Version 4
SHEET 1 972 680
WIRE 912 80 864 80
WIRE 336 96 288 96
WIRE 640 128 640 80
WIRE 720 128 720 80
WIRE 64 144 64 96
WIRE 144 144 144 96
WIRE 784 176 720 176
WIRE 64 256 64 224
WIRE 208 256 208 192
WIRE 208 256 64 256
WIRE 336 256 336 176
WIRE 336 256 208 256
WIRE 640 256 640 208
WIRE 784 256 784 240
WIRE 784 256 640 256
WIRE 912 256 912 160
WIRE 912 256 784 256
WIRE 208 272 208 256
WIRE 720 272 720 176
WIRE 784 272 784 256
WIRE 912 272 912 256
WIRE 912 352 720 352
WIRE 336 384 288 384
WIRE 64 432 64 384
WIRE 144 432 144 384
WIRE 64 560 64 512
WIRE 208 560 208 544
WIRE 208 560 64 560
WIRE 336 560 336 464
WIRE 336 560 208 560
WIRE 208 576 208 560
FLAG 208 272 0
FLAG 784 272 0
FLAG 208 576 0
SYMBOL npn 144 96 R0
SYMATTR InstName Q1
SYMATTR Value 2N3055
SYMBOL voltage 64 128 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 5 10k)
SYMBOL res 48 128 M90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 2k
SYMBOL res 304 80 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL voltage 336 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 10
SYMBOL npn 720 80 R0
SYMATTR InstName Q2
SYMATTR Value 2N3055
SYMBOL voltage 640 112 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 5 10k)
SYMBOL res 624 112 M90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 2k
SYMBOL res 880 64 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 10
SYMBOL voltage 912 64 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 10
SYMBOL schottky 768 176 R0
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL current 720 272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value 10m
SYMBOL voltage 912 256 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 10
SYMBOL npn 144 384 R0
SYMATTR InstName Q3
SYMATTR Value 2N3055
SYMBOL voltage 64 416 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value SINE(0 5 10k)
SYMBOL res 48 416 M90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 2k
SYMBOL res 304 368 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 10
SYMBOL voltage 336 368 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V7
SYMATTR Value 10
SYMBOL schottky 192 480 R0
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
TEXT -122 108 Left 0 !.tran 0 .05 0 1µ