Since the self holding solenoid (also known as magnetic lock solenoid), its structure is similarto a frame type solenoid, but containing a high performance permanent magnet. When the coil is electrified , the shaft core to generate axial displacement, after power off, in a closed magnetic field of the permanent magnet, can keep the shaft core at the position ( self lock) of the after electric displacement, and no longer need to maintain power input. Attract and reset by the pulse power drive. Has the advantages of electricity save, small temperature rise, high power.
This product is divided into two types: single direction and bi – stable ( bidirectional) self holding . Single direction self holding solenoid only keep the iron core ( self – locking ) in a position of the end of stroke. Bidirectional self holding solenoid adopt dual coil structure, can keep the iron core keep (selflocking) in the beginning and the end of the stroke in two different positions, and two different positions with the equal output torque (with bi-stable characteristics)
