Circuit for an electronic clock having a parallel-connected alar

Details Circuit for an electronic clock having a parallel-connected alar Circuit for an electronic clock having a parallel-connected alar

1980-10-02

1982-12-07

Roskoski, Bernard

Horology: time measuring systems or devices

Signalling means

Time condition responsive

368 73, 368250, G04C 2116

Patent

active

043623999

ABSTRACT:
In an electronic clock circuit having both a stepper motor and a PXE (piezoelectric oxide) alarm element, the stepper motor and PXE element are connected in parallel and appropriate motor and PXE drive signals are provided on the same line. With this circuit configuration, an inductance and a transistor are eliminated from the prior art circuit, thus resulting in a smaller and less expensive device.

REFERENCES:
patent: 2752592 (1956-06-01), Gallagher et al.
patent: 3004179 (1961-10-01), Chartier et al.
patent: 3158986 (1964-12-01), Haydon
patent: 3318084 (1967-05-01), Patrick
patent: 3341841 (1967-09-01), Stampfli

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