I want to take an input voltage that could be anywhere from 10V up to 15V and have it interface with 5V logic.
This is for automotive use, so depending on whether the car is running or not and what loads may be on the voltage in the vehicle could be 10V (engine cranking or low battery) to as high as 15V (alternator slightly overcharging).
How can I get this wide of a voltage range to work with 5V logic so that any voltage between 10-15V will give me a guaranteed "ON". Of course, off would be 0V.
I want to use this to monitor various switches in the vehicle to see if they are on or off (like ignition or accessories).
This is for automotive use, so depending on whether the car is running or not and what loads may be on the voltage in the vehicle could be 10V (engine cranking or low battery) to as high as 15V (alternator slightly overcharging).
How can I get this wide of a voltage range to work with 5V logic so that any voltage between 10-15V will give me a guaranteed "ON". Of course, off would be 0V.
I want to use this to monitor various switches in the vehicle to see if they are on or off (like ignition or accessories).