Abstract:
Method and apparatus for detecting both the magnitude and direction of any deviation in the pilot-subcarrier wave by conventionally separating the pilot carrier, regenerating and shifting its resultant signal by 90* and comparing it with a signal derived from the multiplex signal to produce a signal indicative of the magnitude of deviation. Simultaneously a reference signal is obtained from the original multiplex signal which is in phase with the comparison signal. The deviation signal and the reference signal are then demodulated to produce a directional voltage.
Abstract:
A universal adaptive audiovisual teaching device having visual display means, sound reproducing means and input means for a response by the user. A decision system is provided having a basic decision unit, a stepping unit and timing unit. The decision unit includes a control memory, a peripheral memory and a selector. The decision unit receives information from the visual, sound and response input units, evaluates and compares the response to the audio-visual units and directs movement of the audio-visual units to appropriate activating positions.
Abstract:
AN ANNULAR CORE FOR A TOROIDAL COIL IS HELD IN A SHUTTLELESS WINDING MACHINE BETWEEN TWO ROLLERS ROTATED ABOUT FIXED AXES AND A THIRD, IDLING ROLLER MOUNTED ON A SPRING-LOADED ARM. THE CORE IS AXIALLY SECURED ON THE PLASTIC OR RUBBERCOATED ROLLERS BY FLANGES ON THE SAME, THERE BEING AT LEAST THREE FLANGES ON EACH ROLLER, EACH FLANGE BEING ALIGNED IN A COMMON PLANE WITH CORRESPONDING FLANGES ON THE OTHER TWO ROLLERS. THE FREE OF THE CONDUCTOR BEING WOUND ON THE CORE IS LED FROM THE CORE OVER ONE OF THE ROLLERS TO A SPRING-
LOADED CLAMP. THE SPRING TENSION ON THE ROLLER CARRYING ARM IS ADJUSTABLE, AND THE ARM MOVEMENT IS LIMITED BY A STOP.