A semiconductor memory device of the present invention includes bit lines and common data lines for data writing or readout into or from plural memory cells. On these bit lines and common data lines, equalizing or precharging circuits are provided and operate during address transition. During transition from writing to readout, such transition is detected to actuate the equalizing or precharging circuits more promptly than usual to shorten the write recovery time to realize a high speed operatio...

Electrostatic coating guns are described wherein a conduit for coating material extends from a handle part, and a high-tension electrostatic generator, constructed as a block or unit, may be replaceably mounted on the handle part. The high-tension generator consists of an electrostatic cascade device wholly embedded in an insulating moulded composition and arranged to apply full high tension to the muzzle end of the gun, this high tension decreasing towards the handle part. The conduit may be a ...

A charging device for use in an image forming apparatus is disclosed which charges an object to be charged by contacting a conductive charging member with the surface of the object and then applying a voltage across the charging member and the object, wherein at least a contact portion of the charging member comprises a conductive material having a hygroscopic degree of 0.2% or less.

A generator is provided inside equipment, such as a sprayer, having a high voltage cascade including a voltage-gain transformer and a voltage multiplier arranged at the output of the transformer. The transformer is a double or multiple transformer, including at least two elementary transformers, whereof respective primary windings are mounted electrically in parallel, and whereof respective secondary windings are mounted electrically in series, the arrangement reducing a diameter of the cascade ...

Optical sensing devices comprising dual chamber apparatii which use signal and reference light beams together with interferometric methods for detection of physical quantities of interest. The signal part of the chamber experiences the effects of a particular physical quantity to be measured which produces variations in the optical length of the light beam by movement of a mirror, thereby modulating that beam in proportion thereto. Concurrently, the reference beam, of equal pathlength, is passed...

To measure temperature in an electromagnetic field a thermocouple is connected to a meter. The temperature to be measured is sensed and converted into a D.C. voltage by the thermocouple. This D.C. voltage causes the meter to indicate the temperature. To prevent error due to electromagnetically coupled energy heating the thermocouple and/or producing a high frequency current which is conducted to the meter circuit from interfering with the meter readings, a physically small thermocouple with semi...

A spray-coating device for spraying liquid or powdered coating material on articles includes a transformer for stepping up an alternating voltage and a voltage multiplier circuit for converting the output of the transformer to a high DC output for driving a charging electrode in the spray-coating device. The alternating voltage for the transformer is obtained from a controllable source of alternating voltage which produces a sinusoidal voltage whose frequency is constantly adjusted such that the...

A nonaqueous vehicle for oral pharmaceutical suspensions is described which has a satisfactory taste, low toxicity, good flow properties and is highly resistant to settling and caking of the suspended material. Such a vehicle is comprised principally of refined fractionated coconut oil, hydrogenated castor oil, lecithin, aluminum stearate and an oil isoluble excipient such as sucrose. This nonaqueous vehicle is useful for preparing ready-to-use oral pharmaceutical suspension of water degradable ...

A moulding tool for a machine for moulding plastic material, especially molten glass, comprises at least one mould middle section divided into a plurality of middle section parts, and operating means having members each carrying with clearance a respective one of the mould middle section parts for opening and closing movements transversely of the longitudinal axis of the mould and transversely guiding the parts in two axially spaced guide planes by means of guide elements.

A self adjusting power supply for induction charging electrodes used in electrostatic spray coating apparatus is disclosed. A first resistance of high ohmic value is connected in series between a source of high direct current voltage and the induction charging electrode, while a second resistance is connected between the source of voltage and a ground reference point. The first resistance acts as a voltage divider with the spacial impedance which exists between the charging electrodes and ground...