CPC H05B 45/382 (2020.01) [H05B 45/36 (2020.01)] | 13 Claims |
1. An isolated driver (100) for lighting means (109), comprising:
a primary circuit (100a);
a secondary circuit (100b);
an isolation barrier (106) separating the primary circuit (100a) and the secondary circuit (100b), wherein a ground potential of the primary circuit (100a) and a ground potential of the secondary circuit (100b) are connected via a capacitor (107);
a shunt resistor (113) connected in series between the capacitor (107) and the ground potential of the secondary circuit (100b); and
a control circuit (111) on the secondary side (100b), monitoring a current to/from the capacitor (107) to the ground potential of the secondary circuit (100b) by monitoring the voltage drop across the shunt resistor (113) and issuing a mains (101) failure signal in case the current does not meet predefined conditions.
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