A solid state sensor consisting of at least two electrodes associated with a solid substrate exhibiting ionic conduction. The two electrodes are connected in an electrical circuit which facilitates measuring of peaking voltage signals generated by the sensor, the sensor being capable of generating peak electrical signals of more than a hundred millivolt while exposed to hot combustion gases resulting from air fuel mixtures changing between lean and rich fuel-air mixtures.

A solid state relay having a light-emitting diode, an array of series connected photodiodes and a field effect transistor is described. The light-emitting diode is optically coupled to the array of photodiodes. The conductive state of the transistor is determined entirely by the voltage developed by the array of photodiodes.

Clock signals, data words and qualifier signals are received via monitor probes during a data acquisition mode, selected data words being stored in a memory in response to the clock and qualifier signals. The stored data words may then be displayed in a tabular or a map format on a cathode ray tube screen. Data words may be acquired randomly, i.e., in a free-running sampling mode, or acquired selectively by using pattern recognition and delay trigger circuits. Using the tabular display format, d...

A television tuner arrangement is disclosed including a wide band signal selecting circuit having a solid state voltage variable capacitance selectively controllable in accordance with the level of applied voltage and a channel selector control for controlling the voltage levels applied thereto. The control illustrated herein includes a selector, actuatable to a plurality of channel selection settings, a cylindrically shaped structure providing an external surface of conductive material, and a p...

A solid state color television camera having a color filter consisting of first and second color filter elements through which red and green primary color lights pass and a third color filter element through which a blue color light and the red color light pass and a solid state image sensing device, in which from the solid state image sensing device there are obtained a red primary color signal in response to a red primary color information passed through the first filter element, a green prima...

This relates to an apparatus and method for providing an accurate data group to the instruction buffer of a data processing system. The data group is simultaneously applied to the instruction buffer and to the error correcting apparatus. After analysis of the data group in the error correcting apparatus, the operation in progress is aborted if an error has been detected, and the error is not correctable. If correctable, the correct instruction data group is applied to the execution unit. If no e...

A circuit for indicating the charge state of a battery supplying discharge current to its load circuit under actual load operation during which battery discharge current is subject to magnitude variations and interruptions, having means for storing a stored signal whose value is representative of battery state-of-charge, means for rapidly increasing the value of the stored signal to the scaled value of the battery terminal voltage when its scaled value is below that of the battery terminal volta...

A cabin pressure control system uses two identical controllers which serve, on alternate flights, as primary controller while the other serves as standby. Identical circuitry on the units cooperate if both controllers attempt to control cabin pressure together, or if neither assumes control, to place one of the units in control of cabin pressure.

The primary winding of a saturable transformer, coupled to an a.c. circuit, drives the core of the transformer into saturation during at least a portion of the cycle of an a.c. current flowing through the circuit. A plurality of rise-time indicator pulses, having a duration inversely proportional to the rate of rise of the a.c. current being monitored, is induced in the secondary winding of the saturable transformer. The rise-time indicator pulses appearing in the secondary winding of the satura...

Method and apparatus for selectively sensing the presence of a given constituent within an atmosphere. The apparatus includes a solid state element containing alkali metal ions that react with ions of the given constituent when the two are brought together. The solid state element is housed within a shield that functions as an ion control screen when heated to a predetermined temperature in the presence of a gas or vapor of the given constituent to selectively pass ions of the given constituent ...