Electric lamp and discharge devices: systems – Pulsating or a.c. supply
Patent
1984-02-02
1986-06-17
Moore, David K.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
315209PZ, 315276, 315 70, 310355, 310318, 310319, H05B 3702
Patent
active
045958645
ABSTRACT:
A light-emitting diode is energized by converting a mechanical energy by means of a piezoelectric element into electrical charges which are transformed in a transformer into current pulses sufficient for activating the light-emitting diode. The component parts of a device of this invention include a rotation-symmetrical housing enclosing a striking member which is spring-biased against an opening in the housing, a piezoelectric element cooperating with the striking member and having two opposite electrodes connected to a primary winding of a pulse transformer. The secondary winding of the transformer is connected to the leads of the light-emitting diode. The piezoelectric element is pressed against the compression spring of the striking member by a connection spring leading to a terminal of the primary winding. All component parts are aligned along the center axis of the housing.
REFERENCES:
patent: 3582692 (1971-06-01), Palini
patent: 3938262 (1976-02-01), Dye et al.
patent: 4048489 (1977-09-01), Giannetti
patent: 4078187 (1978-03-01), Kanisawa et al.
Langbein Konrad
Stiefelmeyer Gunther
DeLuca Vincent
Leuze Electronic GmbH & Co.
Moore David K.
Striker Michael J.
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