Patent ID: 6154354
Filing Date: 2000-11-28
Classification: H01F

Abstract:
A device for energizing a latching solenoid from a great distance using DC (direct current) comprising a controller capable of providing a DC voltage for a timed interval, and capable of reversing the polarity of said DC voltage two lines for bringing said DC voltage over a great distance from said controller to a circuit, said circuit comprising an activatable switching means connected to said input lines for controlling a set of alternative contacts, said contacts being capable of closing in order to complete a first sub-circuit in parallel with said switching means or opening to complete a second sub-circuit including said solenoid, said first sub-circuit including a resistance means between one of said input lines and said contacts and a non-polarity sensitive DC charge storage means between said other input line and said contacts, said solenoid being connected to a line between said other input line and said contacts.