This program illustrates how a shaker works.
Fleming's left hand rule
The Electrodynamic Vibrator works using the principle of Fleming's
left hand rule.
The 'Field' is produced by a permanent or electro magnet.
The 'Current' in the armature is provided by the power amplifier.
The 'Motion' is a direct result of the reaction between the two magnetic fields produced by the 'Field' and 'Armature Current'.
f = b i l where :-
f is the force or thrust in newtons (N)
b is the magnetic flux density in tesla (T).
i is the current in amps (A)
l is the length of the conductor (wire) in the coil (armature), in metres.
Note: In electrodynamic vibrator the force and acceleration are proportional to current.
Thus, the more force or acceleration required means the more current the amplifier will have to provide to the armature !
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