| 摘要 |
A circuit (1) for an emergency lighting device is configured to be selectively put in at least the following states:
- a maintained mode in which the circuit (I) feeds a constant current through an emergency lighting means (4) and to an energy storage unit (5) in order to charge the energy storage unit (5), such that the emergency lighting means (4) are operated during charging of the energy storage unit (5); and
- a non-maintained mode in which the circuit (1) feeds a constant current to the energy storage unit (5) in order to charge the energy storage unit (5) without feeding the constant current through the emergency lighting means (4) such that the emergency lighting means (4) are not operated during charging of the energy storage unit (5). |
