A computer, for use with a machine tool, can make any of a number of calculations involving ratios between two operands to determine the angular velocity of the spindle of the machine, the velocity and position of a movable member such as a carriage, and the ratio between two velocities. Any of such calculations is selected by means of a selector switch and a second selector switch is settable to select a time base for the calculation. The operands are represented by pulses produced by transduce...

A ratio controller having circuitry for establishing a zero ratio. A master signal provided by a master controller is applied to the upper end of a bridge circuit consisting of two parallel branches. The first branch includes a series-connected potentiometer winding. The second branch includes two series-connected resistors. The ratio of impedances in the second branch can be made equal to the ratio of impedances in the first branch taken between the nominal zero setting of the potentiometer and...

A circuit for indicating the ratio of an unknown part value to a known part value, or the percentage error between an unknown part value and a known part value, or the direct value of an electrical part to be measured, has a first operational amplifier for developing a voltage proportional to the ratio of an unknown part value to a known part value and a second operational amplifier for subtracting a predetermined amount from said ratio voltage so that the resultant output from said second ampli...

The purpose of this invention is to ensure an active use of the inverse short-channel effect in the ratio circuit and to guarantee stable operation at low power source voltage. In this ratio circuit, N-channel MOS transistor 12 of CMOS circuit 10 on one side forms the drive element, while P-channel MOS transistor 18 of CMOS circuit 16 on the other side forms the load element. Said N-channel MOS transistor 12 on the drive side and P-channel MOS transistor 16 on the load side have their drain term...

A method of testing an integrated circuit. The thermal energy of the integrated circuit to adjusted to a first temperature, and a first set of electrical characteristics of the integrated circuit are sensed at the first temperature. The first set of electrical characteristics are recorded in association with an identifier for the integrated circuit. The thermal energy of the integrated circuit is adjusted to a second temperature, and a second set of electrical characteristics of the integrated c...

An electro-optical device for generating data signals representing relative displacement between an aperture pattern in a reference plane and a reflective pattern in a measurement plane comprises a reference detector for sensing reference radiation directed towards the aperture pattern and a convolution detector for sensing the reference radiation reflected by the reflective pattern. The phase of a signal generated by the convolution detector is compared to the phase of a signal generated by the...

For adjustment of a desired burner gas-air ratio over the broadest possible load range without additional pressure tapping of the burner, combustion chamber, or air lines, a ratio controller is provided that permits adjustment of the gas flow as a function of counterpressure. For adjustment, the ratio controller has at least one position-variable measurement site, or at least two measurement sites, connected directly or indirectly via a pilot valve, to an actuating diaphragm via a valve block or...

A ratio analyzer employing two time-base generators which are used to convert time intervals to analog voltages. The outputs of the two time-base generators are sampled and the amplitude of one pulse is divided into the amplitude of the second pulse which gives an output voltage representation of the ratio of the two original pulse widths. The output voltage representation is indicative of the type of input signal present and thus may be used to analyze the input signal.

A ratio discriminator is disclosed which can provide an exact indication of the achievement of tuning and is unaffected by drifts and variations in the components or supply or reference voltages. The discriminator includes a modulated signal input, an intermediate frequency circuit comprising first and second inductively coupled tuned oscillating circuits, wherein the first circuit is connected to the input and the second oscillating circuit has a secondary winding equipped with an intermediate ...

This instrument has a generally cylindrical casing member with an inner stop wedge for stopping rotation of an inner vane in either direction. A novel feature is an arcuate gas or other fluid discharge port in the bottom surface over which the rotatably mounted vane can travel in close proximity thereto. A suitable fluid inlet port is provided in the bottom surface on either side of the stop wedge and adjacent the wedge. The bottom surface may be part of a plate or disc screwed or otherwise fast...