I am trying to amplify the power so that the power from my digital to analog converter can drive my motor using power amplifier LM675. I just replaced the RL with my motor, but do not know how to set it. I need to know that how can I verify what is the power amplifier gain without having to measure the voltage & current? How I can reduce the amplified power so that it is not excessive or will not damage my motor? I am trying to make the motor to turn in both cw and ccw directions, but after implementing this amplifier, it only turns cw. How can I make it turn in both directions? I have a dual power supply. Do I need to use the circuit? If yes, how can I set the amplifier gain? Please help me your advise will be appreciated.
