Version 4 SHEET 1 1664 680 WIRE 160 -288 -400 -288 WIRE 288 -288 160 -288 WIRE -400 -256 -400 -288 WIRE 160 -176 160 -288 WIRE 288 -176 288 -288 WIRE 528 -176 288 -176 WIRE 720 -176 624 -176 WIRE 832 -176 800 -176 WIRE 928 -176 832 -176 WIRE 960 -176 928 -176 WIRE 1104 -176 1040 -176 WIRE -48 -80 -288 -80 WIRE 576 -80 576 -112 WIRE 576 -80 464 -80 WIRE 832 -80 832 -176 WIRE 832 -80 672 -80 WIRE -288 -16 -288 -80 WIRE 288 -16 288 -176 WIRE 464 -16 464 -80 WIRE 464 -16 384 -16 WIRE 160 16 160 -96 WIRE 208 16 160 16 WIRE 576 16 576 -80 WIRE 672 16 672 0 WIRE 672 16 576 16 WIRE 576 32 576 16 WIRE 832 32 832 -80 WIRE 832 32 720 32 WIRE 720 64 720 32 WIRE 928 64 928 -176 WIRE 336 80 336 48 WIRE 352 80 336 80 WIRE 832 80 832 32 WIRE 480 96 -112 96 WIRE 1104 96 1104 -176 WIRE -400 128 -400 -176 WIRE -288 128 -288 64 WIRE -288 128 -400 128 WIRE 208 144 208 16 WIRE 336 144 208 144 WIRE 352 144 352 80 WIRE 352 144 336 144 WIRE 208 160 208 144 WIRE -288 176 -320 176 WIRE -176 176 -208 176 WIRE -128 176 -176 176 WIRE -48 176 -48 -80 WIRE 336 176 336 144 WIRE -128 192 -128 176 WIRE -80 192 -128 192 WIRE 16 208 -16 208 WIRE 32 208 16 208 WIRE 144 208 112 208 WIRE 480 208 480 96 WIRE 720 208 720 128 WIRE 720 208 480 208 WIRE 832 208 832 160 WIRE 832 208 720 208 WIRE -112 224 -112 96 WIRE -80 224 -112 224 WIRE 832 240 832 208 WIRE -320 256 -320 176 WIRE 336 272 336 240 WIRE 208 288 208 256 WIRE -176 304 -176 176 WIRE -144 304 -176 304 WIRE 16 304 16 208 WIRE 16 304 -80 304 WIRE -400 384 -400 128 WIRE -288 384 -320 336 WIRE -288 384 -400 384 WIRE -48 384 -48 240 WIRE -48 384 -288 384 WIRE 208 384 208 368 WIRE 208 384 -48 384 WIRE 336 384 336 352 WIRE 336 384 208 384 WIRE 832 384 832 320 WIRE 832 384 336 384 WIRE 928 384 928 128 WIRE 928 384 832 384 WIRE 1104 384 1104 176 WIRE 1104 384 928 384 WIRE 832 432 832 384 FLAG 832 432 0 SYMBOL ZZZ\\OpAmp\\LM358_ST -48 208 R0 WINDOW 3 7 99 Left 2 SYMATTR InstName U1 SYMBOL voltage -320 240 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 5V SYMBOL voltage -288 -32 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 15V SYMBOL npn 288 48 R270 SYMATTR InstName Q1 SYMATTR Value BD243A SYMBOL npn 528 -112 R270 SYMATTR InstName Q2 SYMATTR Value 2N3055 SYMBOL res 128 192 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL res 816 64 R0 SYMATTR InstName R3 SYMATTR Value 20k SYMBOL res 816 224 R0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL voltage -400 -272 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 40V SYMBOL npn 144 160 R0 SYMATTR InstName Q3 SYMATTR Value BC337 SYMBOL res 192 272 R0 SYMATTR InstName R5 SYMATTR Value 56 SYMBOL current 160 -176 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I1 SYMATTR Value 0.01 SYMBOL res 1056 -192 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 0.0001 SYMBOL res 320 256 R0 SYMATTR InstName R7 SYMATTR Value 56 SYMBOL cap 320 176 R0 SYMATTR InstName C1 SYMATTR Value 100µ SYMBOL res -192 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL res 656 -96 R0 SYMATTR InstName R9 SYMATTR Value 220 SYMBOL res 816 -192 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 0.33 SYMBOL cap -80 288 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL current 1104 96 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I2 SYMATTR Value PULSE(0.01 5 0 100u 100u 100m 200m 5) SYMBOL cap 704 64 R0 SYMATTR InstName C3 SYMATTR Value 100n SYMBOL cap 912 64 R0 SYMATTR InstName C4 SYMATTR Value 1µ TEXT -408 456 Left 2 !.tran 1 TEXT 296 440 Left 2 !;.step param C1 1u 10u 1u