Abstract:
Electric metering device including at least two coulometric cells which experience a sharp voltage rise upon deplating. The current is metered by passing current through one cell until it is deplated, whereupon the sharp voltage rise causes a second cell to become conducting. In a typical application, the cells would then be replaced and recharged for reuse.
Abstract:
Precision test equipment requires periodic maintenance and calibration to insure accurate and reliable operation. For the most efficient use of such test equipment, it is serviced on the basis of time in operation and not on a calendar interval. To monitor the time in usage of test equipment and signal the expiration of an operating time interval, a computer is connected to the equipment and operated only when the test equipment itself is operational. This time interval computer utilizes as a timing element an electrochemical storage cell which has a pair of electrodes and contains active material for transfer between the pair of electrodes. The electrochemical storage cells control a four stage transistor switch that includes an output stage transistor controlling a warning light circuit. At the end of a selected time interval, as determined by a resistor in series with the storage cell, an oscillator takes over control of the output stage transistor to provide a flashing operation of the warning light.
Abstract:
An electrolytic cell using a solid electrolyte such as polycrystalline silver bromide or silver sulfide bromide. Also included within the present invention is a method of preparation of the electrolytic cell wherein a first electrode is formed from a powdered active metal such as powdered silver and wherein the powdered silver is lightly compacted to a desired shape. The solid electrolyte is also formed from a powdered substance such as silver bromide or silver sulfide bromide and wherein the solid electrolyte is lightly compacted against the first electrode. A second electrode is formed from a powdered inert metal such as powdered gold and wherein the second electrode is lightly compacted against the solid electrolyte. The entire structure including the two electrodes sandwiching the solid electrolyte is then pressed together at a very high pressure to form the solid electrolyte electrolytic cell.
Abstract:
(1. AN OPERATING TIME INDICATOR COMPRISING A BODY OF NON-CONDUCTIVE MATERIAL HAVING A BORE OF SUBSTANTIALLY UNIFORM CROSS-SECTION THROUGH THE BODY, SAID BORE HAVING THEREIN TWO COLUMNS OF LIQUID METAL, EACH OF WHICH EXTENDS FRON AN END OF THE BORE TOWARD THE OTHER COLUMN SUCH THAT A SPACE NOT OCCUPIED BY COLUMN METAL EXIST BETWEEN THE ADJACENT ENDS OF SAID COLUMNS, A LIQUID ELECTROLYTE IN SAID BORE AND IN CONTACT WITH THE INMOST ENDS OF THE COLUMNS AND FILLING SAID SPACE BETWEEN THE ADJACENT ENDS OF SAID COLUMNS, SAID ELECTROLYTE COMPRISING PRINCIPALLY A SOLUTION OF AT LEAST ONE SOLUBLE SALT OF SAID METAL, AND CONDUCTIVE MEANS FOR CONNECTING SAID COLUMNS TO AN EXTERNAL SOURCE OF POTENTIAL, WHEREBY, UPON UMPRESSING A POTENTIAL BETWEEN SAID COLUMNS, METAL IS REMOVE FROM ONE OF SAID COLUMNS AND TRANSPORTED THROUGH SAID ELECTROLYTE AND DEPOSITED ON THE OTHER OF SAID COLUMNS, THE CHANGE OF LENGTH OF SAID COLUMNS BEING DIRECTLY INDICATIVE OF THE QUANTITY OF ELECTRIC CHARGE FLOWING THROUGH SAID INDICATOR.)
Abstract:
AN ELECTROCHEMICAL INTEGRATOR INCLUDING A WORK AREA DIVIDED INTO WORK COMPARTMENTS BY AN ION EXCHANGE MEMBRANE MEANS, ELECTRODE MEANS COOPERATIVELY ASSOCIATED WITH THE WORK COMPARTMENTS, AN IONIZABLE MATERIAL SUCH AS A GAS, REAGENT OR PRODUCT, WHICH IONIZES DUE TO THE PASSAGE OF CURRENT THROUGH THE ELECTRODE MEANS IN THE WORK COMPARTMENTS, AND A MEASURING MEANS WHICH DISPLAYS THE QUANTITY OF GAS, REAGENT OR PRODUCT TRANSFERRED THROUGH THE ION EXHANGE MEMBRANE MEANS. THE QUANTITY OF IONIZABLE MATERIAL TRANSFERED BETWEEN THE WORK COMPARTMENTS IS PROPORTIONAL TO THE ELECTRICAL CHARGE PASSED THROUGH THE ELECTRODE MEANS.
Abstract:
A generator utilizing a capacitive coulometer for generating a signal that is inversely proportional to the integral of a selected function. A current source and a variable amplitude interrogation oscillator are connected to the input terminals of a coulometer which modulates the output of the oscillator in accordance with the integral of the current from the current source. The modulated signal is amplified in an AC amplifier and demodulated by a standard envelope detector. The demodulated signal is compared with a reference signal in a differential amplifier which generates an error output signal when the demodulated signal is not equal to the reference signal. The error signal is fed back in a negative feedback path to adjust the amplitude of the variable amplitude interrogation oscillator.
Abstract:
A variable frequency generator utilizing a coulometer for generating a signal having an amplitude that varies in accordance with the integral of a selected function. A DC current source and a variable frequency interrogation oscillator are connected to the input terminals of a coulometer which modulates the output of the oscillator in accordance with the integral of the current from the current source. The output of the coulometer is amplified by an AC amplifier and is then demodulated by a standard envelope detector. The demodulated signal is fed back to the oscillator to proportionally control the frequency of the oscillator, that is, as the amplitude of the modulated signal increases, the frequency of the oscillator increases and, as the amplitude of the demodulated signal decreases, the frequency of the oscillator decreases.
Abstract:
An electromechanical recording device having plural electrodes and a moving electrolytic bubble in a capillary tube that stops acting before reaching an irreversible condition and a comparing recording circuit using it.
Abstract:
An electrochemical timer has a metal cathode electrode in the form of a container housing an electrolyte, an anode electrode and an elongated nonconducting anode support means having extremities larger than the region between the extremities. The intermediate region of the support means carries the anode of the device and the extremities of the support means serve to space the anode from the cathode.