R1-1K R2-220 R3-68 R4-18 2W R5-18 2W R6-68 R7-220 R8-1K R9-12K R10-10K R11-18K R12-4.7K R13-4.7K R14-* see below R15-2.2 2W R16* see below R17-100 2W C1-0.047 250V C2-0.047 250V C3-0.1uF C4-1000uF 25v C5-1000Uf 25v C6- 47uF 400V C7-0.1uF 400V C8-4u7 35v C9-0.01uF C10-1000pF non ceramic C11-1uF Q1-2SA1115 Q2-2SA1115 Q3-MTP75N06, for 100W or 125W, use SUP75N06 Q4-MTP75N06 for 100W or 125W, use SUP75N06 D1-1N4148 D2-1N4002 D3-12V 1/2W Zener Diode D4-1N4148 D5~D8 UF4007 D9-GP-15J IC-TL494 Remember to install the jumper J1 before install the switching transformer! For R16 and R14, the feedback resistor can be set to reference of 5V, ( practically 4.95V) and current is around 1mA. For 240V-280V, R14 can be 270K ohm 2W, for 280-300V will be 330Kohm 2W, and 390Kohm 2W for 360Vabove. For example, AH-125W 350V output will be R14= 390K 2W, R16= 5.6K 0.25W 390K + 5.6K = 395.6K 350V/395.6K= 0.8847mA Voltage across R14= 5.6k X 0.8847 = 4.95V ( same as reference voltage) to increase the output voltage slightly, parallel a 100K or 82K with 5.6K and you will get 360V~375V.