Armature, Load of.
The circumflux, q. v., of the armature, or the ampere turns of the same.
The maximum load which can be carried by an armature without sparking is
directly proportional to the radial depth of core and to the length of
the gap, and inversely proportional to the breadth of the polar span.
Armature, Multipolar.
An armature in which a number of poles greater than two is determined by
the field. A multipolar field is employed for its production.
Armature, Neutral.
An armature of a magnet or telegraph relay which is not polarized or
magnetized.
Synonym--Non-polarized Armature--Neutral Relay Armature.
Armature of Influence Machine.
Pieces of paper pasted on the stationary plate of an electric machine of
the Holtz type.
Armature of Leyden Jar or Static Condenser.
The inner and outer tin-foil coatings of a Leyden jar or other
condenser.
Armature, Open Coil.
An armature of a dynamo or motor on which the coils are not joined in
one closed circuit, but have their ends or some of them separated, and
connected each to its own commutator bar or each set to their own bar.
Fig. 27. OPEN COIL RING ARMATURE.