Patent ID: 7483254

Claim:
A control circuit of a bistable permanent magnet operating mechanism, including a permanent magnet operating mechanism and a pulse signal control circuit connected to a pulse coil of the permanent magnet operating mechanism, the permanent magnet operating mechanism having a housing ( 1 ), with an output shaft ( 2 ) positioned therein, the output shaft ( 2 ) extending out through an end cover ( 15 ) on an end of the housing ( 1 ), with an front end connecting to a performing mechanism, the output shaft ( 2 ) having a core ( 3 ) secured thereto, the core ( 3 ) having a permanent magnet ( 4 ) arranged outside of the core ( 3 ), the permanent magnet ( 4 ) and the housing ( 1 ) being securely connected, with a first pulse coil (L 1 ) and a second pulse coil (L 2 ) respectively positioned on an end of the permanent magnet ( 4 ), characterized in: the pulse signal control circuit comprising a switch-off energy storage circuit (FZ), a switch-on energy storage circuit (HZ), a switch-off contact switch, and a switch-on contact switch, the switch-off contact switch and the switch-on contact switch being triple synchro contact switches, wherein two terminals of a first set switch-off contacts (FZJ 1 ) of the switch-off contact switch being connected to a negative terminal of the switch-off energy storage circuit (FZ) and an upper end of the first pulse coil (L 1 ) respectively, and, the upper end of the first pulse coil (L 1 ) being connected to an upper end of the second pulse coil (L 2 ) through a second unilateral diode (D 2 ); wherein two terminals of a third set switch-off contacts (FZJ 3 ) of the switch-off contact switch being connected to a positive terminal of the switch-off energy storage circuit (FZ) and an lower end of the second pulse coil (L 2 ) respectively, and, the lower end of the second pulse coil (L 2 ) being connected to an lower end of the first pulse coil (L 1 ) through a first unilateral diode (D 1 ); wherein two terminals of a first set switch-on contacts (HZJ 1 ) of the switch-on contact switch being connected to the upper end of the first pulse coil (L 1 ) and a positive terminal of the switch-on energy storage circuit (HZ) respectively; wherein two terminals of a second set switch-on contacts (HZJ 2 ) of the switch-on contact switch being connected to the lower end of the first pulse coil (L 1 ) and the upper end of the second pulse coil (L 2 ) respectively; and wherein two terminals of a third set switch-on contacts (HZJ 3 ) of the switch-on contact switch being connected to the lower end of the second pulse coil (L 2 ) and a negative terminal of the switch-on energy storage circuit (HZ) respectively.