Version 4
SHEET 1 1376 680
WIRE 160 -160 -240 -160
WIRE 416 -160 160 -160
WIRE 160 -80 160 -160
WIRE 416 -16 416 -160
WIRE 160 32 160 0
WIRE 192 32 160 32
WIRE 224 32 192 32
WIRE 352 32 304 32
WIRE 160 80 160 32
WIRE 544 80 416 80
WIRE 624 80 544 80
WIRE 160 160 160 144
WIRE 256 160 160 160
WIRE 336 160 256 160
WIRE 544 160 544 80
WIRE 160 176 160 160
WIRE 624 176 624 80
WIRE 0 256 -112 256
WIRE 48 256 0 256
WIRE 112 256 48 256
WIRE -240 272 -240 -160
WIRE -112 272 -112 256
WIRE 336 272 336 160
WIRE 48 320 48 256
WIRE 144 320 48 320
WIRE 272 320 224 320
FLAG 160 272 0
FLAG -112 352 0
FLAG -240 352 0
FLAG 544 240 0
FLAG 624 240 0
FLAG 112 32 Ztop
FLAG 624 80 Vout
FLAG 0 256 Pulse
FLAG 192 32 Ztop
FLAG 336 368 0
FLAG 256 160 Zbot
SYMBOL nmos 112 176 R0
SYMATTR InstName M1
SYMBOL zener 176 144 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value DFLZ33
SYMBOL res 144 -96 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 320 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL npn 352 -16 R0
SYMATTR InstName Q1
SYMBOL voltage -112 256 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 1ms 0 0 1ms 2)
SYMBOL voltage -240 256 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 40
SYMBOL res 528 144 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL cap 608 176 R0
SYMATTR InstName C1
SYMATTR Value 0.1µf
SYMBOL npn 272 272 R0
SYMATTR InstName Q2
SYMBOL res 240 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1k
TEXT -272 376 Left 2 !.tran 3ms
TEXT 488 -136 Left 2 ;Simulation of power supply circuitry from C&F.\nThis circuit did not appear that it could work as intended,\nand this simulation proves that is the case.
