Remote indicator for displaying transmitted data by angular displacement

A remote indicator for displaying data contained in a transmited signal by angular displacement of a rotor, comprising:

• a rotatably mounted magnetic rotor;
• a plurality of controllable magnetic field generating means disposed circumferentially around said rotor;
• and,
• selection circuitry responsive to such data for sequentially activating alternately each of a plurality of said magnetic filed generating means for effectively displacing said rotor substantially to an angle representative of the value of said data, wherein
• said selection circuitry comprises sector selection circuit means for selectively enabling at proper polarity a pair of said generating means appropriate for controlling said rotor within a sector representative of such data and angle selection circuit means for sequentially driving the selected generating means by electrical pulses modulated to drive the rotor within said sector to said angle representative of such data,
• wherein said angle selection circuit means comprises memory means for storing for each of a plurality of angles within said sector requiring low values of energization for one or more of magnetic field generating means, command data effecting AC energization of said one or more magnetic field generating means.

A remote indicator for displaying data in a transmitted signal by angular displacement of a rotor, comprising:

• a rotatably mounted magnetic rotor;
• a plurality of controllable pairs of magnetic field generating means, each pair comprising:
• a core of magnetically permeable material having opposing core end faces disposed circumferentially about the rotor;
• coils disposed about the ends of said cores, said coils in series connected relationship and establishing a center tap connection and non-center tap coil ends;
• a positive voltage being applied to the center tap connection of the series connected coils;
• and
• switch means for selectively grounding non-center tap ends of said coils inducing a magnetic field direction within said magnetically permeable core;
• selection circuitry responsive to such data for sequentially activating said opposing pairs of magnetic field generating means for effectively displacing said rotor substantially to an angle representative of the value of said data, wherein said selection circuitry comprises sector selection circuit means for selectively enabling at proper polarity a pair of generating means via said switch means appropriate for controlling said rotor within a sector representative of such data and angle selection circuit means for sequentially driving the selected generating means by electrical pulses time modulated to drive the rotor within said sector to said angle representative of such data.