Analogue voltage indicator with sequence of light emitting diode

Details Analogue voltage indicator with sequence of light emitting diode Analogue voltage indicator with sequence of light emitting diode

1978-05-04

1981-01-06

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

324 96, 324122, 340782, 340811, G06F 314

Patent

active

042439850

ABSTRACT:
A circuit serves to illuminate appropriate light emitting diodes of a sequence to provide a bar graph type display of an analogue input voltage. The light emitting diodes are divided into sets with each set being associated with a respective signal processing element which may be a differential amplifier supplied with the analogue input voltage at one input terminal and a unique off-set voltage at the other. The signal processing elements handle respective contiguous ranges of the analogue voltage and the required supply voltage is reduced.

REFERENCES:
patent: 3796951 (1974-03-01), Joseph
patent: 3969672 (1976-07-01), Wallander et al.
patent: 3987392 (1976-10-01), Kugelmann et al.
patent: 4039956 (1977-08-01), Shimanek et al.
patent: 4050308 (1977-09-01), Lee

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