H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 71/10 (2006.01) H01H 57/00 (2006.01) H02H 3/33 (2006.01) H01H 83/14 (2006.01) H01L 41/04 (2006.01)
Patent
CA 2292856
An electronic driving circuit for a bistable actuator activated by piezoelectric elements, particularly for residual-current devices, the circuit comprising voltage step- up means which are suitable to step up and store a voltage generated across a secondary winding of a current sensor, the step-up means being connected to threshold setting means which are suitable to determine an intervention threshold of a bistable actuator activated by piezoelectric elements, whose activation is determined by an excitation voltage applied across it which is higher than the voltage threshold set by the threshold setting means.
Brandonisio Salvatore
Colombo Franco
Colonna Donato
Manara Angelo
Turati Walter
Abb Ricerca Spa
Abb Service S.r.l.
Marks & Clerk
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