| 摘要 |
The invention relates to a circuit arrangement for the dimmable supply of power to at least one lighting means (5) which can be operated with DC voltage/current from an AC power system (N, L), wherein a dimming signal-generating circuit (11) is configured - to detect the switch-on/switch-off state of a power system switch (1) on the basis of the presence or absence of a voltage and/or of a current from the AC power system (N, L), and to detect the time period in which the power system switch (1) is in a switch-off state – to initiate a dimming process when a definable first time period (δ) is exceeded, and – to continue the dimming process for the further time period in which the power system switch (1) is in the switch-off state, and – to detect a subsequent changeover of the power system switch (1) into the switch-on state and to end the dimming process by maintaining the value last reached in the dimming process, wherein an energy store (9) is designed to supply energy in the interim to the lighting means (5), the detector circuit (10) the dimming signal-generating circuit (11) and the actuation circuit (8) during the time period of the switch-off state of the power system switch (1). |
