JYQD-VH8500 High Voltage Sensorless BLDC Motor Controller High-voltage sensorless BLDC motor controller for 110/220VAC motors, rated up to 4A. Supports PWM and 0–5V analog speed control, reverse and multiple protections. The JYQD-VH8500 is a high-voltage sensorless BLDC motor controller designed for brushless DC motor applications requiring 110V/220V AC input and up to 4A operating current. It provides a practical solution for controlling brushless DC motors without Hall