Version 4 SHEET 1 2824 680 WIRE -256 -1040 -288 -1040 WIRE -240 -1040 -256 -1040 WIRE -16 -1024 -160 -1024 WIRE 64 -1024 -16 -1024 WIRE 208 -1024 144 -1024 WIRE 576 -1008 480 -1008 WIRE 640 -1008 576 -1008 WIRE -288 -976 -288 -1040 WIRE -160 -976 -160 -1024 WIRE 1152 -976 1072 -976 WIRE 1280 -976 1232 -976 WIRE 864 -960 704 -960 WIRE 96 -928 64 -928 WIRE 112 -928 96 -928 WIRE 480 -928 480 -1008 WIRE 816 -896 784 -896 WIRE 832 -896 816 -896 WIRE -160 -880 -160 -912 WIRE 64 -880 64 -928 WIRE 208 -880 208 -1024 WIRE 272 -880 208 -880 WIRE 416 -880 352 -880 WIRE 1200 -880 1168 -880 WIRE 1216 -880 1200 -880 WIRE 2272 -880 2208 -880 WIRE 2416 -880 2352 -880 WIRE 2576 -880 2496 -880 WIRE -16 -864 -16 -1024 WIRE 32 -864 -16 -864 WIRE 208 -848 208 -880 WIRE 208 -848 96 -848 WIRE 784 -848 784 -896 WIRE -288 -832 -288 -896 WIRE -48 -832 -288 -832 WIRE 32 -832 -48 -832 WIRE 704 -832 704 -960 WIRE 752 -832 704 -832 WIRE 1168 -832 1168 -880 WIRE 864 -816 864 -960 WIRE 864 -816 816 -816 WIRE 944 -816 864 -816 WIRE 1072 -816 1072 -976 WIRE 1072 -816 1024 -816 WIRE 1136 -816 1072 -816 WIRE 752 -800 704 -800 WIRE 1280 -800 1280 -976 WIRE 1280 -800 1200 -800 WIRE -288 -784 -288 -832 WIRE 64 -784 64 -816 WIRE 1136 -784 1072 -784 WIRE 2208 -768 2208 -880 WIRE 2304 -768 2208 -768 WIRE 2576 -768 2576 -880 WIRE 1680 -752 1520 -752 WIRE 1792 -752 1744 -752 WIRE 1280 -736 1280 -800 WIRE 480 -720 480 -832 WIRE 784 -720 784 -784 WIRE 2208 -720 2208 -768 WIRE 2208 -720 2032 -720 WIRE 2304 -720 2304 -768 WIRE 1168 -704 1168 -768 WIRE -48 -688 -48 -832 WIRE 48 -688 -48 -688 WIRE 208 -688 208 -848 WIRE 208 -688 128 -688 WIRE -288 -672 -288 -704 WIRE 1744 -656 1712 -656 WIRE 1760 -656 1744 -656 WIRE 2032 -656 2032 -720 WIRE 2576 -656 2576 -688 WIRE 480 -608 480 -640 WIRE 704 -608 704 -800 WIRE 704 -608 480 -608 WIRE 1712 -608 1712 -656 WIRE 2304 -608 2304 -640 WIRE 1520 -592 1520 -752 WIRE 1680 -592 1520 -592 WIRE 480 -576 480 -608 WIRE 1792 -576 1792 -752 WIRE 1792 -576 1744 -576 WIRE 1840 -576 1792 -576 WIRE 1984 -576 1920 -576 WIRE 1280 -560 1280 -656 WIRE 1680 -560 1280 -560 WIRE 1520 -528 1520 -592 WIRE 2304 -496 2304 -544 WIRE 1712 -480 1712 -544 WIRE 480 -464 480 -496 WIRE 1520 -400 1520 -448 WIRE 2032 -400 2032 -560 WIRE 2032 -400 1520 -400 WIRE 2032 -368 2032 -400 WIRE 2032 -256 2032 -288 WIRE 1680 -192 1520 -192 WIRE 1792 -192 1744 -192 WIRE 1744 -96 1712 -96 WIRE 1760 -96 1744 -96 WIRE 2208 -96 2208 -720 WIRE -48 -80 -96 -80 WIRE 0 -80 -48 -80 WIRE 336 -80 272 -80 WIRE 416 -80 336 -80 WIRE 1712 -48 1712 -96 WIRE -96 -32 -96 -80 WIRE 1520 -32 1520 -192 WIRE 1680 -32 1520 -32 WIRE 1792 -16 1792 -192 WIRE 1792 -16 1744 -16 WIRE 1840 -16 1792 -16 WIRE 2160 -16 1920 -16 WIRE 416 0 416 -80 WIRE 1280 0 1280 -560 WIRE 1680 0 1280 0 WIRE 1520 32 1520 -32 WIRE 272 64 272 -80 WIRE -96 80 -96 48 WIRE 1712 80 1712 16 WIRE 416 112 416 80 WIRE 1072 112 1072 -784 WIRE 1072 112 416 112 WIRE 1280 128 1280 0 WIRE 416 144 416 112 WIRE 1520 144 1520 112 WIRE 2208 144 2208 0 WIRE 2208 144 1520 144 WIRE 2208 176 2208 144 WIRE 272 256 272 144 WIRE 416 256 416 224 WIRE 1280 256 1280 208 WIRE 2208 288 2208 256 FLAG -96 80 0 FLAG -48 -80 P9V FLAG 1744 -96 P9V FLAG 2208 288 0 FLAG 2576 -656 0 FLAG 816 -896 P9V FLAG 416 256 0 FLAG 272 256 0 FLAG 96 -928 P9V FLAG -288 -672 0 FLAG -160 -880 0 FLAG 480 -464 0 FLAG 336 -80 Vref FLAG 576 -1008 Vref FLAG 1744 -656 P9V FLAG 2032 -256 0 FLAG 2304 -496 0 FLAG 64 -784 0 FLAG -256 -1040 P9V FLAG 1712 -480 0 FLAG 1712 80 0 FLAG 1280 256 0 FLAG 1200 -880 P9V FLAG 1168 -704 0 FLAG 784 -720 0 SYMBOL Opamps\\LT1013 1712 -80 R0 SYMATTR InstName U1 SYMBOL voltage -96 -48 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 9 SYMBOL res 1936 -32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 100 SYMBOL nmos 2160 -96 R0 SYMATTR InstName M1 SYMATTR Value IRF530 SYMBOL res 2192 160 R0 SYMATTR InstName R2 SYMATTR Value 0.1 SYMBOL cap 1744 -208 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 220p SYMBOL res 1504 16 R0 SYMATTR InstName R4 SYMATTR Value 3300 SYMBOL res 2368 -896 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 0.1 SYMBOL voltage 2576 -784 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 12 SYMBOL Opamps\\LT1013 784 -880 R0 SYMATTR InstName U3 SYMBOL res 400 -16 R0 SYMATTR InstName R11 SYMATTR Value {Rtop} SYMBOL res 400 128 R0 SYMATTR InstName R12 SYMATTR Value {Rbot} SYMBOL voltage 272 48 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value 2.5 SYMBOL Opamps\\LT1013 64 -912 R0 SYMATTR InstName U4 SYMBOL res -304 -800 R0 SYMATTR InstName R13 SYMATTR Value 15k SYMBOL res 144 -704 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 33K SYMBOL cap -176 -976 R0 SYMATTR InstName C2 SYMATTR Value 0.1u SYMBOL res 160 -1040 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R15 SYMATTR Value 15K SYMBOL res 464 -736 R0 SYMATTR InstName R16 SYMATTR Value {Rtop2} SYMBOL res 464 -592 R0 SYMATTR InstName R17 SYMATTR Value {Rbot2} SYMBOL pnp 416 -832 M180 SYMATTR InstName Q1 SYMATTR Value 2N3906 SYMBOL res 368 -896 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R19 SYMATTR Value 10K SYMBOL Opamps\\LT1013 1712 -640 R0 SYMATTR InstName U5 SYMBOL res 1936 -592 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R20 SYMATTR Value 100 SYMBOL nmos 1984 -656 R0 SYMATTR InstName M2 SYMATTR Value IRF530 SYMBOL res 2016 -384 R0 SYMATTR InstName R21 SYMATTR Value 0.1 SYMBOL cap 1744 -768 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 220p SYMBOL res 1504 -544 R0 SYMATTR InstName R23 SYMATTR Value 3300 SYMBOL cap 2288 -608 R0 SYMATTR InstName C4 SYMATTR Value 2.2u SYMBOL res 2288 -736 R0 SYMATTR InstName R9 SYMATTR Value 2.2 SYMBOL ind 2512 -896 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L1 SYMATTR Value 3.3u SYMBOL res -304 -992 R0 SYMATTR InstName R25 SYMATTR Value 15k SYMBOL res 1264 112 R0 SYMATTR InstName R3 SYMATTR Value 2K SYMBOL res 1264 -752 R0 SYMATTR InstName R7 SYMATTR Value 18K SYMBOL Opamps\\LT1013 1168 -864 R0 SYMATTR InstName U2 SYMBOL res 1040 -832 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 10K SYMBOL res 1248 -992 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R18 SYMATTR Value 10K TEXT -96 272 Left 2 !.tran 10M startup TEXT 648 312 Left 2 !.param POT_position=0.999 TEXT 648 344 Left 2 !.param Rbot=POT_position*10000 TEXT 648 376 Left 2 !.param Rtop=10000-Rbot TEXT 656 176 Left 2 ;10K Potentiometer\n============= TEXT 656 232 Left 2 ;Set POT_position from 0 - 1 TEXT 656 -120 Left 2 !.param POT_position2=0.999 TEXT 656 -88 Left 2 !.param Rbot2=POT_position2*10000 TEXT 656 -56 Left 2 !.param Rtop2=10000-Rbot2 TEXT 664 -256 Left 2 ;10K Potentiometer\n============= TEXT 664 -200 Left 2 ;Set POT_position from 0 - 1 TEXT -112 -600 Left 2 ;500Hz Oscillator TEXT 2256 -968 Left 2 ;TEST LEADS TEXT 112 -792 Left 2 ;(TL074) TEXT 880 -784 Left 2 ;(TL074) TEXT 1768 -520 Left 2 ;(TL074) TEXT 1760 40 Left 2 ;(TL074) TEXT 2048 -552 Left 2 ;(IRFZ20) TEXT 2216 72 Left 2 ;(IRFZ20) TEXT 688 -1152 Left 5 ;DYNAMIC LOAD - SINGLE SUPPLY TEXT 120 152 Left 2 ;LT6656-2.5 TEXT 1448 304 Left 4 ;OUTPUT STAGE RECTANGLE Normal 2560 -816 2240 -992 2 RECTANGLE Normal 2304 336 1408 -240 2 RECTANGLE Normal 608 -432 432 -768 2 RECTANGLE Normal 528 288 368 -32 2