The HW-687 Mini DC Speed Controller is a versatile PWM governor designed for low-voltage applications. Unlike simple resistors that waste energy as heat, this module uses high-frequency PWM to pulse the power, ensuring high efficiency and maximum torque even at low speeds. It’s equipped with a high-current resettable fuse and a high-quality potentiometer that includes a physical “click” to turn the power completely off.
Key Features
Ultra-Wide Voltage Range: Works with any DC source from 3V up to 35V.
90W Power Handling: Compact but capable of driving motors or LEDs up to 5A.
Integrated Power Switch: The potentiometer knob doubles as an ON/OFF switch.
Safety First: Features a built-in self-recovery fuse to protect your circuit from overcurrent.
Miniature Design: Easily fits into small DIY enclosures, hand-held gadgets, or toy cars.
Technical Specifications
Feature
Specification
Model
HW-687 / ZK-MG
Input Voltage
3V to 35V DC
Control Power
Max 90W
Quiescent Current
0.015A (Standby)
PWM Duty Cycle
1% to 100%
PWM Frequency
20 kHz
Dimensions
30mm x 24mm x 15mm
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