Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Transient or portion of cyclic
Patent
1979-10-24
1981-04-21
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Transient or portion of cyclic
307351, 324103P, 328151, G01R 1900, G01R 1916, H03K 520
Patent
active
042635489
ABSTRACT:
Apparatus for measuring the amplitude of an adjustable width current or voltage impulse at a known time interval following the initiation of the impulse. During a first pulse duration, a counter is advanced with clock signals having a frequency f.sub.1. The total number of clock signals accumulated during the interval is then transferred into a downcounter which is arranged to be decremented during a second identical interval by a clock signal having a frequency n (f.sub.1). When the downcounter reaches zero, a strobe pulse is produced for enabling the analog measuring circuits which sample the amplitude of the current or voltage impulse being monitored. By selecting the value n, the sampling point can be shifted in time along the width of the pulse being measured. For example, for n=2, the amplitude of the voltage or current pulse being measured will be that occurring at the midpoint of the pulse.
REFERENCES:
patent: 2591738 (1952-04-01), Spencer
patent: 2624770 (1953-01-01), Yetter
patent: 4165508 (1979-08-01), Barter
Bartelt James T.
Carlson Scott W.
Cardiac Pacemakers Inc.
Haugen Orrin M.
Karlsen Ernest F.
Nikolai Thomas J.
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