| 摘要 |
<p>The device comprises a head 10 with an electromagnetic portion 11 consisting of a magnetic core and one or more windings A1-A5, at least one of which is normally disabled, being associated with an intelligent part 12 able to enable one or more windings of the electromagnetic part 11 on command from a control logic, interfacing with said intelligent part 12. The enabling occurs by sending, from the control logic, a corresponding activation code (pin code). At least one of the windings A1-A5 is intercepted by a normally open switch I5, subject to closing by a microprocessorμP, residing in the intelligent part 12 of the head and interfacing with said control logic. <IMAGE></p> |
