An automotive alternator has a rotor including a first single coil Lundell portion and a second permanent magnet portion. Permanent magnet poles are axially aligned in spaced adjacency with the fingers of the magnetic members of the Lundell portion of the machine. The current through the field coil of the Lundell portion is controllable in magnitude and direction to control the output of the machine.

A method of sensing alternating current in a cable having at least a pair of longitudinal conductors each of the pair carrying a current equal or unequal in absolute value to the other in mutually opposite directions, is comprised of disposing a coil with its lateral plane adjacent the cable in a position whereby electromagnetic fields caused by the currents intersect primarily different portions of the coil and induce current in the coil, and detecting the induced current in the coil.

Electrolytic cell operable by alternating current for producing organometallic compounds electrolyzing a liquid electrolyte in the presence of a particulate consumable metal, wherein the cell includes a tubular metal vessel having a main shell, a top closure member mounted at the upper end of the shell and electrically insulated therefrom, a bottom closure member mounted at the lower end of the shell and electrically insulated therefrom, a tubular liquid permeable spacer of insulating material i...

Disclosed is an alternating light photometer comprising a light source, first and second measuring stations including means for holding material to be measured, first and second paths permitting illuminating light emitted by the light source to reach the first and second measuring stations, a light receiver, third and fourth paths permitting measuring light emanating from the first and second measuring stations to reach the light receiver, and means permitting light emanating from the first meas...

A magnetometer is disclosed in which a first coil provides a uniform magnetic field in a measuring region while a second coil provides a field gradient in the same region in the same direction. Each of the coils can be selectively driven by either a D.C. current source or an A.C. signal generator. A sample is suspended in the measuring region while currents are applied to both coils. At least one of the coils has A.C. current applied thereto. The A.C. force on the sample is measured to provide a...

Liquid alkylene/acrylic telomers predominantly terminated with functional groups are prepared from acrylic and lower alkylene units by carrying out the polymerization in the presence of a Lewis acid halide and an organic halide.

An alternating current motor comprising a combination of magnetic frequency tripler and induction rotor. The alternating current motor includes a three-legged core of which two legs serve as input leg having a coil wound thereabout and thereby constitute a linear reactor and a saturated reactor. The two coils are connected in series. The residual one leg serves as output leg which generates magnetic flux having tripled frequency by applying single phase input to the input legs. A rotor is rotata...

A rotor for an alternating current generator that includes a steel rotor core that carries a field coil supporting spool. The core has axially extending circumferentially spaced slots on its outer periphery that receive axially extending and circumferentially spaced ribs of the spool. The spool ribs are connected to spool end flanges. A field coil is wound on the spool and core. The inner turns of the field coil contact outer surfaces of the spool ribs and outer surfaces of the core located betw...

An alternating current generator having a first Y-form three-phase connecting circuit including three first windings connected with each other in a Y-form, a first rectifying circuit for rectifying currents output from output terminals of the three first windings, a second Y-form three-phase connecting circuit including three second windings connected with each other in a Y-form, and a second rectifying circuit for rectifying currents outputted from output terminals of the three second windings....

A non-rotatable, axially movable control ring is connected to the ring on the clutch input through a thrust bearing to control engagement and disengagement of the clutch input with the output. The control ring is biased to the clutch disengaged position by springs which are weaker than those biasing a loading plate to a stop cancelling out of the loading spring force. Energization of the magnet coil fixed on the control initially causes movement of the coil towards the armature fixed on the load...