commutator

listen to the pronunciation of commutator
Englisch - Türkisch
Englisch - Englisch
an element of the form ghg−1h−1 where g and h are elements of the group; it is equal to the group's identity if and only if g and h commute
an element of the form ab-ba, where a and b are elements of the ring, it is identical to the ring's zero element if and only if a and b commute
an electrical switch, in a generator or motor, that periodically reverses the direction of an electric current
mechanical device in a brushed DC motor that passes current from the brushes to the windings
The rotating part of an electric motor which contacts stationary carbon brushes to complete the electrical circuit
Part of electric motor rotor which conveys electric current to rotor windings
switch for reversing the direction of an electric current
a segmented bar section on an armature providing a place for the brushes to make contact with the armature windings
{i} device for reversing the direction of an electrical current (Electricity)
A split ring in a d-c generator, each segment of which is connected to an end of a corresponding armature loop
an element of the form ab-ba, where a and b are elements of the ring, it is identical to the rings zero element if and only if a and b commute
A device mounted on the armature shaft and consisting of a number of wedge shaped copper segments arranged around the shaft These segments are insulated from the shaft and from each other The motor brushes ride on the periphery of the commutator, and electrically connect and switch the armature coils to the power source
A piece of apparatus used for reversing the direction of an electrical current; an attachment to certain electrical machines, by means of which alternating currents are made to be continuous or to have the same direction
a ring of the copper wire endings from the surface of the armature When the armature turns, the commutator is contacted by brushes which slide over it and transmit the generated electricity on to be used
A fancy name for a switch For motors, it really means the part of the motor that switches the poles (the coils of wires) on and off at the right times
The rotating part of a DC generator
The top part of the armature Typically referred to as the Comm The comm takes the current the brushes
Part of rotor in electric motor which conveys electric current to rotor windings
A cylindrical ring or disk assembly of conducting members, individually insulated in a supporting structure with an exposed surface for contact with current-collecting brushes
Sliding electrical connection between motor windings and brushes
a split ring in a dc generator, each segment of which is connected to an end of a corresponding armature loop
A device that makes the electrical connection to the moving coil of a motor or generator It allows current to pass in or out of the coil while it rotates
A split ring device used in electric motors and generators to change the direction of electric current as the motor or generator turns
an element of the form ghg[−1]h[−1] where g and h are elements of the group; it is equal to the groups identity if and only if g and h commute
The part of a DC motor armature that causes the electrical current to be switched to various armature windings Properly sequenced switching creates the motor torque The commutator also provides the means to transmit the electrical current to the moving armature through the brushes that ride on the commutator
Sliding electrical connection between the motor winding and brushes
[A, B] = AB - BA
commutator length
The supremum, over all elements of a given group's derived subgroup, of their commutator lengths

The commutator length of \langle a,b|b^2=1\rangle is at least two, since there's an element of commutator length two in it.

commutator length
The number of multiplicands needed, at a minimum, to express a given group element as a product of commutators

In \langle a,b|b^2=1\rangle, the commutator length of aba^{-2}ba is two, since it equals (aba^{-1}b^{-1})(b^{-1}a^{-1}ba) but isn't a commutator.

commutator lengths
plural form of commutator length
commutator subgroup
The subgroup of a specified group generated by the larger group's commutators
commutator subgroups
plural form of commutator subgroup
commutators
plural of commutator
commutator
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