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| Number | Title | Issue Date |
| 7225096 | Method of controlling and correcting an asymmetric waveform Disclosed is a method of controlling an asymmetric waveform generated as a combination of two sinusoidal waves having a frequency that differs by a factor of two. A method according to the instant invention includes a step of sampling a generated asymmetric waveform... | 05/29/2007 |
| 7098560 | Flux probe for electric generator A flux probe (100) for measuring the rotor flux of an electric generator (10). The probe (100) is affixed to a probe carrier (102) and held within a stator coil slot (62) by affixing the carrier (102) to two opposing grooves... | 08/29/2006 |
| 7064504 | Control apparatus for brushless DC motor A control apparatus for a brushless DC motor that rotatably drives the brushless DC motor including a rotor having a permanent magnet, and a stator having stator windings of a plurality of phases that generate a rotating magnetic field for rotating the rotor, by a c... | 06/20/2006 |
| 6847201 | Compensation circuit for the phase shift in electric meters for direct connection The invention relates to a compensation circuit for the phase shift between a first input (3) for a voltage determination and a second input (4) for a current determination in electric meters for direct connection, whereby a DC-tolerant converter (5... | 01/25/2005 |
| 6016054 | Watt hour meter registration calibration method and apparatus A phase adjustment circuit is provided for use in an inductive drive utility meter that employs a current stator and a rotating disk. The phase adjustment circuit includes an impedance circuit and a first current limiting device. The impedance circuit has... | 01/18/2000 |
| 4782286 | Light load adjustment and air gap stabilization in voltage stators Non-magnetic metallic spacers are welded into the auxiliary air gaps of a voltage stator using welding passes arranged in a predetermined sequence. The presence of the spacers stabilizes the auxiliary air gap against change in light load adjustment. Seque... | 11/01/1988 |
| 4760332 | Phase lag and light-load adjust for voltage stator A kilowatthour meter includes a voltge stator having a phase lag and light-load adjust assembly which permits smooth adjustment of its phase lag adjust and its light-load adjust from either end of the voltage stator. Each adjustment provides the same effe... | 07/26/1988 |
| 4649337 | Phase lag adjustment in electric meter A phase lag adjustment in an electric meter includes a single-turn loop of large cross section encircling substantially the entire flux generated in a voltage stator which interacts which the disk of the electric meter. A variable inductor, in series with... | 03/10/1987 |
| 4213090 | Integral flux lagging and light load adjustment assembly for watthour meters A voltage magnetic section of a watthour meter includes a voltage flux lagging loop formed integrally with a platform part directly attached to the voltage magnetic core. Light load adjustment members are movably mounted on the platform which also carries... | 07/15/1980 |
