Electric device having low power consumption in the stand-by state

摘要

An electrical device, particularly having at least one lighting system having light emitting diodes, such as a television having LED backlighting (57), which has a stand-by mode (ZPM) with very low power consumption in which only one control unit (3) is supplied with power via a capacitive voltage divider. For this purpose, alongside parts of the power supply unit (2), the interference suppression capacitor (6) is also switched off.

主权项

1. An electrical device comprising a power supply unit (2) that has a voltage converter (8) and an interference suppression capacitor circuit (96) made up of at least one interference suppression capacitor (6, 60), and having a control unit (3) disposed on a primary side that has its own power supply circuit (10) directly connected to a mains voltage (7) and that can be controlled using an external signal (11), the electrical device (1) has an energy saving mode and the control unit (3) is configured to switch off the electrical energy on a secondary side of the power supply unit (2) when the electrical device (1) enters into the energy saving mode, the interference suppression capacitor circuit (96) is disposed on the primary side and the electrical device has at least one switch (62) to switch the interference suppression capacitor (6, 60) on or off or to change an overall capacitance of the interference suppression capacitor circuit (96).