Abstract: A circuit for a phase connection of an inverter includes upper and lower bridge halves and respectively associated upper and lower bridge segments. Each bridge half has an outer switch and an inner switch connected in series. Each bridge segment has a diode and the inner switch of the associated bridge half connected in series. An output of the circuit is respectively connected to upper and lower potentials through the outer switches and is further connected to a center potential applied between the upper and lower potentials through each of the upper and lower bridge segments. Each bridge half further has a parallel power switch. The parallel switch of each bridge half is connected in parallel to the series-connected outer and inner switches of the bridge half. The output of the circuit is further respectively connected to the upper and lower potentials through the parallel switches.

Abstract: A method for pairing an identification (ID) transmitter and a base of an authentication device includes a programmer initializing the base by transferring an assigned base identification and a code to the base via a first link. The first link differs from a control link used by the ID transmitter to communicate a code to the base. The base then initializes the ID transmitter by transferring to the ID transmitter via a second link an assigned ID transmitter identification which corresponds to the base identification of the ID transmitter and the code. The second link differs from the other links. The ID transmitter is initialized in order to receive authentication from the base to cause the base to trigger an object assigned to the base when the ID transmitter has an ID transmitter identification corresponding to the base identification and communicates the code to the base via the control link.

Abstract: Below a predetermined threshold value of the rotation speed, a sinusoidal or trapezoidal current is applied to the winding sections of a brushless DC motor. Above the predetermined threshold value of the rotation speed, the brushless DC motor is operated with block commutation. The brushless DC motor thus produces a very uniform torque over a very wide operating range, and can at the same time be designed to be very compact.

Abstract: A method for pairing an identification (ID) transmitter and a base of an authentication device includes a programmer initializing the base by transferring an assigned base identification and a code to the base via a first link. The first link differs from a control link used by the ID transmitter to communicate a code to the base. The base then initializes the ID transmitter by transferring to the ID transmitter via a second link an assigned ID transmitter identification which corresponds to the base identification of the ID transmitter and the code. The second link differs from the other links. The ID transmitter is initialized in order to receive authentication from the base to cause the base to trigger an object assigned to the base when the ID transmitter has an ID transmitter identification corresponding to the base identification and communicates the code to the base via the control link.

Abstract: A method for optically determining the position of a movement element optically includes introducing the light emitted by a light source into an optical conductor which causes attenuation of the light. A light output coupler that moves in accordance with the position of the movement element couples out the light from the optical conductor and feeds the attenuated light to a light detector. Using the ratio of the light intensity emitted by the light source and that registered by the light detector, the attenuation of the light is determined and the position of the movement element inferred therefrom. The sensor is usable in an aggressive environment or one susceptible to interference because of the light source and the light detector may be arranged remote from the movement element.

Abstract: A position sensor module in which a position sensor delivers a signal output to an electronic evaluation unit for further processing, wherein the sensor module and evaluation unit are mounted on and electrically connected by a shaped sheet metal part to eliminate the need for tuning adjustments between the position sensor and the electronic evaluation unit.

Abstract: A position sensor module in which a position sensor delivers a signal output to an electronic evaluation unit for further processing, wherein the sensor module and evaluation unit are mounted on and electrically connected by a shaped sheet metal part to eliminate the need for tuning adjustments between the position sensor and the electronic evaluation unit.

Abstract: A short-circuit protection circuit for a switching output having a non-self-protected field-effect transistor to whose control electrode a control voltage can be supplied via an input. A series circuit comprising a timer, a switch-off release stage and a switch-off stage is provided at the control electrode of the non-self-protected semiconductor switch.