parallel with a secondary winding of the isolation transformer a current sensing resistor coupled between the secondary winding and a circuit ground for the second stage a filtering circuit is coupled on a first end to a node between the secondary winding and the current sensing resistor and on a second end to the circuit ground a feedback circuit is coupled between the first stage and the filtering circuit and configured to deliver a control signal corresponding to current through the secondary winding application_number US 201615266211 A description referring generally to fig1 3 various exemplary embodiments of the present invention may now be described in detail where the various figures may describe embodiments sharing various common elements and features with other embodiments similar elements and features are given the same reference numerals and redundant description thereof may be omitted below in various embodiments as described below a multi channel power converter may be provided for a lighting fixture not shown having a plurality of lighting sources disposed therein in one example each channel is configured with output terminals for association with an led module having a circuit board and an array of light emitting diodes leds disposed thereon with initial reference to a multi channel power converter 100 as shown in fig1 one straightforward solution to the aforementioned problems is to provide multiple totally independent class ii output channels in the example shown as well as in subsequent examples a dual channel converter is provided but additional channels are considered as within the scope of a multi channel converter of the present invention as shown in fig1 each channel using a first channel 102.