Version 4
SHEET 1 880 680
WIRE 624 -80 512 -80
WIRE 512 -48 512 -80
WIRE 512 96 512 32
WIRE 96 112 144 64
WIRE 256 112 208 64
WIRE 336 112 256 112
WIRE 96 144 96 112
WIRE 256 144 256 112
WIRE 336 144 336 112
WIRE 448 144 416 144
WIRE 512 224 512 192
WIRE 512 224 336 224
WIRE 96 256 96 224
WIRE 176 256 96 256
WIRE 256 256 256 208
WIRE 256 256 176 256
WIRE 336 256 336 224
WIRE 336 256 256 256
WIRE 512 256 512 224
WIRE 512 368 512 336
WIRE 624 368 624 -80
WIRE 624 368 512 368
FLAG 176 256 0
SYMBOL voltage 96 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 240 144 R0
SYMATTR InstName C1
SYMATTR Value 10
SYMATTR SpiceLine V=16
SYMBOL res 432 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 5700
SYMBOL npn 448 96 R0
SYMATTR InstName Q1
SYMBOL res 496 240 R0
SYMATTR InstName Summer
SYMATTR Value 187
SYMBOL voltage 512 48 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 3
SYMBOL diode 144 80 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
TEXT 62 374 Left 2 !.tran 0.02