Hi Ya Nuo, Happy new year 2012 !
based on: http://downloads.qi-hardware.com/hardware/led_power_supply/v1.0/bom/deng/bom.solder.u00403.xls.txt TR1 ~ 3 : transformer_37p_45x45mm TR4 ~ 5 : transformer_16p_30x30mm TR6 ~ 14 : transformer_4p_10x10mm Do you have more diy info or datasheet about TR1 ~ 14 ? Thanks, - adam
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