Control gear with staggered overvoltage and overcurrent protection for the control of intelligent light sources and devices as well as light sources with this control gear

摘要

To a universally applicable, flexible and highly integrated control gear for the control of various bulbs, in which by staggered protective measures from the input and the output protection of the entire operating device and the downstream devices is guaranteed, is - starting from the preamble of claim 1 - with the coarse protection (G), which short-circuits the mains voltage occurring at the input of the operating device, both a first branch for connecting a luminous means to a first of the interface circuits (SS1) and a second branch for connecting at least one communication module to a second of the interface circuits (SS2) connected. In the first branch is connected to the coarse protection (G) a line filter (NF) and to the line filter (NF) a clamping circuit (K), consisting of the fine protection (F) and a first energy absorber (E1), respectively. If the residual voltage of the pulse is too high, the fine protection (F) activates the first energy absorber (E1) and the overvoltage pulse is short-circuited and the short circuit is deactivated again when the next zero crossing of the mains voltage is reached. A second energy absorber (E2) is connected to the first energy absorber (E1), which limits the current when it is switched on by means of a temperature-dependent resistor (NTC). Furthermore, the first interface circuit (SS1) has an overvoltage and overcurrent protection (ÜS) and in the second branch is connected to the coarse protection (G) a middle protection (M) consisting of a transformer (Ü) and a first fine protection circuit (F1) connected , With the first fine protection circuit (F) is a filter (FK) for the separation of parallel fed into the power supply network communication signals and with this filter (FK) is a second fine protection circuit (F2) is connected. To protect the second interface circuit (SS2) of the operating device from overvoltages and overcurrents that act on the operating device from the communication module, the second interface circuit (SS2) has overvoltage and overcurrent protection (ÜS). The invention is in the field of overvoltage protection systems.