Car Light Switch Circuit

4,008

14

Posted

Introduction: Car Light Switch Circuit

This circuit may be used to automatically switch off an interior car light, with a time delay of 15 seconds or 3 minutes.
The light is controlled by a manual and a door switch.
By activating the manual switch or opening the door Q2 turns on for an instant in order to lead the output to the high level: the light goes on.  If the manual switch is activated or the door is open Q3 keeps on and the current flows through C3: the light backs off after 3 minutes.
By closing the door Q3 and Q5 switch off, while Q4 switches on. So the current flows through C1 and the light backs off after 15 seconds.
By deactivating the manual switch Q4 turns on after an instant (due to Q6), then the light backs off with no delay.





 

Share

Recommendations

  • Remote Control Contest 2017

    Remote Control Contest 2017
  • Arduino Contest 2017

    Arduino Contest 2017
  • LED Contest 2017

    LED Contest 2017

We have a be nice policy.
Please be positive and constructive.

Tips

Questions & Answers

Comments