Introduction: Brushless DC Electric Motor (with Hall Sensor)
This DCelectric motor project uses a Hall sensor to detect the position of the rotor and turn on the electromagnet in the precise moment.
Step 1: Overview of Device
Step 2: Circuit Diagram & Main Components
Sensor: UGN-3503-U hall sensor
IC1: LM358N (dual OP amp)
IC2: CD4001 (quad NOR gate )
FET1: IRFD120 (N-channel power mosfet)
This circuit is the same I used in my previous post "magnetic pendulum" . For additional details, refer to post.
Step 3: Hall Sensor
Step 4: Direction Detector
Step 5: 20mS Monostable ( Electromagnet ON Time )
Step 6: Output Mosfet Drives Electromagnet
Step 7: Electromagnet & Rotor Details.
IMPORTANT:
1) electromagnet north pole UP
2) rotor north poles OUT
3) hall sensor branded side UP