A method of compound winding for dynamos and motors. The field is wound
in series, and in addition thereto there is a shunt winding connected
from brush to brush only, thus paralleling the armature. (See Winding,
Long Shunt.)

Synonyms–Series and Short Shunt Winding.

A method of automatic regulation applied to alternating current dynamos.

A method of winding a generator or motor, in which one of the
commutator-brush connections is connected to the field-magnet winding;
the other end of the magnet winding connects with the outer circuit. The
other armature-brush connects with the other terminal of the outer
circuit.

Winding adapted for armatures of multi-polar dynamos or motors.

A winding of an electro-magnet, in which separate coils are wound on the
core, so that one or any number may be used as desired in parallel or in
series. For each coil a separate binding post should be provided.

A method of winding disc and drum armatures. It consists in lapping back
each lead of wire towards the preceding lead upon the commutator end of
the armature. Thus taking the letter U as the diagrammatical
representation of a turn of wire in connecting its ends to the
commutator bars they are brought towards each other so as to connect
with contiguous commutator bars. This carries out the principle of
keeping the two members of the U moving in regions of opposite polarity
of field, so that the currents induced in them shall have opposite
directions, thus producing a total current in one sense through the bent
wire.

A winding which (S. P. Thompson) may be treated as a drum winding
extended radially, the periphery corresponding to the back end of the
drum. The magnet poles are generally placed so as to face the side or
sides of the disc.

A method of winding a generator or motor in which a shunt winding is
used for the field magnets and in which also a second winding of the
magnet is placed in series with the outer circuit. (See Winding,
Series–Winding, Shunt.)

The object of compound winding is to make a self-regulating dynamo and
this object is partly attained for a constant speed.

The characteristic curves of shunt and series winding are of opposite
natures. The first increases in electro-motive force for resistance in
the outer circuit, the latter decreases under the same conditions. If
the windings are so proportioned that these conditions for each one of
the two windings are equal and opposite, it is evident that the
characteristic may be a straight line. This, however, it will only be at
a single speed of rotation.

The rush of air particles from a point connected to a statically charged
condenser.

In a dynamo the real air gap between the armature windings and pole
pieces is sometimes thus termed.