PWM and power control schematics

Build powerful speed controllers and dimmers for 12V motors and lamps with this simple yet effective circuit. This kit utilizes a 7555 timer IC and a Mosfet to deliver up to 20A, perfect for controlling fans, motors, and halogen lamps. Unlock limitless possibilities for your projects!... [read more]

Build a powerful 5-position variable DC voltage supply for your fan or motor using this simple bridge rectifier circuit. Achieve approximately 1.4V per step and unlock exciting possibilities for your projects.... [read more]

Build precise DC motor speed control with innovative PWM circuits using just four ICs. Generate 15-bit PWM waveforms from microcontrollers or expansion boards for unparalleled motor speed regulation and design inspiration.... [read more]

Drive your stepper motor projects with this versatile circuit, capable of handling voltages from 5V to 18V and delivering up to 3.5A of current. Unlock precise motion control and build innovative robotics with this powerful, short-circuit protected, and temperature-compensated design.... [read more]

Slowly vary a 120 volt light bulb’s intensity with this ingenious circuit, utilizing an SCR and a 4017 decade counter for precise control, creating a mesmerizing linear brightness change.... [read more]

Build a precise soldering station with this innovative circuit, achieving temperatures from 280°C to 400°C. This design eliminates costly temperature sensors, utilizing your soldering iron’s resistance for accurate control and a reliable 400°C temperature setting.... [read more]

Unlock the potential of your projects with this advanced stepper motor driver, enabling powerful control and scaling for precision automation. This innovative circuit simplifies motor control, requiring just two pins for operation and supporting 5, 6, or 8 wire stepper motors. Maximize your designs with up to 1.5A output and 35V sustaining voltage, perfect for building robust and high-performance systems.... [read more]

Build your own intelligent fan control circuit with this detailed schematic. Utilizing a 15k ohm resistor, 10k ohm NTC thermistor, and a TL082 op-amp, this design allows precise temperature regulation for optimal fan performance. Achieve up to 4 amp fan control and customize fan speeds from 7 to 8 volts for enhanced cooling.... [read more]

Build a captivating 12V DC motor control circuit with precision and control. This schematic utilizes push-to-close buttons and suitable 1N4001 diodes for optimal performance, perfect for controlling curtains or other applications requiring adjustable light control.... [read more]

Build a dynamic zero-crossing switching circuit with a 5-amp triac, achieving precise power control through a variable duty cycle oscillator – unlock 1000W of potential!... [read more]

Build powerful PWM speed control circuits with the ubiquitous 555 timer. This guide reveals how to precisely control motor speed using adjustable resistance values, achieving everything from 5% to 95% duty cycles at a consistent 1kHz frequency. Unlock the potential of your 555 timer and design robust, variable-speed circuits for Tesla coils and beyond.... [read more]

Build a high-efficiency DC motor controller using pulse width modulation, eliminating heat waste and maximizing motor performance. This circuit utilizes a 4011 NAND gate and MOSFET to precisely control motor speed with a 1 megohm resistor and potentiometer.... [read more]

Build a powerful stepper motor controller for under $10 using readily available components and create your own robotics projects. This simple circuit, inspired by “The Robot Builder’s Bonanza”, provides a cost-effective solution for computer-controlled movement.... [read more]