i am a total numpty for this, but do know which end of a soldring iron to hold and how to take basic multimeter readings
i have a sensor output of 2.5 to 3.5 V DC
needs to be 0.5 to 4.5 V DC for a low current digital gauge
so i need to subtract 2.0 V from the input
and then multiply this by 4
as far as i understand i need a differential op amp for this, i have 5V to power this, or 13.0V from a battery / alternator
now i am stuck, how do i work out what parts i need and how to design the circuit ?
many tnx :)