A trace locator for identifying in a visual display the position on a recording medium of a recorded trace representing an input signal in a multi-trace recorder. The trace position may be displayed without a movement of the recording medium to enable the possible trace to be located and positioned by observing the visual display. The visual display is sequentially advanced by successive clock signals until a predetermined amplitude of an input signal to be displayed is reached. The trace locati...

A method of preparing a trace element solution includes the steps of providing at least one EDTA-complex, providing a sodium selenite solution, and combining the EDTA-complex(es) and the sodium selenite solution to form a trace element solution. An EDTA complex is prepared by using disodium EDTA or EDTA acid, selenium, and any other suitable mineral.

The invention discloses a trace element solution, which comprises at least one metal selected from the group comprising selenium, copper, zinc, manganese and chromium and which comprises a concentration of the metal(s) of at least 60 mg/ml. The solution further comprises at least one compound selected from the group comprising iodine, potassium iodide, sodium iodide, iron, iron chloride, zinc oxide, manganese sulphate, sodium selenite, copper carbonate, sodium carbonate, anhydrous disodium EDTA ...

A power providing device that has a battery, a protective housing a terminal cap, and a fuse on a substrate.

A trace circuit includes the event control circuit and two trace buffer memories. The event control circuit receives data on a control bus, an address bus, and data a bus and stores the data cyclically and alternately in the two buffer memories. Also, the event control circuit makes the two buffer memories output the stored data cyclically and alternately.

In a multiple trace recording system of the type which might use a CRT as the writing instrumentality, means are provided for positively identifying each trace on the record. The identifying means includes means for printing, along one margin of the record member, ordinal numbers representative of the several input signal channels. The identifying means further includes means for generating a transverse trace line extending from a point adjacent to each of the imprinted numbers to a point of jun...

Trace concentrations of oil are measured by mixing the sample with an emulsifier to distribute the oil uniformly throughout the sample, transferring a measured portion of the emulsified sample to a reservoir of a bottle having a capillary neck, equilibrating the temperature of the sample portion to over 135.degree. F, adding a demulsifier to the bottle, while keeping the liquid level therein below the neck, whirling the bottle in a heated centrifuge to separate out the oil, adding liquid to the ...

A signal display circuit includes an analog to digital converter, a recirculating memory, a digital to analog converter, and a CRT display means. The memory and the display means are synchronized so that a bright spot representative of the information contained in one location of the memory is produced on the display means for each shifting of information in the memory. New information replaces existing information in the memory at a rate less than the shifting rate of the memory so that the dis...

A recording medium dispensing device which may be used as a three-dimensional glyph producing stylus or a two-dimensional record producing stylus or pen (either nib type or stylographic type) having one or more pressurized recording medium containers and control means for individually controlling the dispensing of recording medium from the containers, and having separately controllable withdrawing means for withdrawing previously dispensed recording medium from the recording volume or surface.

The beam of a cathode-ray tube, normally suppressed, is electromagnetically deflected by a triangular current in the x direction and by a sinusoidal current in the y direction, thereby producing an invisible grid on the oscilloscope screen. Whenever the y-deflection signal matches either an input signal to be visualized or a selected reference signal, the beam is turned on for a small fraction of a y-sweep cycle to produce part of a luminous trace, representing the input signal, and a straight b...