Title: Coulometric device for performing time integration

Abstract: A coulometric device for performing integration or timing functions with precise end-state detection comprises a coulometer; serially connected to the coulometer, a source of pulsed d.c. current representative of one or more quantities to be integrated; and a pulse height discriminator for detecting a reduction in the voltage drop across the coulometer. One variable to be integrated can vary either the duty cycle of the pulsed d.c. current source or the peak current, and the product of two variables can be time-integrated by using one variable to vary the duty cycle and the other to vary the peak current.

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Inventors: Finger, Eugene P. (Brewster, NY, US)

Application Number: 885279
Filing Date: 1978-03-10
Publication_date: 1980-03-04
Assignee: Curtis Instruments, Inc. (Mount Kisco, NY)
Primary Class(es): 708/823 324/94, 324/142
Other Classes:
US Patent Ref:

Re27556	Jan, 1973	Corrsin	324/182.
3387288	Jun, 1968	Bisset et al.	324/182.
3462684	Aug, 1969	Beusman	324/182.
3518501	Jun, 1970	Bisset et al.	324/142.
3577168	May, 1971	Tuten	324/182.
3603880	Sep, 1971	Brecker et al.	324/182.
3680063	Jul, 1972	Pinto	365/153.
3704431	Nov, 1972	Finger	324/94.
3725774	Apr, 1973	Stewar, Jr.	324/142.
3875505	Apr, 1975	Goldberg	324/182.
3938128	Feb, 1976	Pidsosny et al.	324/182.
3972022	Jul, 1976	Goto et al.	324/182.

Other Refs:
Primary Examiner: Gruber, Felix D.
Assistant Examiner:
Attorney: Pennie & Edmonds