An essentially full range resistance type relative humidity sensing element is produced by providing a dielectric blank, on which an electrode system has been applied, with a metal oxide coating, in a manner which produces a porous structure therein, and subsequently impregnating that coating with a humectant material. The metal oxide used is selected from a group, including oxides of the metals found in Group VIII, Period 4 of the Periodic Table, which exhibit electrical insulating properties, ...

A Photoelectric Relative Motion Detector in which a light source and a photoelectric device are mounted on a plate adjacent one side of an object having portions varying in light reflectivity spaced along a path of relative motion between the detector and the object. The plate shields portions of the object along the path from ambient light and shields electrical leads connecting the device to external circuits from extraneous electrical signals.

Apparatus for measuring and controlling the relative humidity of exhaust air from an industrial drier in which exhaust air is passed across a dry bulb and a wet bulb thermocouple from which a voltage is derived providing a measure of the relative humidity in the air in the sample. This voltage is used to control the amount of exhaust air from the drier to atmosphere. The wet bulb thermocouple is cyclically dipped in a bowl of water under the control of a timer system of the voltage to control th...

An essentially full range resistance type relative humidity sensing element is produced by providing a dielectric blank, on which an electrode system has been applied, with a metal oxide coating, in a manner which imparts a porous structure thereto, and subsequently chemically bonding chlorine covalently into the oxide to produce an oxychloride structure. The metal oxide used is selected from a group, including those of Group VIII, Period 4 of the Periodic Table, which exhibit electrical insulat...

A relative positioning machine has a first panel for supporting a spindle thereon, a second panel for supporting a workpiece, first through fourth support mechanisms by which the first and second panels are tiltably supported for angular movement about an X1 axis, an X2 axis, a Y1 axis, and a Y2 axis, and first through fourth actuator mechanisms for individually tilting the first and second panels about the X1 axis, the X2 axis, the Y1 axis, and the Y2 axis. The spindle 11 and hence a machining ...

A binary relative delay line device having two delay lines, each of which delays, during a time interval, an input signal by a substantially equal amount of time. Each delay line requires a settling time before it is selected during a next time interval. A selection and delay determining circuit is coupled to the two delay lines to select one of them to provide an output signal. A clock is coupled to the selection and delay determining circuit to operate the selection and delay determining circu...

An apparatus for visualizing relative motion between two moving objects in two-dimensional plane is provided. A planar base has a first compass rose printed thereon. Rotatably attached to the center of the first compass rose is a means for indicating a present course of a first moving object relative to a true bearing indication on the first compass rose. A second moving object assembly consists of a second compass rose rotatably attached to a means for indicating a present course of the second ...

An imaging system including a scanning linear detector array is calibrated with the aid of a source of radiation to provide uniformity in gain among the various detectors of the array. A first memory is provided for storing a map of the source obtained by a scanning through a succession of parallel line scans by means of a single one of the detectors, the detector array being offset between the successive line scans to enable the single detector to perform all of the line scans. A second memory ...

A circuit for performing window-relative dithering of intensity data comprises a programmable dither cell; circuitry for comparing dither values stored in the dither cell with selected parts of the intensity values and outputting an increment signal in accordance with the results of the comparison; a wrap prevention circuit for preventing the intensity from being incremented if incrementing would cause the intensity to wrap to a low value; and an adder for incrementing the intensity in response ...

A relative displacement control apparatus provides both coarse and extremely fine precise control over displacements between a sample and a detecting probe as required, e.g. in operations of optical instruments, analyzing instruments and scanning tunneling microscopes. This precise fine displacement is produced through a double-lever-action which is created substantially by means of an arm assembly preferably with a piezoelectric drive for precise displacement control, a support pivotally holdin...