I wanted two things in my driving light project. Good bright halogen lights ( 60+ watts ), and protection against leaving them on by mistake. I came up with the circuit below. The chip turns on the relay ONLY if the driving light switch is ON AND the headlights are ON. My truck has a buzzer that warns you against leaving the headlights on...So I can only use these lights when the headlights are ON.
The NUD3160 chip has extremely low gate current (< 0.5mA ) so most any circuit you tie it into won't be affected. All I did was pull out the headlight switch, and find a wire (Brown) that gets energized when you turn on the headlights. You can imagine lots more uses for this cool chip, since it can turn on a relay, but it doesn't affect the circuit you connect to....
Manufacturer PN NUD3160LT1GOSCT-ND Digikey carries several types. Unfortunately it is surface mount. I believe it maxes out at 200mA load, so it will drive most relays. It is intended for automotive applications.
Arrrrgh...Evidently my schematic is too big to load, email me if you want [email protected] ( changed to Jpeg, hope this works )
The NUD3160 chip has extremely low gate current (< 0.5mA ) so most any circuit you tie it into won't be affected. All I did was pull out the headlight switch, and find a wire (Brown) that gets energized when you turn on the headlights. You can imagine lots more uses for this cool chip, since it can turn on a relay, but it doesn't affect the circuit you connect to....
Manufacturer PN NUD3160LT1GOSCT-ND Digikey carries several types. Unfortunately it is surface mount. I believe it maxes out at 200mA load, so it will drive most relays. It is intended for automotive applications.
Arrrrgh...Evidently my schematic is too big to load, email me if you want [email protected] ( changed to Jpeg, hope this works )
You must be registered for see images attach
Last edited: