- weird Fan control
- Fans super load
- good input current carachteristics
- idle consumption high 20W
- efficiency 89-92% TODO chart
- distored sinosoidal, related to noise/wine?
- audible noise vanish when touching the IGBT heat sink. 10 mA leakage current to earth
- uses a single toroid transformer
- primary current sense transformer (for flux compensation?)
input current (yellow) and output current (red). The output has some distortion after each zero crossing.