Abstract: In the disclosed outdoor lighting control, angular reflectors (52) direct vertical light passing through a translucent dome (38) onto a vertically oriented photocell (24) and a rigid vertically-adjustable sheet (54) between the photocell and the reflectors regulates the operating point of the photocell. The backs of the reflectors, and a socket (14) projecting vertically from a base (12) under the dome, shield the vertical photocell from horizontal light.

Abstract: In the disclosed motor, a stator and a rotor are movable relative to each other about a common axis. The stator has stator poles with radially directed stator teeth arranged in a circle around the axis and the rotor includes a first axial portion and a second axial portion with a permanent magnet located between them. The first portion has a plurality of rotor teeth extending axially along the periphery of the first portion and the second portion has a substantially cylindrical surface.

Abstract: The disclosed apparatus operates a load in one mode in response to one cyclically occurring event and in a second mode at a specified time in the cycle regardless of the phase of the one event in the cycle. According to a specific embodiment, the apparatus turns on lights at sunset and turns them off at a later nighttime hour, preferably the same hour each night. A generator stores signals in an accumulating memory at one rate during daylight hours and at a faster rate, preferably twice the daylight rate, during nighttime hours. When the memory content reaches a preset level during the night, it turns off the switch that had turned on the lights at sunset and empties itself of storage until sunrise.

Abstract: In the system disclosed a driving circuit repeatedly scans along a plurality of aligned electrodes in an enclosure filled with ionizable gas, by sequentially grounding the aligned electrodes and repeating the process cyclically. Within each cycle, a pulse width modulator energizes an anode opposite the electrodes for a period of time corresponding to an input value. Sequential glow discharges thus occur between the cathodes and the anode over a portion of the anode length. The discharges occur with sufficient rapidity so that they are observed as an illuminated portion of a bar formed by the electrodes. A second set of electrodes is scanned and an opposing anode energized to produce two illuminated bands separated from each other. Desired upper and lower set point limits for the input quantity determine the lengths of the bands and the separation between them.

Abstract: The rotor structure of a synchronous inductor motor, such as a stepping motor, is of a compact, simplified and high-efficiency construction consisting essentially of wholly planar annular laminations which include stacks of thin externally-toothed elements bonded together and with relatively thin axially-magnetized annular washer material extending radially from a relatively large central shaft fully to the roots of the stack teeth.