I am working on a school project and got stuck on a circuit. I would like to make a circuit that when I press a button a light turns on and stays on for around 10/20 seconds. How can i do that? I found out that I could use an analog delay using resistors and capacitors or an ic like a 555 timer. What would be the best solution. The time does not have to be very exact just around 10/20 sec.

    Thanks a lot
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,100
    3,034
    "Best" is in the eyes of the beholder. Only you can define what you mean by best. Lowest cost? Lowest number of components? Lightest weight, smallest footprint, on and on.

    Either solution will work. Learning to use an RC timer has value, but the 555 IC is incredibly useful also and learning to use it is worth the effort.
     
    berend001 likes this.
  3. #12

    Expert

    Nov 30, 2010
    16,261
    6,770
    These might be helpful. I was writing a blog and these are part of the subject matter.
     
    berend001 likes this.
  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,979
    744
    berend001 likes this.
  5. berend001

    Thread Starter New Member

    Dec 5, 2012
    2
    0
    Thanks for all the reactions.

    I think dodgydave's idea is exactly what i'm looking for. Thanks a lot. I'm going to the local electronics store tomorrow to get all the parts.

    Hope seeing you on the forum!
     
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