H Bridge Solar Motor Controller

This is a proof of concept for a solar panel motor controller. It uses a couple of operational amplifiers coupled to a mosfet H Bridge. The two potentiometers represent light dependent resistors which control the high and low output from the op amps.( *IMPORTANT- ldr's by themselves won't work the input must be drawn from a resistor and an ldr voltage divider ldr at the bottom. This creates the voltage drop.) Those input voltages are compared to the voltage at the voltage dividers shown at the bottom of circuit. In theory, those reference voltages would actually be another light dependent resistor + resistor, not shown here for Simplicity. In practical use only one of the op amps would be high or low output at a time, so to see how this works please adjust one potentiometer at a time to change the flow of current through the motor/mosfets and you will see it forward and reverse. Otherwise, if both are high or low, circuit will fail. I believe this is the simplest way to do this (using two p-channel and two n-channel mosfets rather than four n-channel mosfets)

published 3 years ago