bluebastide
New Member
Hi
I am looking for a simple circuit diagram that would trigger on two 12v circuits on my car based on the voltage level of the DRL input to my DRL/High beam bulb.
These are things to take care of:
1- DRL in Canada is mandatory on all cars since the 90's. In automatically either switch on a bulb in one of the headlights or, like in my car, sends either 4.7v to 6volts to the HIGHBEAM Bulb when I turn the ignition on or sends 12V to the same bulb when I turn the HIGHBEAM on. Therefore my HIGHBEAM bulbs act as DRL.
2- I want to filter the input voltage and turn two relays or triacs (or whatever) ON based on this simple algorythm :
A- No voltage = All circuits open - no bulb on
B- Any voltage say over 1V = Circuit 1 closed
C- Voltage above a certain threshold = Circuit 2 closed
3- I would use the circuit 1 closed to feed 12V (from the battery) to a new set of Angel eyes and circuit 2 closed to feed 12V (from the battery or from the input of this circuit) to the HIGHBEAM Bulb.
4- Due to the CAR environment (humidity, ...) a simple, cheap and compact circuit should be looked at.
Thanks for your toughts and ideas
I am looking for a simple circuit diagram that would trigger on two 12v circuits on my car based on the voltage level of the DRL input to my DRL/High beam bulb.
These are things to take care of:
1- DRL in Canada is mandatory on all cars since the 90's. In automatically either switch on a bulb in one of the headlights or, like in my car, sends either 4.7v to 6volts to the HIGHBEAM Bulb when I turn the ignition on or sends 12V to the same bulb when I turn the HIGHBEAM on. Therefore my HIGHBEAM bulbs act as DRL.
2- I want to filter the input voltage and turn two relays or triacs (or whatever) ON based on this simple algorythm :
A- No voltage = All circuits open - no bulb on
B- Any voltage say over 1V = Circuit 1 closed
C- Voltage above a certain threshold = Circuit 2 closed
3- I would use the circuit 1 closed to feed 12V (from the battery) to a new set of Angel eyes and circuit 2 closed to feed 12V (from the battery or from the input of this circuit) to the HIGHBEAM Bulb.
4- Due to the CAR environment (humidity, ...) a simple, cheap and compact circuit should be looked at.
Thanks for your toughts and ideas