The electronic actuator 660 may be fixed relative to the pivoting support 621. For example, the electronic actuator may be affixed to the system board 2 (see FIGS. 1-6), or to any wall of the chassis 3, or to some other object (e.g., another board) that is fixed to the system board 2 or chassis. Although the actuator 660 is shown as being forward of the mechanical linkage 651 in FIGS. 1-6, in other examples the actuator 660 could be located rearward of the mechanical linkage 651.
For example, the actuator 660 may include a solenoid 661, which includes a coil (not visible) surrounding a plunger 662 (aka armature) (see FIGS. 1-5B). A current is passed through the coil, generating a magnetic field that moves the plunger 662 transversely relative to the coil. The solenoid 661 may be a latching solenoid, which latches the plunger 662 in certain positions, or a constant current solenoid. The solenoid 661 may be controlled by simple logic that moves the plunger 662 between two predetermined positions responsive to actuation signals. An advantage of a latching solenoid is that it draws power only during actuation, as the plunger 662 is latched in position rather than needing to be held in position by constantly applying the magnetic field.
