Boots – shoes – and leggings
Patent
1992-09-22
1994-09-13
Teska, Kevin J.
Boots, shoes, and leggings
324520, 364481, 364492, 341131, G01R 3111, G06F 1556
Patent
active
053474643
ABSTRACT:
An instrument employs a high-pass filter and an associated amplifier to reduce the number of Analog-to-Digital-Converter bits required to determine the amplitude of harmonics contained in digitally sampled AC (alternating current) power system voltage or current waveforms. The instrument is coupled to a power system having a line conductor and a neutral conductor for obtaining time-domain representations of the current flowing in the line conductor and the voltage difference between the line conductor and the neutral conductor. The time-domain representations are converted to frequency-domain representations by a single-chip microprocessor.
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Hord Bryan D.
McEachern Alexander
Basic Measuring Instruments
Teska Kevin J.
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