Negative dc to possitive dc ?

Discussion in 'General Electronics Chat' started by caslor, Aug 28, 2014.

  1. caslor

    Thread Starter New Member

    Apr 20, 2010
    2
    0
    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)
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,770
    970
    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.
     
  3. caslor

    Thread Starter New Member

    Apr 20, 2010
    2
    0
    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
     
  4. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,770
    970
    You are welcome :)
     
    shortbus and ErnieM like this.
  5. MrSmoofy

    Member

    Jul 28, 2014
    112
    5
    http://www.allaboutcircuits.com/l_tos.html

    6. Restricted topics. The following topics are regularly raised however are considered "off-topic" at all times and will result in Your thread being closed without question:
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