En route to getting the off-the-peg DC-51 motor speed controller to better ... All electronic parts of this DC-51 motor controller circuit are connected to live mains and could kill you. This blog and ...

I was planning to use the opto-coupler speed sensor as part of a motor speed control – making the motor into the VCO ... due to dc resistance in the motor (see diagram). So that any speed droop when ...

Part one of this two-part article will cover the principles of alternating-current (AC) motor operation and control. Part two will cover design considerations for AC motors with variable speed drives ...