Скачать или смотреть DC motor speed controller circuit

This circuit uses a power source (likely a battery or external power supply connected via the red and black wires), a transistor or MOSFET component (the black component with three pins) to act as a switch or regulator, and a small DC motor with a fan blade attached.
The circuit controls the speed of the motor by regulating the amount of current or voltage flowing through it, often using a technique called Pulse-Width Modulation (PWM) he image provided shows a simple DC motor speed controller circuit. This circuit uses a power source (likely a battery or external power supply connected via the red and black wires), a transistor or MOSFET component (the black component with three pins) to act as a switch or regulator, and a small DC motor with a fan blade attached.
The circuit controls the speed of the motor by regulating the amount of current or voltage flowing through it, often using a technique called Pulse-Width Modulation (PWM).