METHOD OF GENERATING THE CURRENT IMPULSES NECESSARY FOR THE OPERATION OF RADIATION-EMITTING SEMICONDUCTOR DIODES, AND DEVICE FOR CARRYING OUT THE METHOD

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...

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Bibliographische Detailangaben
Hauptverfasser: STIEFELMEYER, GUNTHER, GRAD, LANGBEIN, KONRAD, GRAD
Format: Patent
Sprache:eng ; ger
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Beschreibung
Zusammenfassung: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.