Abstract: A sequential actuator for a radio frequency switch includes a rotor designed to be rotated in a designated rotational direction of the actuator and a stator defining with the rotor when the stator is energized an active torque curve of the rotor having asymmetric positive and negative torque curve portions. Magnetic elements are distributed between the rotor and the stator and define a detent torque curve of the rotor. In some examples, when the stator is energized, the rotor undergoes a first rotation from a position of partial angular overlap of a first rotor magnetic element with a first stator electromagnet to a position of angular alignment of the first rotor magnetic element with the first stator electromagnet.

Abstract: A sequential actuator for a radio frequency switch includes a rotor designed to be rotated in a designated rotational direction of the actuator and a stator defining with the rotor when the stator is energized an active torque curve of the rotor having asymmetric positive and negative torque curve portions. Magnetic elements are distributed between the rotor and the stator and define a detent torque curve of the rotor. In some examples, when the stator is energized, the rotor undergoes a first rotation from a position of partial angular overlap of a first rotor magnetic element with a first stator electromagnet to a position of angular alignment of the first rotor magnetic element with the first stator electromagnet.

Abstract: A data handling system receives analogue signals on a number of input lines by scanning the lines continually. The input signals are set into a register and after each scan their positions shifted by one place. A/D converters produce digital signals from these and a computer compares the digital signals with stored threshold data to yield a status binary 1 or 0 according to whether the inputs are inside or outside the threshold. Test signals are interleaved with the analogue signals. The status signals are assembled in a register and continuously recycled so that a constant stuck at 1 or stuck at O defect is at once recognized. The input lines are replicated and a majority vote is taken before any actuator is exercised.