A medical supply unit including a carrier with longitudinal edges and longitudinal faces is provided such that the longitudinal faces are provided with openings at the faces of which resilient fastener elements are provided. The system further includes transformer circuitry configured to transform the AC signal into a sinusoidal AC signal, second stage circuitry configured to rectify the sinusoidal AC signal to a DC output signal, and hybrid control circuitry configured to modulate the first and second gate control signals, wherein the modulation comprises pulse frequency modulation and pulse width modulation. The captured GPS-tagged images are stitched together into an image mosaic using the GPS-aided positions. A differential pair of transistors is disposed such that one side of the sourcedrain paths are tied together and to the common node, with the other side of the sourcedrain paths thereof for each of the transistors in the differential pair interfaced to the positive and negative outputs, respectively for applying drive thereto. A collar unit with gas channels presses against a flange of the anterior section whilst blowing jets of gas towards an interface between a \u201cmonomer\u201d ring formed around the lens. The armature of the liquid outlet valve and the armature of the air inlet valve are arranged consecutively in their longitudinal direction of displacement.