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| Number | Title | Issue Date |
| 7221127 | Alternator with rectifier bridge in particular for motor vehicle The alternator comprises a wound rotor and a stator with a number of phases connected to a rectifier bridge equipped with switches (7) in the form of MOS type transistors, such as MOSFET type transistors, characterised in that the transistors (7) are v... | 05/22/2007 |
| 6392371 | Universal frequency electrical generator A power generator in which the rotor's mechanical rotation speed and the output frequency can be varied substantially independently of each other through electronic controls, to achieve results such as better match between speed and load regime of the pri... | 05/21/2002 |
| 4401937 | Control device for battery charging AC generator An output transistor is serially connected to a field coil in a battery charging AC generator to break and make a field current through it under the control of a control transistor to adjust a rectified voltage from the generator to a predetermined magnit... | 08/30/1983 |
| 4336486 | Dynamoelectric machines brushless supplemental excitation system For a dynamoelectric machine, excitation power is supplied by a main exciter having two field windings. A first field winding is driven by a pilot exciter which supplies base excitation (small signal) for the main exciter. Forcing excitation (large signal... | 06/22/1982 |
| 4218646 | AC Feeding apparatus and rotating field apparatus having AC feeding apparatus An AC feeding apparatus which comprises a plurality of series solid state switch groups connected in parallel and with each series solid state switch group comprising N solid state switches connected in series. AC windings are provided for n(nࣙ1) phase ... | 08/19/1980 |
| 4210857 | Field exerting and regulator circuit for a brushless alternator A field regulating circuit for a brushless alternator or the like in which a field winding is disposed on a rotor and energized from the secondary winding of a rotary transformer which has its primary winding connected to be energized from a circuit contr... | 07/01/1980 |
| 4138634 | Automatic voltage regulator for an AC generator with a field winding An automatic voltage regulator for an excited AC generator comprising at least one controlled rectifier for conducting the field current of the generator, a trigger signal supplying means for supplying a trigger signal to the controlled rectifier when the... | 02/06/1979 |
| 4118749 | Field overvoltage protecting apparatus for synchronous machine An apparatus for protecting a synchronous machine from a field overvoltage is disclosed. The apparatus comprises a field excitation control circuit which is impressed with the armature voltage of the synchronous machine so as to provide a DC power supply ... | 10/03/1978 |
| 4031455 | Excitation circuit for brushless synchronous welding generators An excitation control circuit for a brushless synchronous welding generator, in which the stator-mounted excitation winding is fed from a separate voltage source via two parallel-connected power transistors with independently adjustable base circuits, one... | 06/21/1977 |
| 4015188 | Welding generator exciter control An apparatus and a method for controlling the exciter current in a welding generator such that the open circuit voltage of the generator is regulated within suitable limits prior to arc start. A voltage controlled relay is connected to the generator's out... | 03/29/1977 |
| 3947744 | Electric truck having elevated load potential energy recovery with means to adjust rate of carriage descent A lift truck energized from a battery to supply pressurized fluid to elevate a load-supporting carriage has an energy recovery system for converting kinetic energy of the elevated carriage into battery charging current including a fluid motor through whic... | 03/30/1976 |
