Version 4
SHEET 1 1340 844
WIRE -320 -384 -352 -384
WIRE -192 -384 -320 -384
WIRE 848 -336 640 -336
WIRE -192 -288 -192 -304
WIRE 640 -272 640 -336
WIRE -320 -240 -320 -304
WIRE -256 -240 -320 -240
WIRE -496 -208 -624 -208
WIRE 0 -192 -192 -192
WIRE 96 -192 0 -192
WIRE 432 -192 96 -192
WIRE 528 -192 512 -192
WIRE 592 -192 528 -192
WIRE 528 -176 528 -192
WIRE 640 -112 640 -176
WIRE 640 -112 528 -112
WIRE 1280 -112 1216 -112
WIRE 240 -64 144 -64
WIRE 336 -64 304 -64
WIRE 672 -64 512 -64
WIRE 736 -64 672 -64
WIRE -624 -48 -624 -208
WIRE -448 -48 -544 -48
WIRE -368 -48 -384 -48
WIRE 736 -48 736 -64
WIRE 848 -48 848 -336
WIRE 1280 -16 1280 -32
WIRE 1280 -16 1216 -16
WIRE -192 0 -192 -192
WIRE 0 0 0 -192
WIRE 640 0 640 -112
WIRE 640 0 432 0
WIRE 1280 0 1280 -16
WIRE 1216 16 1216 -16
WIRE -544 48 -544 -48
WIRE -528 48 -544 48
WIRE -368 48 -368 -48
WIRE -368 48 -384 48
WIRE -352 48 -368 48
WIRE -256 48 -272 48
WIRE 144 48 144 -64
WIRE 160 48 144 48
WIRE 224 48 224 -32
WIRE 336 48 336 -64
WIRE 336 48 304 48
WIRE 432 48 432 0
WIRE 512 48 512 -64
WIRE 640 48 640 0
WIRE 1088 64 960 64
WIRE 1120 64 1088 64
WIRE 1280 96 1280 80
WIRE 1280 96 1216 96
WIRE -464 112 -496 112
WIRE -192 112 -192 96
WIRE 0 112 0 96
WIRE 256 112 224 112
WIRE -464 144 -464 112
WIRE 256 144 256 112
WIRE -544 160 -544 48
WIRE -496 160 -544 160
WIRE 336 160 336 48
WIRE 336 160 288 160
WIRE 512 160 512 128
WIRE 512 160 336 160
WIRE 528 160 512 160
WIRE 640 160 640 128
WIRE 640 160 608 160
WIRE 704 160 640 160
WIRE 768 160 704 160
WIRE 960 160 960 144
WIRE -368 176 -368 48
WIRE -368 176 -432 176
WIRE 144 176 144 48
WIRE 176 176 144 176
WIRE 224 176 176 176
WIRE 704 176 704 160
WIRE -496 192 -592 192
WIRE 432 192 432 128
WIRE 432 192 288 192
WIRE -192 208 -192 192
WIRE 0 208 0 192
WIRE 1088 208 1088 144
WIRE 1088 208 1024 208
WIRE -464 240 -464 208
WIRE -464 240 -496 240
WIRE 256 240 256 208
WIRE 256 240 224 240
WIRE 512 256 480 256
WIRE 544 256 512 256
WIRE 640 256 640 160
WIRE 640 256 624 256
WIRE 768 256 768 240
WIRE -624 320 -624 48
WIRE 400 320 400 256
WIRE 400 320 -624 320
WIRE 768 320 400 320
WIRE 848 320 848 32
WIRE 848 320 768 320
WIRE 960 320 960 256
WIRE 960 320 848 320
FLAG 512 256 out
FLAG 704 176 0
FLAG 1216 16 0
FLAG 0 208 0
FLAG 736 32 0
FLAG 1216 -112 pos
FLAG 1216 96 neg
FLAG -352 -384 pos
FLAG 224 240 neg
FLAG 224 112 pos
FLAG -368 176 U_1
FLAG 96 -192 U_Q3
FLAG 672 -64 in
FLAG -496 -128 0
FLAG -192 208 0
FLAG -496 112 pos
FLAG -496 240 neg
FLAG -592 272 0
FLAG -320 -160 0
FLAG 176 176 U_3
FLAG 1120 64 pos
FLAG 1088 288 0
SYMBOL res 624 32 R0
SYMATTR InstName R1
SYMATTR Value .1
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL nmos 592 -272 R0
WINDOW 0 56 -24 Left 2
WINDOW 3 55 4 Left 2
SYMATTR InstName M1
SYMATTR Value IRF530
SYMBOL res -208 -400 R0
WINDOW 3 36 64 Left 2
SYMATTR Value 150
SYMATTR InstName R2
SYMBOL voltage 736 -64 R0
WINDOW 0 -73 42 Left 2
WINDOW 3 -79 -52 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(5 1 80e-6 1e-6 1e-6 30e-6 200e-6 1)
SYMBOL voltage 848 -64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V2
SYMATTR Value 50
SYMBOL res 640 240 R90
WINDOW 3 32 56 VTop 2
WINDOW 0 57 90 VBottom 2
SYMATTR Value 2
SYMATTR InstName R3
SYMBOL voltage 1280 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL voltage 1280 -128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 15
SYMBOL res 160 32 R90
WINDOW 0 -40 55 VBottom 2
WINDOW 3 -41 57 VTop 2
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL res -16 96 R0
WINDOW 3 37 66 Left 2
SYMATTR Value 10
SYMATTR InstName R5
SYMBOL res 624 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL npn 64 0 M0
WINDOW 0 80 36 Left 2
WINDOW 3 62 60 Left 2
SYMATTR InstName Q3
SYMATTR Value BC847C
SYMBOL res 208 64 R270
WINDOW 0 73 56 VTop 2
WINDOW 3 75 58 VBottom 2
SYMATTR InstName R9
SYMATTR Value 1.2K
SYMBOL cap 160 64 R270
WINDOW 0 75 29 VTop 2
WINDOW 3 77 31 VBottom 2
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL res 496 32 R0
SYMATTR InstName R11
SYMATTR Value 1K
SYMBOL res 416 32 R0
WINDOW 0 36 50 Left 2
SYMATTR InstName R12
SYMATTR Value 100
SYMBOL cap 512 -176 R0
WINDOW 3 64 7 Left 2
SYMATTR Value 10n
SYMATTR InstName C2
SYMBOL res 416 -176 R270
WINDOW 0 75 58 VTop 2
WINDOW 3 69 59 VBottom 2
SYMATTR InstName R6
SYMATTR Value 22
SYMBOL cap 752 256 R0
WINDOW 3 37 12 Left 2
WINDOW 0 37 -9 Left 2
SYMATTR Value 1e-6
SYMATTR InstName C3
SYMBOL Opamps\\OP37 256 112 M0
WINDOW 0 -54 -23 Left 2
WINDOW 3 -70 1 Left 2
SYMATTR InstName U3
SYMBOL pnp -256 -192 M180
SYMATTR InstName Q1
SYMATTR Value BC556B
SYMBOL res -336 -400 R0
WINDOW 0 -58 65 Left 2
WINDOW 3 -61 92 Left 2
SYMATTR InstName R14
SYMATTR Value 1K
SYMBOL res -336 -256 R0
SYMATTR InstName R15
SYMATTR Value 14K
SYMBOL Opamps\\OP37 -464 112 R0
WINDOW 0 36 98 Left 2
WINDOW 3 25 126 Left 2
SYMATTR InstName U1
SYMBOL npn -256 0 R0
WINDOW 0 80 36 Left 2
WINDOW 3 62 60 Left 2
SYMATTR InstName Q2
SYMATTR Value BC847C
SYMBOL res -208 96 R0
WINDOW 3 37 66 Left 2
SYMATTR Value 10
SYMATTR InstName R7
SYMBOL res -256 32 R90
WINDOW 0 -40 55 VBottom 2
WINDOW 3 -41 57 VTop 2
SYMATTR InstName R10
SYMATTR Value 100
SYMBOL res -640 -32 R270
WINDOW 3 71 60 VBottom 2
WINDOW 0 72 59 VTop 2
SYMATTR Value 1K
SYMATTR InstName R13
SYMBOL res -640 64 R270
WINDOW 3 -31 56 VBottom 2
WINDOW 0 -29 58 VTop 2
SYMATTR Value 10K
SYMATTR InstName R16
SYMBOL res -608 176 R0
WINDOW 3 37 66 Left 2
SYMATTR Value 1K
SYMATTR InstName R17
SYMBOL voltage -496 -224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value PULSE(0 .5 40e-6 1e-6 1e-6 100e-6 200e-6 1)
SYMBOL cap -528 64 R270
WINDOW 0 67 29 VTop 2
WINDOW 3 65 31 VBottom 2
SYMATTR InstName C4
SYMATTR Value 33p
SYMBOL res -480 64 R270
WINDOW 0 70 78 VTop 2
WINDOW 3 67 79 VBottom 2
SYMATTR InstName R18
SYMATTR Value 5K
SYMBOL schottky -448 -64 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 -28 94 VTop 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 304 -80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 -27 -36 VTop 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 976 48 M0
WINDOW 3 36 64 Left 2
SYMATTR Value 1K
SYMATTR InstName R19
SYMBOL pnp 1024 256 R180
WINDOW 0 73 97 Left 2
WINDOW 3 62 69 Left 2
SYMATTR InstName Q4
SYMATTR Value BC556B
SYMBOL res 1104 48 M0
WINDOW 0 -58 65 Left 2
WINDOW 3 -61 92 Left 2
SYMATTR InstName R20
SYMATTR Value 1K
SYMBOL res 1104 192 M0
SYMATTR InstName R21
SYMATTR Value 14K
SYMBOL res 752 144 R0
WINDOW 3 36 65 Left 2
SYMATTR Value 10
SYMATTR InstName R22
SYMBOL ind 384 272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10n
TEXT -128 248 Left 2 !.tran 0 500u 0 startup
TEXT 552 224 Left 2 ;Load