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| Number | Title | Issue Date |
| 7170270 | Control device The invention relates to a control device for operating a load circuit provided with an inductive load, comprising a control stage producing a pulse-width modulated control signal with measuring disconnection intervals provided in between said control signal, a powe... | 01/30/2007 |
| 7006761 | Control device for DC motors In order to design as inexpensively as possible a control device for DC motors which are provided with a commutator for feeding their motor windings which has at least four sliding contacts, this device comprising a modulation stage which generates at least one cont... | 02/28/2006 |
| 6975083 | Control for a half-bridge A control circuit, processor and half-bridge are provided for operating electric motors. The half-bridge includes a first electronic switch lying between a supply voltage and a phase tap, and a second electronic switch lying between the phase tap and ground. The con... | 12/13/2005 |
| 6927522 | Power supply unit In order to improve a power supply unit for a commutator of an electric motor, comprising a brush holder support with brushes arranged in it and interacting with the commutator, in such a manner that this can be produced as inexpensively and in as functionally relia... | 08/09/2005 |
| 6882121 | Control device In order to improve a control device for operating a load circuit having at least one electric motor, this control device comprising a control stage which generates a pulse width modulated control signal, a power stage supplying the load circuit and having an electr... | 04/19/2005 |
