Hi everyone
I'm designing a circuit for a fog light switch in Europe. Here the fog light switch has to be a mono stable push button so I'm using a simple ne555 latching circuit as shown in the attachment.
12V power is connected to the headlights.
I've tested this circuit on many cars now and it works just fine. However I now have to use this circuit on a Chevy Suburban.
The problem I'm having is that sometimes when I turn the headlights on, the fog light will turn on as well. The circuit in it's hole doesn't function properly either. Sometimes the circuit latches but other times it doesn't.
Obviously there is a solution for this problem but I'm kind of clueless atm.
Could it maybe be resolved by using a bigger capacitor?
Thanks
I'm designing a circuit for a fog light switch in Europe. Here the fog light switch has to be a mono stable push button so I'm using a simple ne555 latching circuit as shown in the attachment.
12V power is connected to the headlights.
I've tested this circuit on many cars now and it works just fine. However I now have to use this circuit on a Chevy Suburban.
The problem I'm having is that sometimes when I turn the headlights on, the fog light will turn on as well. The circuit in it's hole doesn't function properly either. Sometimes the circuit latches but other times it doesn't.
Obviously there is a solution for this problem but I'm kind of clueless atm.
Could it maybe be resolved by using a bigger capacitor?
Thanks
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