Matches 1 - 38 out of 38


Match Document Document Title
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...
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...
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...
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...
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...
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...
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...
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...
3796954 WATTHOUR METER ASSEMBLY HAVING AN AUXILIARY LAG PLATE MOUNTED ON A POTENTIAL FLUX RETURN BAR  
An induction type watthour meter is provided with a variable resistance lag loop mounted on its potential stator, and an auxiliary lag plate, having a fixed resistance, rigidly mounted around a...
3790888 LAG ADJUSTMENT MEANS FOR A WATTHOUR METER  
A watthour meter is provided with an improved reactor assembly for a lag plate. The reactor assembly is linearly adjustable to selectively and precisely vary the inductance of the lag plate so...
3710245 INDUCTION METER HAVING POWER-FACTOR-ADJUSTER  
The voltage winding of an induction meter directs voltage magnetic fluxes through a first path including the armature of the meter and a second path spaced from the armature. An adjustable...
3638116 WATT-HOUR METERS WITH PHASING PLATE PHASED AFTER METER COMPLETION  
The phasing of electricity meters (watt-hour meters) i.e., producing the proper phase relationship between its two interacting alternating magnetic fields, is performed by a punching operation...
3611137 WATT-HOUR METER WITH SHIFTING-RELUCTANCE ACCURACY ADJUSTMENT  
A watt-hour meter for alternating current is adjusted for accuracy of measurement of light loads, and for accuracy of phasing. The former shiftable plate is replaced by a fixed plate combined with...
3609544 WATT-HOUR METER WITH SHIFTING SCREW AS LIGHT LOAD ADJUSTMENT  
A watt-hour meter for alternating current is adjusted for accuracy of measurement of light loads by shifting a unitary part, preferably a screw unit, which is the only part that moves for this...
3551810 THREE-WIRE INDUCTION METER WITH MINIMIZED UNBALANCE ERRORS  
3500199 INDUCTION METER HAVING SATURABLE PATH FOR WORKING VOLTAGE MAGNETIC FLUX  
3484690 THREE CURRENT WINDING SINGLE STATOR NETWORK METER FOR 3-WIRE 120/208 VOLT SERVICE  
3212005 Phase adjusting means for induction meter including voltage flux shunt path having a shorted turn thereon  
3212006 Light load compensation device for polyphase network meter including an inductor with a saturable flux path  
3212007 Overload compensating device for induction meter including a current pole flux shunt with shorted loop thereon  
3150317 Single stator three-phase network induction watthour meter  
2954525 Single phase watthour meter  
2947942 Light load device for induction watthour meter  
2913667 Multielement induction device  
2905901 Alternating-current responsive devices  
2900604 Electrical measuring device  
2900603 Compensating unit for watthour meters  
2879476 Arrangement of lag and light load compensators in an induction watthour meter  
2879475 Compensating unit for wathour meter  
2875406 Watthour meter phase adjuster  
2871448 Alternating current responsive devices  
2858508 Lag plate  
2849680 Electrical instruments responsive to alternating energization  
2836795 Adjustable lag compensator  
2832048 Adjustment assembly for watthour meters  
2830270 Watthour meter light load plate  
2813253 Watthour meter shunt assembly  
2788488 Method of phasing watthour meters and apparatus  

Matches 1 - 38 out of 38