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DTC 4 FB 3 1IN+ 1 1IN- 2 2IN+ 16 2IN- 15 REF 14 C1 8 E1 9 C2 11 E2 10 RT 6 CT 5 OCTRL 13 VCC 12 GND 7 U1 TL494 0 %RV2 10k R2 10k R3 4kR4 1k R5 1k C2 0.47u BAT1 12V R8 68R C3 1000uF C4 22n VOpAmpFB+ VOpAmpFB- FB VREF C5 15p VREF R15 510 R14 5k1 R17 5k1 VREF FB R16 51k VOPAMPFB- 1 0 0 % RV1 50k R6 4k7 Q4 IRFZ44N R10 10R R11 10k R12 0.03 R13 4k7 VOPAMPFB+ TRAN-2P2S C6 680uF D1 MBR6045WT C7 680uF Vout Q1 2N2222 Q2 2N2907 Q3 2N2222 R9 133R R7 1.3k VFB V D T C VOPAMPFB- VC1 VD R18 5R Vsense V G VG Vsense VG VSENSE VCTRT A B C D Vctrt Vctrt IL 1 IL2 IG V ir e f CC CV IOUT TR1 30uH 30uH k 0.9
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