Analogue voltage indicator with sequence of light emitting diodes
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United States of America Patent
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-
Jan 6, 1981
Grant Date -
N/A
app pub date -
May 4, 1978
filing date -
May 4, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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