Winding for operation of a three-phase stepping motor from a two-phase drive

A three-phase stepping motor adapted to be driven from a two-phase drive, comprising:

• (a) a moving member magnetically interacting with a stationary member;
• (b) the stationary member having n total poles, where n/6=an integer, comprising first, second, and third sets of poles, each pole having thereon a coil for magnetic energization thereof;
• (c) the first, second, and third sets having n/3 poles each;
• (d) the coils on the first set of poles and one-half of the coils on the third set of poles being connected to one phase of the drive;
• and
• (e) the coils on the second set of poles and the other half of the coils on the third set of poles being connected to the other phase of the drive.

A three-phase stepping motor adapted to be driven by a two-phase drive, comprising:

• (a) a moving member magnetically interacting with a stationary member;
• (b) the stationary member having first through twelfth poles, each pole having thereon a coil for magnetic energization thereof;
• (c) the first, fifth, sixth, seventh, eighth, and twelfth poles having the coils thereon wound in one direction;
• (d) the second, third, fourth, ninth, tenth, and eleventh poles having the coils thereon wound in the opposite direction;
• (e) the coils on the first, fourth, seventh, eighth, tenth, and eleventh poles being connected to one phase of the drive;
• and
• (f) the coils on the second, third, fifth, sixth, ninth, and twelfth poles being connected to the other phase of the drive.

A three-phase stepping motor adapted to be driven by a two-phase drive, comprising:

• (a) a moving member magnetically interacting with a stationary member;
• (b) the stationary member having first through twelfth poles, each pole having thereon a coil for magnetic energization thereof;
• (c) the first, second, third, seventh, eighth, and ninth poles having the coils thereon wound in one direction;
• (d) the fourth, fifth, sixth, tenth, eleventh, and twelfth poles having the coils thereon wound in the opposite direction;
• (e) the coils on the first, fourth, fifth, seventh, tenth, and eleventh poles being connected to one phase of the drive;
• and
• (f) the coils on the second, third, sixth, eighth, ninth, and twelfth poles being connected to the other phase of the drive.

A rotary, three-phase stepping motor adapted to be driven from a two-phase drive, comprising:

• (a) a cylindrical rotor having longitudinal, equidistantly-spaced teeth around the periphery thereof;
• (b) a stator having toothed poles radially disposed about the rotor, such that the teeth of the rotor and the teeth of the stator poles may magnetically interact to cause rotation of the rotor upon energization of the stator poles;
• (c) the stator poles comprising first, second, and third sets of equal numbers of poles, each pole having thereon a coil for magnetic energization thereof;
• (d) the coils on the first set of poles and one-half of the coils on the third set of poles being connected to one phase of the drive;
• and
• (e) the coils on the second set of poles and the other half of the coils on the third set of poles being connected to the other phase of the drive.