Connect with us

dark detector using 555 timer

Discussion in 'General Electronics Discussion' started by jepoy12, Sep 8, 2011.

Scroll to continue with content
  1. jepoy12

    jepoy12

    20
    0
    Aug 19, 2011
    hi Im trying to change the sensitivity of this circuit.
    what part should I change?
     

    Attached Files:

    • dsa.jpg
      dsa.jpg
      File size:
      14.3 KB
      Views:
      2,578
  2. duke37

    duke37

    5,277
    734
    Jan 9, 2011
    Assuming the circuit works as it should but with the wrong sensitivity, increasing the 4.7k resistor will give more sensitivity and decreasing it less sensitivity. You could cosider replacing the resistor with a potentiometer to set the sensitivity to where you want.
     
  3. jepoy12

    jepoy12

    20
    0
    Aug 19, 2011
    Thanks. done working on it.

    [​IMG]
    [​IMG]
     
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

-