Monday, March 19, 2012

When ever you need to get an alarm or intimation after ten minutes ,the circuit shown below can be used.The circuit is nothing but  a monostable multivibrator based on IC NE 555.When ever you press the reset push button the green LED D1 glows after 10 minutes.
Circuit diagram with Parts list.
  • Assemble the circuit on a good quality PCB or common board.
  • The time duration can be set by varying the POT R5.
  • The switch S1 can be a push button switch.
  • The IC1 must be mounted on an IC base.


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