A touch sensor including an electrostatic discharge pattern. The retina is illuminated, if a real image of the exit pupil of the illumination unit and a real image of an entrance pupil of a camera unit are formable in a position ranging from the cornea to the backside of the crystalline lens with the light. It comprises a piston provided with a plate cooperating with the plate of the control shaft with the interposition of balls cooperating with tracks in the form of ramps to transform the relative rotational motion of one plate relative to the other into a translational motion of the piston. , a programmed microprocessor, receives inputs from the absorption system, the heat sources, and loads and a lookup table and provides outputs to select and control the heat sources and maximize their efficiency. The controller is further configured to activate the DC-to-DC converter and to deactivate the regulator when the output demand transitions from the second demand level to the first demand level.