The Standard Electrical Dictionary
A telegraph key whose movements operate what is virtually a small magneto-generator, so as to produce currents of alternating direction, one impulse for each motion of the key. It is employed for telegraphing without a line battery, a polarized relay being used. In one very simple form a key is mounted on a base with a permanent magnet and connected to the armature, so that when the key is pressed downwards it draws the armature away from the poles of the magnet. If the magnet or its armature is wound with insulated wire this action of the key will cause instantaneous currents to go through a circuit connected to the magnet or armature coils.
The numerical value of key, magneto-electric in Chaldean Numerology is: 9
The numerical value of key, magneto-electric in Pythagorean Numerology is: 2
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"key, magneto-electric." Definitions.net. STANDS4 LLC, 2018. Web. 19 Feb. 2018. <https://www.definitions.net/definition/key, magneto-electric>.