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)

 

You can't have negative current. You can have current flow in a system where the positive side is grounded (thus creating a negative voltage with respect to ground)

You also can't discuss automotive circuits on this site for safety reasons..

You can however stop what you are doing before you damage something and take the time to read all the educational material in the volumes are the top of this site.. please start with the basics and do not jump ahead.

 

thanks for not helping
my mistake.. i thought i was posting in an other forum that realy help

that is why in had never post in this forum.. now i notice that even i am from 2010 member was the first time by mistake

have a nice day mcgyvr.. i will get my help from the other forum and take the risk to '' destroy '' my car

 

You are welcome

 

thanks for not helping
my mistake.. i thought i was posting in an other forum that realy help

that is why in had never post in this forum.. now i notice that even i am from 2010 member was the first time by mistake

have a nice day mcgyvr.. i will get my help from the other forum and take the risk to '' destroy '' my car

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