Uploaded by Jeanette Bacic

Electric Motor Lesson & HW - Loop & Armature Motor

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Single Loop Motor & DC Armature Motor
Explanation & Diagrams
https://www.walter-fendt.de/html5/phen/electricmotor_en.htm
LHR  Electron flow
LHR  Electron flow
Repel
Repel
Loop turns
counter- clockwise
Loop loses electron-flow
temporarily, momentum
keeps it turning.
Loop loses electron-flow
temporarily, momentum
Keeps it turning.
Loop continue to turn
counter- clockwise because
of split-ring commutator
even though the purple is
now on the right.
Force - Right Hand Rule
Turns CLOCKWISE
B
C
A
Magnetic field lines
D
Current: goes from + to –
(conventional)
B
Rotor continues
to turn this way
because of
momentum.
Magnetic field lines
A
C
D
No current flow as
the gaps are next to
the brushes.
Only the momentum
of the rotor keeps it
turning.
Force - Right Hand Rule
Turns CLOCKWISE
C
B
D
Magnetic field lines
A
Current: goes from + to –
(conventional)
Electron Flow
N
Current Flow
N
Current Flow
N
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