Abstract: The present invention offers improvement of performance and efficiency of a compact fluorescent lamp by means of a series tuned LRC ballasting circuit. The resonant voltage rise in the circuit is utilized to increase the cyclic crest voltage necessary for lamp ionization. After ionization occurs, lamp current and power are clamped and regulated by the lower Q factor of the tuned circuit. The LRC circuit provides a square wave of voltage across the lamp with considerable reduction in noise and RF ringing. Since it is a tuned circuit, it operates at approximately unity power factor, at lower temperature, and with a net equivalent impedance that provides for maximum illumination, lamp life and efficiency.

Abstract: This invention relates to a self aligning, vacuum end effector which is capable of picking up objects which have a pick up surface which is not planar with the pick up surface of the end effector. The end effector is comprised of two parts: a nozzle base which fixedly attaches to an automatic assembly device, such as robotic arm; and a nozzle tip, which is the part of the end effector which actually comes in contact with the object to be picked up. The nozzle base and nozzle tip are secured together by a retention spring. The nozzle tip has a generally, semi-spherically shaped ball portion which is partly inserted into a bore within the nozzle base and rests against a quad ring which is secured within the bore. Consequently, when the nozzle tip makes contact with an object which is to be picked up and moved, the semi-spherical ball portion of the nozzle tip slides against the quad ring and the nozzle tip pivotally moves and aligns itself with the plane of the surface of the object to be picked up.

Abstract: In an induction motor rotor windings are connected together in a squirrel cage or a wound rotor .DELTA. configuration and stator windings are connected in series across a source. A capacitor is connected in parallel with one of the stator windings and this combination is connected in series with the other stator winding and is sized to form a quasi-double-resonant circuit. Both a single-phase and a polyphase motor can be configured as a quasi-double-resonant circuit with respect to each input power phase. A switching circuit employing compactors allows changing the rotation direction of the motor in a polyphase motor. A further polyphase motor is also described with primary stator windings connected to each power phase input and interleaved secondary stator winding, magnetically coupled to the primary stator windings but not directly connected to the power inputs. The secondary stator windings have capacitors coupled in parallel thereto to form parallel floating resonant circuits.

Abstract: An electromagnetic induction machine having inductively coupled primary, secondary and tertiary branch windings. The exciting current of the primary branch is transformed or reflected, via the inductive coupling, to an electrically separate secondary or tertiary branch. This reflected current in the isolated branch is sustained by connecting a capacitive load impedance to it. Thus, a floating parallel resonant circuit is formed which supplies the needed reactive component in lieu of the primary branch. Different winding techniques are then incorporated in the separate branches to maximize the available winding space and provide improved operating or performance characteristics.

Abstract: An induction motor includes a stator having at least one pair of stator windings and a rotor with rotor windings which are magnetically coupled to the stator windings via a circumferential air gap. The rotor windings are connected together in a squirrel cage or a wound rotor configuration. The stator windings are connected in series across the source. A capacitor is connected in parallel with one of the stator windings and this combination is connected in series with the other stator winding and is sized to form a quasi-double-resonant circuit, i.e., a quasi-parallel resonant circuit with the one winding and a quasi-series resonant circuit with the other winding. The stator windings are then grouped to form definite polar areas in the stator and a balanced rotating magnetic field is produced by all the windings throughout the entire load range when the motor is connected to a power source.