Overvoltage-pulse analyzer

Details Overvoltage-pulse analyzer Overvoltage-pulse analyzer

1980-08-01

1982-12-21

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Transient or portion of cyclic

324 77A, 324103P, G01R 2900, G01R 1916

Patent

active

043651933

ABSTRACT:
A system for measuring and storing the amplitudes plus duration and/or rise times of overvoltage pulses occurring on a transmission line comprises a voltage divider working into a first and a second comparator respectively detecting an abnormal voltage exceeding a predetermined sensitivity threshold and discriminating among different amplitude levels above that threshold. The first comparator triggers an oscillator driving a pulse counter which measures the duration of an overvoltage pulse and also provides quantized information on rise time to the highest amplitude threshold surpassed by that pulse as determined by the second comparator. This information is stored in a memory with two groups of cells respectively assigned to combinations of amplitude with duration and combinations of amplitude with rise time, the occurrence of any such combination incrementing the contents of the respective cell. These cells are cyclically scannable and their contents can be selectively displayed on a visualizer such as an oscilloscope.

REFERENCES:
patent: 2752589 (1956-06-01), De Long, Jr.
patent: 2884085 (1959-04-01), Von Wittern et al.

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