Vehicle light and ignition circuit An ignition circuit for a semiconductor light source (110; 110_1; 110_2) includes a light control circuit (240; 240A; 240B; 240C) and a circuit for constant current (220; 220E). The light control circuit (240; 240A; 240B; 240C) is configured to generate a pulsed light control signal having a duty cycle corresponding to the input pulse signal and having at least one smooth edge on each pulse. The constant current circuit (220; 220E) includes a linear regulator (210; 210E; 210F). The constant current circuit (220; 220E) is configured to stabilize a current of fire flowing in the semiconductor light source (110; 110_1; 110_2) at a target amount corresponding to the light control signal. Figure for the abstract: Fig. 3.
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