Output circuit for magnetic / electronic transformer

摘要

Circuits (1) for receiving output signals from transformers (2) comprise filters (11) and switches (12). In the case of magnetic/electronic transformers, the filters (11) are activated/deactivated, for example for filtering/not filtering unwanted signals coming from converters (4). The filters (11) may comprise capacitors. The switches (12) may comprise fuses. Output signals of magnetic/electronic transformers comprise relatively low/high frequency signals that result in relatively small/large currents flowing through the capacitors, which currents will not blow/blow the fuses. The capacitors, when activated, form, together with leakage inductances of the magnetic transformers, electromagnetic interference filters. Alternatively, the circuits (1) may further comprise detectors (13) for detecting transformer types and for controlling the switches (12) in response to detection results. Then, possibly, the detectors (13) are arranged to detect frequency signals in the output signals and comprise comparators (15) for comparing detection results (14) with threshold values.

主权项

1. A circuit for receiving an output signal from an electronic transformer or a magnetic transformer, the circuit comprising:
a filter; and a switch electrically coupled to the filter, in the case of the magnetic transformer, configured to place the filter in an activated mode, and in the case of the electronic transformer, the switch is configured to place the filter in a deactivated mode.