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Videos tagged with motor (38)

Physics Demo -- Magnetic Motor

Physics Demo -- Magnetic Motor

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:29 | 68279 views

A toroid with three different wire windings is connected to 220 VAC 3-phase voltage. The voltage phase of each of the three windings lags 120 degrees behind the next, creating a changing induced magnetic field. The changing field causes...

Coupled Air Carts

Coupled Air Carts

MIT Department of Physics Technical Services Group

Added over 5 years ago | 00:07:38 | 48690 views

Two or more air carts are connected by springs on an air track. When this system is at resonant frequency, symmetrical patterns called normal modes appear. The normal modes are shown in both undriven and driven cases. In the undriven ...

Waves on a Chain

Waves on a Chain

MIT Department of Physics Technical Services Group

Added over 5 years ago | 00:01:26 | 42313 views

A long beaded chain is looped over a motor pulley. When the motor is turned on, a disturbance in the chain causes waves to propagate through it. When the motor is brought up to full speed and the chain is knocked off the pulley it will...

MIT Physics Demo -- Driven Mechanical Oscillator

MIT Physics Demo -- Driven Mechanic...

MIT Department of Physics Technical Services Group

Added over 6 years ago | 00:01:07 | 36013 views

A mass on a spring is driven by a large geared motor apparatus, and exhibits resonance at the appropriate frequency. Below resonance, the driving motion is in phase with the motion of the mass. At resonance the mass is 90 degrees out of...

MIT Physics Demo -- Centrifugal versus Centripetal Motion

MIT Physics Demo -- Centrifugal ver...

MIT Department of Physics Technical Services Group

Added 6 years ago | 00:01:18 | 32987 views

A wooden ball is attached to the rim of a spinning wheel. The ball is held in place by a string. When the spring is cut, the ball flies in a straight tangent to the wheel.In the camera's frame of reference, the ball constantly acceler...

B.W.D. Scooter Custom BLDC Motor - Test #1

B.W.D. Scooter Custom BLDC Motor - ...

scolton

Added 5 years ago | 00:04:03 | 28005 views

Fast-forward to 1:50 to see it spinning! This is test #1 of the B.W.D. Scooter's first custom-built motor. The scooter is this year's Edgerton Center Summer Engineering Workshop project. B.W.D. stands for either "both wheel drive" or "b...

B.W.D. Scooter Test Drive #2

B.W.D. Scooter Test Drive #2

scolton

Added 5 years ago | 00:02:29 | 27336 views

The B.W.D. Scooter is an electric kick scooter with Both Wheels Driven by custom-built brushless DC hub motors. For more information, visit: http://web.mit.edu/first/scooter The hub motors built into each wheel are 3-phase, 14-pole...

Rotating Candles in a Dome

Rotating Candles in a Dome

MIT Department of Physics Technical Services Group

Added 4 years ago | 00:04:33 | 24213 views

A row of candles are placed inside a see-through dome on a rotating platform. When the platform rotates, air inside the dome gets swung to the outer part of the dome, creating higher density air at the outer rim, and lower density air i...

B.W.D. Scooter Test Drive #1

B.W.D. Scooter Test Drive #1

scolton

Added 5 years ago | 00:03:05 | 23911 views

The B.W.D. Scooter is an electric kick scooter with Both Wheels Driven by custom-built brushless DC hub motors. For more information, visit: http://web.mit.edu/first/scooter The hub motors built into each wheel are 3-phase, 14-pole bru...

B.W.D. Scooter Custom BLDC Motor - Speed Test

B.W.D. Scooter Custom BLDC Motor - ...

scolton

Added 5 years ago | 00:00:23 | 23201 views

This is a speed test of the B.W.D. scooter's first custom-built hub motor. The scooter is this year's Edgerton Center Summer Engineering Workshop project. B.W.D. stands for either "both wheel drive" or "brushless wheel drive," since the ...

RazErBlades: Street Testing

RazErBlades: Street Testing

equals zero

Added 4 years ago | 00:02:36 | 23071 views

With a skilled test pilot at the helm, the stealthy electric propulsion really shines... and it's not just the power LED either.

Brushless Motor Control

Brushless Motor Control

scolton

Added almost 5 years ago | 00:01:10 | 22740 views

This video shows a significant difference between square-wave commutated and sine-wave commutated brushless motor drive. The motor (from the B.W.D. Scooter project, can resonate with the scooter frame at certain speeds when driven with o...

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