Questions tagged [universal-motor]
The universal-motor tag has no usage guidance.
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PWM Universal Motor Control
I recently posted a question about a circuit I had that wasn't working, and received some feedback indicating that most of my circuit was just... not good. Original post
I drew up a new schematic, ...
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What is wrong with this DC power supply and motor control?
I have built a motor controller for my sewing machine that controls the motor speed rather than just controlling the power - in use, it is like the difference between using a soldering iron with ...
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Digital interface to regulate blender motor
A typical blender uses a universal-type motor which has a knob to toggle between different taps on the field coil for different speed settings. I wish to replace the knob with a touch-screen or a push-...
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Universal AC Motor Brush Rotation Angle
Considering adding reversing capability to a Porter Cable 690LR (router) universal AC motor for use as a spindle motor. Yes, there are better alternatives but this is to finish someone else's wood-...
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Universal motor – electronically reverse rotation
I would like to modify a sewing machine motor so I can reverse its direction electronically.
Domestic sewing machine motors are universal motors with two wires – the input AC is connected through the ...
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Forcing multiple-quadrant TRIAC operation through gate ringing
I got the possibly hare-brained idea to cause a single TRIAC gate pulse to go positive and negative, and thus fire in (maybe not all four but) more quadrants:
ThecLTspice simulation seems to show ...
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What does forward rotation of armature mean?
Does forward rotation of motor mean clockwise or anticlockwise?
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How can I determine rotation direction when rewinding armature coils
I want to rewind a burnt armature coils of universal motor. Which segment of commutator with respect to the armature slot should I begin with in order to make it rotate clockwise? I will apreciate if ...
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AC universal motor changed rotation direction after armature rewinding
I repaired the armature of my juicer machine by rewinding it because it got burnt.
The machine should rotate clockwise in order to operate normally, but after rewinding, it is now rotating anti-...
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Most accurate way to measure universal (AC) motor current?
I'm designing a control circuit for a universal (AC) motor (single phase, brushed).
I've simulated the control circuit and it works as expected.
Circuit below is controlled by a STM32G4 series ...
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Old sewing machine motor filter/capacitor schematic/wiring
I have an old Pfaff 97 sewing machine that suddenly started to run at full speed regardless of the pedal input.
I disassembled and checked the foot pedal and it is working perfectly.
I took out the ...
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Blender - Universal Motor Speed Control
I disassembled a blender and removed the motor. It is a universal-type motor, and it appears that there are different taps on the field coil for different speed settings (I never really understood why ...
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MOSFET failed when I connected an AC universal motor
I connected the following AC chopper circuit to control the brightness of a lamp and it is working as expected.
Expected behavior: I observe that when the pulse is 0, the light is completely off. When ...
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universal motor wiring help needed
I have a NOS universal ac/dc motor and don't know how to wire it. The motor has 4 unmarked leads. Two black, one red and one white. The motor label is marked VOLTS 115, CYCLES 60, AMPS. 1.0, SER. ...
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Can a repulsion motor be connected like a series or shunt DC motor?
Recently I bought an old repulsion-start induction-run motor made by Asincron in Argentina, exactly identical to the one in this video.
I can't find much documentation and information about how ...
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