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Electronic Timer Circuit

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  1. Mar 3, 2015 #1
    Dear

    I would like to design a simple electronic timer circuit by other NE555 IC or BC548 Transistor. I’ve got a circuit but it doesn’t work. Would you please me in this regard?

    Appreciate, if you would get back to me with tested circuit diagram at your best possible time.

    Regards

    Pervez
     
  2. jcsd
  3. Mar 3, 2015 #2

    berkeman

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    Staff: Mentor

    Can you post your schematic and a picture of your breadboard?
     
  4. Mar 3, 2015 #3
    you'll need at least 2 transistors to get a waveform, I don't think it can be done with one transistor and you said timer (aka counter), you can't make that with the parts your describing.
     
  5. Mar 4, 2015 #4

    jim hardy

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    2016 Award

    ???

    NE555 is the ubiquitous Signetics timer IC ,


    http://en.wikipedia.org/wiki/555_timer_IC

    Plenty of information here to help you figure out why your circuit doesn't work.
    http://my.ece.ucsb.edu/York/Bobsclass/2C/Tutorials/App notes/555an.pdf

    as Berkeman said, post a drawing of what you tried...
     
  6. Mar 4, 2015 #5
    the 555 produces pulses or waveforms, my mistake I saw the word timer and thought of counter. don't mind me I'm stupid today :wideeyed:
     
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