Version 4
SHEET 1 880 696
WIRE -352 -480 -576 -480
WIRE -192 -480 -352 -480
WIRE -48 -480 -192 -480
WIRE 384 -480 -48 -480
WIRE 656 -480 384 -480
WIRE -352 -384 -352 -480
WIRE -192 -384 -192 -480
WIRE -48 -384 -48 -480
WIRE 656 -320 656 -480
WIRE -192 -272 -192 -320
WIRE -48 -272 -48 -304
WIRE 0 -272 -48 -272
WIRE 176 -272 64 -272
WIRE 176 -240 176 -272
WIRE -352 -224 -352 -304
WIRE -48 -224 -48 -272
WIRE -192 -176 -192 -208
WIRE -192 -176 -288 -176
WIRE -112 -176 -192 -176
WIRE 384 -176 384 -480
WIRE -192 -128 -192 -176
WIRE 320 -128 -48 -128
WIRE -48 -96 -48 -128
WIRE -576 -64 -576 -480
WIRE -352 -64 -352 -128
WIRE -352 -64 -448 -64
WIRE -288 -64 -352 -64
WIRE 32 -48 -16 -48
WIRE 176 -48 176 -160
WIRE 176 -48 96 -48
WIRE 384 -48 384 -80
WIRE 544 -48 448 -48
WIRE -448 32 -448 -64
WIRE -288 32 -288 -64
WIRE -192 32 -192 -48
WIRE -720 80 -832 80
WIRE -576 80 -576 16
WIRE -576 80 -640 80
WIRE -512 80 -576 80
WIRE -192 80 -224 80
WIRE -16 80 -16 -48
WIRE -16 80 -192 80
WIRE 16 80 -16 80
WIRE 176 80 176 -48
WIRE 176 80 96 80
WIRE 384 80 384 32
WIRE 384 80 176 80
WIRE 448 80 448 -48
WIRE 448 80 384 80
WIRE 528 80 448 80
WIRE 656 80 656 -240
WIRE 656 80 608 80
WIRE 768 80 656 80
WIRE -48 96 -48 -32
WIRE 384 112 384 80
WIRE 768 128 768 80
WIRE -192 144 -192 80
WIRE -48 176 -48 160
WIRE 96 176 -48 176
WIRE 96 208 96 176
WIRE -48 224 -48 176
WIRE 384 224 384 192
WIRE -832 256 -832 80
WIRE -192 272 -192 224
WIRE 96 272 16 272
WIRE 320 272 96 272
WIRE -48 352 -48 320
WIRE -832 384 -832 336
WIRE 656 384 656 80
WIRE -448 400 -448 128
WIRE -112 400 -448 400
WIRE -448 496 -448 400
WIRE -448 608 -448 576
WIRE -288 608 -288 128
WIRE -288 608 -448 608
WIRE -48 608 -48 448
WIRE -48 608 -288 608
WIRE 384 608 384 320
WIRE 384 608 -48 608
WIRE 656 608 656 464
WIRE 656 608 384 608
FLAG -192 32 0
FLAG 768 128 0
FLAG -192 272 0
FLAG -832 384 0
FLAG 544 -48 out
IOPIN 544 -48 Out
SYMBOL pnp -224 128 R180
SYMATTR InstName Q1
SYMATTR Value BC556B
SYMBOL pnp -288 -128 R180
SYMATTR InstName Q2
SYMATTR Value 2N3906
SYMBOL pnp -512 128 M180
WINDOW 3 7 170 Left 2
SYMATTR Value BC556B
SYMATTR InstName Q3
SYMBOL pnp -112 -128 M180
SYMATTR InstName Q4
SYMATTR Value 2N2905A
SYMBOL pnp 320 320 M180
SYMATTR InstName Q5
SYMATTR Value BD238
SYMBOL npn 16 224 M0
SYMATTR InstName Q6
SYMATTR Value 2N3904
SYMBOL npn -112 352 R0
SYMATTR InstName Q7
SYMATTR Value 2N2219A
SYMBOL npn 320 -176 R0
SYMATTR InstName Q8
SYMATTR Value BD237
SYMBOL diode -208 -272 R0
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL diode -208 -384 R0
SYMATTR InstName D2
SYMATTR Value 1N914
SYMBOL res -368 -400 R0
SYMATTR InstName R1
SYMATTR Value 180
SYMBOL res -64 -400 R0
SYMATTR InstName R2
SYMATTR Value 7.5
SYMBOL res -208 -144 R0
SYMATTR InstName R3
SYMATTR Value 8.2k
SYMBOL diode -64 -96 R0
WINDOW 3 -84 60 Left 2
SYMATTR Value 1N4148
SYMATTR InstName D3
SYMBOL diode -64 96 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res -464 480 R0
SYMATTR InstName R4
SYMATTR Value 680
SYMBOL schottky 112 272 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -83 69 Left 2
SYMATTR InstName D5
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -208 128 R0
SYMATTR InstName R5
SYMATTR Value 270
SYMBOL res 160 -256 R0
SYMATTR InstName R6
SYMATTR Value 220
SYMBOL res 112 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 2.7k
SYMBOL res 624 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 6
SYMBOL cap 64 -288 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100µ
SYMBOL voltage 656 -336 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 20
SYMBOL voltage 656 368 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 20
SYMBOL voltage -832 240 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMATTR Value SINE(0 1.5 1k)
SYMBOL cap 96 -64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 22p
SYMBOL res 368 -64 R0
SYMATTR InstName R9
SYMATTR Value 0.22
SYMBOL res 368 96 R0
SYMATTR InstName R10
SYMATTR Value 0.22
SYMBOL res -624 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 270
SYMBOL res -592 -80 R0
SYMATTR InstName R12
SYMATTR Value 1Meg
TEXT -872 -56 Left 2 !.tran 500m
TEXT -1080 -176 Left 2 !;ac oct 100 10 10meg
TEXT -920 -352 Left 2 !.four 1k 10 -1 V(out)