Prepared for DC 20A motor speed control circuit (mk2) TL494 PWM control IC is used. Integrated IRF1405 N-channel MOSFET output transistors in the two units have the speed setting potentiometer 10k 100k if the frequency setting is adjusted with... Electronics Projects, TL494 12V 24V DC Motor Speed Control Circuit 20A "motor control circuit, motor driver circuit, pwm circuits, tl494 circuit, " Date 2019/08/03