Version 4 SHEET 1 880 808 WIRE -480 -240 -1568 -240 WIRE -1392 -128 -1456 -128 WIRE -1328 -128 -1392 -128 WIRE -1264 -128 -1328 -128 WIRE -1168 -128 -1264 -128 WIRE -1392 -96 -1392 -128 WIRE -1168 -80 -1168 -128 WIRE -1568 32 -1568 -240 WIRE -1568 32 -1888 32 WIRE -1520 32 -1568 32 WIRE -1392 32 -1392 -16 WIRE -1392 32 -1520 32 WIRE -1056 32 -1392 32 WIRE -880 32 -960 32 WIRE -816 32 -880 32 WIRE -672 32 -736 32 WIRE -880 80 -880 32 WIRE -672 96 -672 32 WIRE -1568 112 -1568 32 WIRE -1520 112 -1520 32 WIRE -1328 112 -1328 -128 WIRE -1040 112 -1040 80 WIRE -1040 112 -1232 112 WIRE -1456 128 -1456 -128 WIRE -1040 128 -1040 112 WIRE -1888 144 -1888 32 WIRE -880 208 -880 144 WIRE -672 208 -672 160 WIRE -1280 224 -1280 176 WIRE -1168 224 -1168 0 WIRE -1168 224 -1280 224 WIRE -1040 224 -1040 192 WIRE -1040 224 -1168 224 WIRE -1888 256 -1888 224 WIRE -1456 272 -1456 208 WIRE -1392 272 -1456 272 WIRE -1344 272 -1392 272 WIRE -1568 336 -1568 176 WIRE -1520 336 -1520 176 WIRE -1520 336 -1568 336 WIRE -1280 336 -1280 320 WIRE -1280 336 -1520 336 WIRE -1392 368 -1392 272 WIRE -1280 416 -1280 336 WIRE -1280 416 -1328 416 WIRE -1568 432 -1568 336 WIRE -1392 496 -1392 464 WIRE -1568 544 -1568 512 WIRE -1296 544 -1328 544 WIRE -1136 544 -1216 544 WIRE -1136 608 -1136 544 WIRE -1392 640 -1392 592 WIRE -1136 720 -1136 688 WIRE -1392 768 -1392 720 FLAG -1568 544 0 FLAG -1392 768 0 FLAG -880 208 0 FLAG -1888 256 0 FLAG -1136 720 0 FLAG -672 208 0 FLAG -1264 -128 +45 SYMBOL pmos -960 80 M270 SYMATTR InstName M1 SYMATTR Value RSJ250P10 SYMBOL zener -1552 176 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value BZX84C12L SYMATTR Description Diode SYMATTR Type diode SYMBOL res -1584 416 R0 SYMATTR InstName R1 SYMATTR Value 4k7 SYMBOL cap -1536 112 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL npn -1328 368 M0 SYMATTR InstName Q3 SYMATTR Value 2N3904 SYMBOL npn -1328 496 M0 SYMATTR InstName Q4 SYMATTR Value 2N3904 SYMBOL res -1200 528 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL voltage -1888 128 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 40 SYMBOL voltage -1136 592 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value PULSE(0 12 0 1n 1n 20u 40u) SYMBOL res -1408 624 R0 SYMATTR InstName R5 SYMATTR Value 2k7 SYMBOL npn -1328 176 R270 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL diode -1056 128 R0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL res -1184 -96 R0 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL pnp -1344 320 M180 SYMATTR InstName Q2 SYMATTR Value 2N3906 SYMBOL res -1472 112 R0 SYMATTR InstName R6 SYMATTR Value 10k SYMBOL voltage -1392 -112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 5 SYMBOL schottky -864 144 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D3 SYMATTR Value RBQ30NS45B SYMATTR Description Diode SYMATTR Type diode SYMBOL ind -720 16 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L1 SYMATTR Value 40µ SYMATTR SpiceLine Ipk=28 SYMBOL cap -688 96 R0 SYMATTR InstName C2 SYMATTR Value 100µ TEXT -1920 792 Left 2 !.tran 0 100m .5m