Apparatus including battery check circuit

Details Apparatus including battery check circuit Apparatus including battery check circuit

1978-08-30

1981-02-17

Hix, L. T.

Communications: electrical

Land vehicle alarms or indicators

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

340636, G03B 726, G01N 2746

Patent

active

042511518

ABSTRACT:
An apparatus for checking the voltage applied to one or more electrical circuits provided on a substrate comprises a pair of power supply terminals respectively connected to each of the electrical circuits, a means for applying a voltage between the power supply terminals, a manually operable power switch means provided between the voltage applying means and one of the power supply terminals and a battery check device. The battery check device includes a battery check circuit provided on the substrate and connected between the power supply terminals. The battery check circuit is adapted to detect the voltage applied between the power supply terminals and to provide a detection signal indicating the result of the detection. The battery check device further includes a display means connected to the battery check circuit and adapted to indicate the detected voltage level in response to the detection signal. The apparatus comprises further a battery check switch means connected to the battery check device and adapted to actuate the device upon the closure of the switch means and a link means provided in such a manner as to close the power switch means in response to the closure of the battery switch means and irrespective of aforementioned manual operation.

REFERENCES:
patent: 3486428 (1969-12-01), Fukushima
patent: 3947855 (1976-03-01), Inoue et al.

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