Abstract:
Spannungsgenerator (1) zur Umwandlung von nicht-elektrischer Prümärenergie (PE) in ein Spannungssignal (USIG, USIG') mittels Induktion, dadurch gekennzeichnet, dass er mindestens aufweist einen mechanischen Energiespeicher (2) zur Aufnahme der Primärenergie (PE), der mindestens einen Umschlagpunkt (P) aufweist, mindestens ein Induktionssystem (3), das mit dem mechanischen Energiespeicher (2) koppelbar ist, wobei der mechnische Energiespeicher (2) bei Erreichen des mindestens einen Umschlagpunktes (P) eine Bewegung ausführt, mittels der im Induktionssystem (3) ein Spannungssignal (USIG, USIG') induzierbar ist.
Abstract:
A self-powered switching device using a prestressed flextensional electroactive member generates a signal for activation of a latching relay. The electroactive member has a piezoelectric element with a convex and a concave face that may be compressed to generate an electrical pulse. The flextensional electroactive member and associated signal generation circuitry can be hardwired directly to the latching relay of may be coupled to a transmitter for sending an RF signal to a receiver which actuates the latching relay.
Abstract:
The invention concerns an apparatus (1) comprising at least an element (3), such as a key, for controlling a function, a multiplying-gear including a motion input wheel (12) and a motion output wheel (13), and means for storing and restoring electric power. The invention is characterised in that: said motion input wheel (12) comprises means (28, 29, 35, 36, 41, 45) to be urged in engagement with each said element (3) when said element (3) starts its displacement such that said displacement drives in rotation said input wheel (12), those same means (28, 29, 35, 36, 41, 45) enabling said input wheel to be disengaged from each said element (3), at the end of said element (3) displacement, such that said end of displacement does not stop the wheel (12) rotation; said motion output wheel (13) comprises a permanent magnet which, over its periphery, forms an alternation of North and South magnetic poles; the device comprises at least a coil (42) placed in the proximity of the motion output wheel (13).