R26 47 R15 510k R7 330k R27 510k R3 330k R2 option 220k R25 47 R11 R13 47k 47k Vbulk - + R14 NTC R20 510k D1 1N964 1N4148 C12 82uF 400 V 10 R21 22 L1 D6 C11 470n X2 C8 1nF F1 2AT C10 R5 22pF 1.8k 250 V 85-265 V rms D3 1N4937 1 6 2 5 3 4 C15 220p . 2 L2 2.2uH C7 12 220uF Ns 5-6 C5b C5a 680uF 680uF R8 1k Naux 12 R12 18k D7 1N4937 C17 100uF R10 20k 22 C4 100pF 1N4148 R16 C3 4.7uF 8-7 . Q1 2N2907 C18 22pF . D4 1N4937 R24 220 NCP1250 2 x 10mH Wurth 744822120 11 Np 1 R22 470k IN R17 510k 3 C9 330pF D10 IC4 KBU4K T1 Bridge C2 10n D5 NTST30100SG 1 kV C6 10nF R18 22k R19 1k C5 10nF R23 1k IC2 TL431 R6a R6b R6c 1.3 1.3 1.3 C13 2.2nF Type = Y1 R9 10k V / 3.3 A