Electric PT Cruiser circuit, need help.

Discussion in 'General Electronics Chat' started by thuemann, May 4, 2009.

  1. thuemann

    Thread Starter New Member

    May 3, 2009
    I need help with a conversion circuit. I'm converting a PT cruiser to plug-in electric.
    I got the car running but now I want to get the fuel gauge to monitor the battery voltage.
    It's been about 20 years since I've played with op amps in school and I don't remember a whole lot about how to use them. The specifics are as follows.
    Voltage to current inverting converter with input offset and span
    Input voltage 130 to 160 volts DC (Both pos and neg must be isolated).
    Output 8 to 18 milliamps inverted (130VDC =18mA and 160VDC = 8mA)
    Available power is 8 volts DC.
    Any help would be greatly appreciated.

    here's the link to the project. http://www.evalbum.com/2243
    Last edited: May 5, 2009