| 摘要 |
The electronic bias circuit has a rectifier (2) for rectifying the supply voltage, coupled to a current converter (3), in turn coupled to a load circuit (4) for supplying at least one gas discharge lamp (5). The brightness of the lamp is controlled via a regulation device (6, 7) with a fuzzy regulator (7), providing an outlet signal determining the setting value of at least one physical operating parameter of the current converter or the load circuit, in dependence on at least one input signal. Pref. the fuzzy regulator is supplied with a difference value obtained by comparing the actual operating current of the lamp with the required lamp operating current and is used for regulating the pulse ratio or frequency of the lamp current.
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