开关电源的软启动电路.pdf

1 1 100A 2 1 2 Rt 2SCRR 3 VD1VD4 R C C 80 R C 3SCRR 4 3 1 2 3 SCRR 4 SCRR 5 6 7 VD5VD6VT1RBCB RBCB VT2 SCR 4K1 R 5 R1 C1 V CC R2 K1 C2 C2 K1 R1K1 0.3 0.5 R1 RC C2 5 6 55 R1 C1 555 C2 R2 0.3 555 2 3 VT2 K1 R1 C1 RC 5 6 7 5V VT1I C2 IC1555 R1C1 5 1 R 2C2555 VT1 IC2 555 R1C1 R2C2