Abstract: In a signal processor, a sampling arrangement (SH11, S12, SH13, ADC1) samples at least a first signal (YA) and a second signal (UA, VA) so as to obtain sampled first signal (YD1) and a sampled second signal (UD1, VD1), respectively. A folding compensator (LPF11, LPF12, LPF13, SUB11, SUB12, MUX12) compensates for a folding component in the sampled first signal (YD1) on the basis of a spectral portion of the sampled second signal (UD1, VD1) that is substantially free of components that originate from the second signal (UA, VA).

Abstract: A gas discharge lamp (1) with a discharge vessel (2), a first electrode (3) projecting into the discharge vessel (2), and a second electrode (4) projecting into the discharge vessel (2) is described. The first electrode (3) is connected to an electrically conductive first conductor surface (5) surrounding the discharge vessel (2). The second electrode (4) is connected to an electrically conductive second conductor surface (6) surrounding the discharge vessel (2) and arranged such that it overlaps the first conductor surface (5) so as to form a capacitance (C).

Abstract: A data processing circuit has four signal conductors between a driver and a receiver, and first and second, mutually conducting shield planes. First and second signal conductors form a symmetrical stack in a column between the first and the second plane. Third and fourth signal conductors are arranged substantially midway between the first and the second plane, on mutually opposite sides of the stack. The first, second, third and fourth signal conductors have respective widths so that respective transmission line impedances of transmission lines between each particular one of the first, second, third and fourth conductors and the first and second planes are substantially mutually equal.

Abstract: In a signal processor, a sampling arrangement (SH11, S12, SH13, ADC1) samples at least a first signal (YA) and a second signal (UA, VA) so as to obtain sampled first signal (YD1) and a sampled second signal (UD1, VD1), respectively. A folding compensator (LPF11, LPF12, LPF13, SUB11, SUB12, MUX12) compensates for a folding component in the sampled first signal (YD1) on the basis of a spectral portion of the sampled second signal (UD1, VD1) that is substantially free of components that originate from the second signal (UA, VA).

Abstract: A gas discharge lamp (1) is described with a discharge vessel (2) and electrodes (4, 5) projecting into the discharge vessel (2). The gas discharge lamp (1) is provided with a translucent, electrically conductive screening (9, 23) which screens the discharge vessel (2) and which comprises connection means (7, 10, 24, 27, 28). The screening (9, 23) of the gas discharge lamp (1) is connected to a screening (14, 17, 19) of an electrical system used for operating the gas discharge lamp (1) at least as regards high frequencies so as to form a coaxial screening system that encloses the discharge vessel (2) with its electrodes (4, 5).

Abstract: A processor reduces periodic interference signal components in an input signal to obtain a desired signal. The desired signal has a predefined characteristic during an interval of time. First, an interference-representing signal (S1-S13) is stored (SWM1, C1-C13) on the basis of the input signal that occurs within the interval of time during which the desired signal has the predefined characteristic. The interference-representing signal (S1-S13) represents at least one period of a periodic interfering signal. Then, on the basis of the interference-representing signal (S1-S 13), compensation (ICS) is repetitively provided (SWM2, SUB) for the periodic interfering signal.