I've looked through some previous posts but nothing seems to cover what I'm after.
I have modified my son ride on car from 6v to 12v. The motors can take the increase (I know of several others that have done this and still running fine several years later) However the cheap plastic gearbox often fail due to the extra power. I'm trying to find some kind of automatic variable resistor that will slowly increase the power to 12V to stop the instant surge the gearbox goes through. In essence I want to regulate the power to begin at a low voltage and increase it to 12v over 2 or 3 seconds.
Any suggestions ?
I have modified my son ride on car from 6v to 12v. The motors can take the increase (I know of several others that have done this and still running fine several years later) However the cheap plastic gearbox often fail due to the extra power. I'm trying to find some kind of automatic variable resistor that will slowly increase the power to 12V to stop the instant surge the gearbox goes through. In essence I want to regulate the power to begin at a low voltage and increase it to 12v over 2 or 3 seconds.
Any suggestions ?