Let me start by warning everyone that I'm an electronics newb. :blush: I am trying to modify a Hitec 7955 titanium gear servo for use with unregulated three cell lipo. I will still be controlling the servo from a hobby rc remote. My first thought was to replace the servo board with one that can handle the ~12v. I have been unsuccessful in finding a suitable replacement board. A few standard size 12v servos are available from Chinese manufactures but I cant seem to find just a 12v board available.
My second thought was to add a relay circuit between the board and the motor, thus isolating the board from the high voltage. I believe that I need a h-bridge mosfet circuit between the board and the motor. Space and weight are at a premium so an integrated circuit would be necessary. Can I control the h-bridge with what were the motor feed terminals off the original board? The board would be sending -6v to +6 volts depending on the desired rotation. I'm not clear if I can use this -6v to +6v output as the switching input for the mosfet h-bridge.
I really appreciate any help that I can get to move this project forward.