Version 4 SHEET 1 2904 1364 WIRE 64 -528 -48 -528 WIRE 816 -528 64 -528 WIRE 1104 -528 816 -528 WIRE 1248 -528 1104 -528 WIRE 1968 -528 1248 -528 WIRE 2240 -528 1968 -528 WIRE 2432 -528 2240 -528 WIRE 2528 -528 2432 -528 WIRE 2576 -528 2528 -528 WIRE 2848 -528 2576 -528 WIRE 1968 -384 1968 -528 WIRE 1104 -336 1104 -528 WIRE 1248 -336 1248 -528 WIRE 2240 -288 2240 -528 WIRE 1968 -240 1968 -304 WIRE 2176 -240 1968 -240 WIRE 1248 -160 1248 -256 WIRE 1248 -160 1184 -160 WIRE 1968 -144 1968 -240 WIRE 816 -128 816 -528 WIRE 2432 -112 2432 -528 WIRE 2240 -96 2240 -192 WIRE 2240 -96 2032 -96 WIRE 2576 -80 2576 -528 WIRE 1184 -32 1184 -160 WIRE 2240 16 2240 -96 WIRE -464 224 -512 224 WIRE -272 224 -464 224 WIRE -48 224 -48 -528 WIRE -48 224 -272 224 WIRE 368 224 208 224 WIRE 512 224 368 224 WIRE 656 224 512 224 WIRE 816 224 816 -48 WIRE 816 224 656 224 WIRE 960 224 816 224 WIRE 1104 224 960 224 WIRE 1184 224 1184 32 WIRE 1184 224 1104 224 WIRE 1248 224 1184 224 WIRE 1392 224 1248 224 WIRE 1616 224 1392 224 WIRE 1744 224 1616 224 WIRE 1968 224 1968 -48 WIRE 1968 224 1824 224 WIRE 2080 224 1968 224 WIRE 2144 224 2080 224 WIRE 2288 224 2208 224 WIRE 2432 224 2432 -32 WIRE 2432 224 2368 224 WIRE 2576 224 2432 224 WIRE 208 256 208 224 WIRE 368 256 368 224 WIRE 512 256 512 224 WIRE 656 256 656 224 WIRE 816 256 816 224 WIRE 960 256 960 224 WIRE 1104 256 1104 224 WIRE 1248 256 1248 224 WIRE 1392 256 1392 224 WIRE -512 288 -512 224 WIRE 2848 336 2848 -528 WIRE -48 352 -48 224 WIRE 208 368 208 336 WIRE 368 368 368 336 WIRE 512 368 512 336 WIRE 656 368 656 336 WIRE 816 368 816 336 WIRE 960 368 960 336 WIRE 1104 368 1104 336 WIRE 1248 368 1248 336 WIRE 1392 368 1392 336 WIRE -464 384 -464 224 WIRE -272 400 -272 224 WIRE 1616 448 1616 224 WIRE 1968 528 1968 224 WIRE -464 560 -464 464 WIRE -464 560 -512 560 WIRE -272 560 -272 480 WIRE -272 560 -464 560 WIRE -192 560 -272 560 WIRE -48 560 -48 432 WIRE -48 560 -128 560 WIRE 96 560 96 400 WIRE 96 560 -48 560 WIRE 144 560 144 416 WIRE 144 560 96 560 WIRE 304 560 304 416 WIRE 304 560 144 560 WIRE 448 560 448 416 WIRE 448 560 304 560 WIRE 592 560 592 416 WIRE 592 560 448 560 WIRE 752 560 752 416 WIRE 752 560 592 560 WIRE 896 560 896 416 WIRE 896 560 752 560 WIRE 1040 560 1040 416 WIRE 1040 560 896 560 WIRE 1184 560 1184 416 WIRE 1184 560 1040 560 WIRE 1328 560 1328 416 WIRE 1328 560 1184 560 WIRE 2080 608 2080 224 WIRE 1616 656 1616 512 WIRE 1968 656 1968 608 WIRE 1968 656 1616 656 WIRE 2016 656 1968 656 WIRE 64 688 64 -528 WIRE 208 688 208 464 WIRE 368 688 368 464 WIRE 368 688 208 688 WIRE 512 688 512 464 WIRE 512 688 368 688 WIRE 656 688 656 464 WIRE 656 688 512 688 WIRE 816 688 816 464 WIRE 816 688 656 688 WIRE 960 688 960 464 WIRE 960 688 816 688 WIRE 1104 688 1104 464 WIRE 1104 688 960 688 WIRE 1248 688 1248 464 WIRE 1248 688 1104 688 WIRE 1392 688 1392 464 WIRE 1392 688 1248 688 WIRE 1968 784 1968 656 WIRE 2528 816 2528 -528 WIRE -48 832 -48 560 WIRE 1392 832 1392 688 WIRE 1904 832 1392 832 WIRE 1392 896 1392 832 WIRE 1968 912 1968 880 WIRE 2080 912 2080 704 WIRE 2080 912 1968 912 WIRE -48 1056 -48 912 WIRE 64 1056 64 752 WIRE 64 1056 -48 1056 WIRE 1392 1056 1392 976 WIRE 1392 1056 64 1056 WIRE 1968 1056 1968 912 WIRE 1968 1056 1392 1056 WIRE 2016 1056 1968 1056 WIRE 2240 1056 2240 96 WIRE 2240 1056 2096 1056 WIRE 2528 1056 2528 880 WIRE 2528 1056 2240 1056 WIRE 2592 1056 2528 1056 WIRE 2720 1056 2672 1056 WIRE 2848 1056 2848 416 WIRE 2848 1056 2800 1056 WIRE 2240 1200 2240 1056 WIRE 2240 1344 2240 1280 FLAG -512 288 0 FLAG 2240 1344 0 FLAG 2624 240 out FLAG -544 560 in SYMBOL pnp 144 464 M180 SYMATTR InstName Q1 SYMATTR Value BC557C SYMBOL pnp 448 464 M180 SYMATTR InstName Q3 SYMATTR Value BC557C SYMBOL pnp 592 464 M180 SYMATTR InstName Q4 SYMATTR Value BC557C SYMBOL res 192 240 R0 SYMATTR InstName R4 SYMATTR Value 22R SYMBOL res 352 240 R0 SYMATTR InstName R5 SYMATTR Value 22R SYMBOL res 496 240 R0 SYMATTR InstName R6 SYMATTR Value 22R SYMBOL res 800 240 R0 SYMATTR InstName R8 SYMATTR Value 22R SYMBOL res 640 240 R0 SYMATTR InstName R7 SYMATTR Value 22R SYMBOL res 944 240 R0 SYMATTR InstName R9 SYMATTR Value 22R SYMBOL res 1088 240 R0 SYMATTR InstName R10 SYMATTR Value 22R SYMBOL res 1232 240 R0 SYMATTR InstName R11 SYMATTR Value 22R SYMBOL res 1376 240 R0 SYMATTR InstName R13 SYMATTR Value 22R SYMBOL pnp 752 464 M180 SYMATTR InstName Q5 SYMATTR Value BC557C SYMBOL pnp 896 464 M180 SYMATTR InstName Q6 SYMATTR Value BC557C SYMBOL pnp 1040 464 M180 SYMATTR InstName Q7 SYMATTR Value BC557C SYMBOL pnp 1184 464 M180 SYMATTR InstName Q8 SYMATTR Value BC557C SYMBOL pnp 1328 464 M180 SYMATTR InstName Q9 SYMATTR Value BC557C SYMBOL res -64 816 R0 SYMATTR InstName R3 SYMATTR Value 15k SYMBOL res -64 336 R0 SYMATTR InstName R2 SYMATTR Value 22k SYMBOL cap -128 544 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL res -288 384 R0 SYMATTR InstName R1 SYMATTR Value 330R SYMBOL voltage -464 368 R0 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 0 SYMATTR Value2 AC 1 SYMATTR InstName V1 SYMATTR Value "" SYMBOL npn 1904 784 R0 SYMATTR InstName Q10 SYMATTR Value BC547C SYMBOL res 1376 880 R0 SYMATTR InstName R14 SYMATTR Value 68R SYMBOL res 1840 208 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R16 SYMATTR Value 390R SYMBOL pnp 2032 -48 R180 SYMATTR InstName Q11 SYMATTR Value BC557C SYMBOL pnp 2176 -192 M180 SYMATTR InstName Q13 SYMATTR Value BC557C SYMBOL zener 2544 880 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value EDZV12B SYMATTR Description Diode SYMATTR Type diode SYMBOL res 2112 1040 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R19 SYMATTR Value 220R SYMBOL res 2688 1040 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R24 SYMATTR Value 22R SYMBOL res 2816 1040 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R25 SYMATTR Value 56R SYMBOL cap 48 688 R0 SYMATTR InstName C15 SYMATTR Value 1mF SYMBOL res 1952 -400 R0 SYMATTR InstName R18 SYMATTR Value 180R SYMBOL res 2224 0 R0 SYMATTR InstName R21 SYMATTR Value 120k SYMBOL voltage 2848 320 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL pnp 2016 704 M180 SYMATTR InstName Q12 SYMATTR Value BC557C SYMBOL res 1952 512 R0 SYMATTR InstName R17 SYMATTR Value 620R SYMBOL res 800 -144 R0 SYMATTR InstName R50 SYMATTR Value 510 SYMBOL pnp 304 464 M180 SYMATTR InstName Q2 SYMATTR Value BC557C SYMBOL cap 2208 208 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 10µ SYMBOL res 2384 208 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R20 SYMATTR Value 1k SYMBOL res 2448 -16 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R23 SYMATTR Value 1Meg SYMBOL res 1088 -352 R0 SYMATTR InstName R12 SYMATTR Value 22R SYMBOL res 1232 -352 R0 SYMATTR InstName R15 SYMATTR Value 11R SYMBOL cap 1168 -32 R0 SYMATTR InstName C12 SYMATTR Value 2.2mF SYMBOL current 2240 1200 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 108 Left 2 SYMATTR SpiceLine load SYMATTR InstName I1 SYMATTR Value -0.0126 SYMBOL cap 1600 448 R0 SYMATTR InstName C13 SYMATTR Value 47p SYMBOL cap 80 336 R0 SYMATTR InstName C2 SYMATTR Value 1n SYMBOL cap 2560 -80 R0 SYMATTR InstName C17 SYMATTR Value 1n TEXT -536 1104 Left 2 !;tran 0.003 TEXT -512 1024 Left 2 !.ac oct 20 1 50000000 TEXT 104 152 Left 2 ;C2 not needed makes worse TEXT 1680 464 Left 2 ;C13 needed 10p min\n100p gives 2MHz TEXT 2088 1240 Left 2 ;LHC load TEXT 2688 336 Left 2 ;max -16V TEXT 1088 -680 Left 5 ;Crimson MC1 PCB TEXT 968 48 Left 2 ;-3dB 8Hz Gmax TEXT 2560 24 Left 2 ;Remove C17 on MC1 TEXT 1376 16 Left 2 ;Trim R31 or R14 to minimise R16 current\nR16 PD max 390mV\nR50 is added SMD on print 1206 TEXT 632 736 Left 2 ;C3 to C11 all removed TEXT 1072 1088 Left 2 ;appx -9V TEXT 1224 184 Left 2 ;appx -4.5V TEXT 1824 312 Left 2 ;appx -4.5V