Signal level display apparatus

Details Signal level display apparatus Signal level display apparatus

1980-06-19

1982-09-07

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

315168, 340782, 340793, 455159, G09G 332

Patent

active

043486665

ABSTRACT:
A signal level display apparatus arranged so that an ac signal is superposed upon either an input signal or a reference voltage of a comparator to display the input signal with differences in degrees of brightness of illumination of light-emitting elements constituting a display unit when viewed externally, to thereby distinguish the level of the input signal which is closer to the level of the reference voltage from the level departing away therefrom. This apparatus also displays simultaneously on said display unit the level of two different input signals in distinguished degrees of illumination of the light-emitting elements.

REFERENCES:
patent: 3969672 (1976-07-01), Wallander et al.
patent: 4039956 (1977-08-01), Shimanek et al.
patent: 4163971 (1979-08-01), Morin et al.

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