Current sensing resistors are connected directly to output terminals of MOSFETs forming the series switching stage of a PWM sinewave dimmer. The conducting pole is mounted on the circuit board and includes a breakable portion, the breakable portion is configured to be the part that breaks when the conducting pole is crumpled. The inputs are positioned on the valve so that the water input is positioned downstream of the compressed air input, and the particulate cleaning medium input is positioned downstream of both the compressed air and water inputs. The mandrel arm in the position for extrusion is arranged eccentric in cross-section with respect to the container chamber and the die opening and the die opening is arranged eccentric in cross-section with respect to the container chamber. Subsequently, the spectacle lens is shifted to a marking start position for conducting marking. To increase the aperture size for elements with a higher impedance, the same sigma-delta converters may be used as separate receive beamformer channels without the summation.