Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1974-10-29
1977-02-01
Corbin, John K.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
307235P, 315185R, 340172, G01R 1302, G01R 3100, H03K 520
Patent
active
040064123
ABSTRACT:
A digital display system is provided for visually indicating the amplitude of a received signal. A plurality of reference signals incrementally graduated from a low amplitude to a high amplitude is applied as first inputs to a polarity of comparators and the received signal as applied as the second input. The comparators produce an output of polarity commensurate with the instantaneous difference between its inputs and a plurality of series-connected light emitting means, each connected between the outputs of two adjacent comparators, is responsive to a predetermined electrical potential for generating light energy so that the instantaneous amplitude level of the received signal is visually indicated by the actuation of a single such light emitting means at a time.
REFERENCES:
patent: 2927207 (1960-03-01), Fiehrer et al.
patent: 3816822 (1974-06-01), Auchapt
patent: 3894288 (1975-07-01), Musser, Jr.
patent: 3927571 (1975-12-01), Athey
Widlar, R. J. "Core Memory Sense Amplifier Designs Using an Integrated Dual omparator", Fairchild Semiconductor Application Bull., 2-1966, APP 123.
Nirschl, J. C. "Window Comparator Indicates System Status" Electronic Design News/EEE, 6-15-71, pp. 49-50.
Graeme et al. "Operational Amplifiers", McGraw-Hill 1971, pp. 366-368.
Campbell Kenneth J.
Mogle Douglas H.
Corbin John K.
McLaren J. W.
Punter Wm. H.
Rubens G. J.
Sciascia R. S.
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