Abstract: A pulse-width demodulator and information storage device including a data ocessing clocking system and an independent data readout and recorder control clocking system. The data input may comprise a pair of words for each data collection cycle. By means of an index signal, which is synchronized with the data input, the device distinguished between each word of the data pair being processed. The device converts each pulse-width modulated word into a digital format and stores each pair of words alternately in one of a pair of shift registers. The readout is alternately from the other of the pair of shift registers to the recorder on command from the recorder.

Abstract: An analog signal processor that is particularly suitable for measuring, igrating and holding a single or a pair of analog signals. The input signal to the analog signal processor may be sinusoidal of relatively low frequency and of low signal strength and slowly varying phase such as may be obtained from a pair of capacitive plates used in electric field measuring devices. The analog signal processor includes an analog current to voltage convertor, a synchronous rectifier and an integrate and hold circuit. In practice the analog signal processor may be mounted on a rotating shaft and converts the very low differentially alternating current input to a proportional d.c. voltage output. The analog signal processor includes timing and switching circuits to provide the desired information about vertical, horizontal and inclined electric fields.

Abstract: A digital signal processor that is particularly suitable for converting an analog input signal into a stored digital signal for serial transmission in short and long time duration signals which will be indicative of the analog input signal. The system employs a digital gain control to maintain nearly uniform transmission signal levels, two parity generators to assure proper signal transmission, and a set-reset flip-flop shift register and logic system for controlling the output of the serially connected shift register containing the information to be serially transmitted.

Abstract: A low noise D. C. power supply system that is particularly suited for suping D. C. power from a stationary source to electronics equipment mounted on a rotating assembly. Brush and slip ring assemblies are used to transfer the D. C. power to the rotating assembly and brush noise is minimized by having non-inductive impedences on both sides of the brush and slip ring assemblies. Floating circuits are employed to transfer the D. C. power from the stationary assembly to the rotating assembly with the return reference ground being through the brush and slip ring assemblies to the stationary assembly. Higher than usual voltages are supplied to a capacitor mounted on the rotating assembly to charge the capacitor providing reserve energy storage, providing a voltage margin for further regulation and thus minimizing the effect of brush noise.