Hi
is any cheap-easy method to convert negative dc curent to possitive?
i have a board that has analog input and convert it to digital but it must be possitive analog
in the other hand i have a car sensor that is ground it to negative (works like a resistance ) that give also negative curent as an output signal
example :
lets say that the car has -12v ground curent, the temp resistor takes that curent and as it works gives output also negative but with diferent curent
bigger the temp then bigger and the output volt from the sensor(resistance)
is any cheap-easy method to convert negative dc curent to possitive?
i have a board that has analog input and convert it to digital but it must be possitive analog
in the other hand i have a car sensor that is ground it to negative (works like a resistance ) that give also negative curent as an output signal
example :
lets say that the car has -12v ground curent, the temp resistor takes that curent and as it works gives output also negative but with diferent curent
bigger the temp then bigger and the output volt from the sensor(resistance)