Version 4
SHEET 1 1524 680
WIRE 64 -224 64 -240
WIRE 176 -224 176 -240
WIRE 464 -160 464 -192
WIRE 464 -160 272 -160
WIRE 816 -160 464 -160
WIRE 272 -144 272 -160
WIRE 816 -144 816 -160
WIRE 64 -128 64 -144
WIRE 176 -128 176 -144
WIRE 576 -112 416 -112
WIRE 656 -112 576 -112
WIRE 752 -112 736 -112
WIRE 576 -80 576 -112
WIRE 752 -48 752 -112
WIRE 816 -48 816 -64
WIRE 816 -48 752 -48
WIRE 992 -48 816 -48
WIRE 464 -32 464 -160
WIRE 944 -32 752 -32
WIRE -208 -16 -224 -16
WIRE -112 -16 -128 -16
WIRE 416 -16 416 -112
WIRE 432 -16 416 -16
WIRE 816 -16 816 -48
WIRE 992 -16 992 -48
WIRE -64 0 -64 -16
WIRE -48 0 -64 0
WIRE 48 0 32 0
WIRE 96 0 80 0
WIRE 192 0 176 0
WIRE 576 0 576 -16
WIRE 576 0 496 0
WIRE 656 0 576 0
WIRE 752 0 752 -32
WIRE 752 0 736 0
WIRE 768 0 752 0
WIRE 944 0 944 -32
WIRE 272 16 272 -64
WIRE 432 16 272 16
WIRE -352 48 -512 48
WIRE -256 48 -272 48
WIRE 320 48 224 48
WIRE 272 64 272 16
WIRE -256 80 -256 48
WIRE -224 80 -224 -16
WIRE -224 80 -256 80
WIRE -208 80 -224 80
WIRE 224 80 224 48
WIRE 240 80 224 80
WIRE -112 96 -112 -16
WIRE -112 96 -144 96
WIRE -48 96 -112 96
WIRE 48 96 48 0
WIRE 48 96 32 96
WIRE 80 96 80 0
WIRE 80 96 48 96
WIRE 96 96 80 96
WIRE 320 96 320 48
WIRE 320 96 304 96
WIRE 368 96 320 96
WIRE 464 96 464 32
WIRE 464 96 448 96
WIRE 512 96 464 96
WIRE 816 96 816 80
WIRE 992 96 992 80
WIRE 992 96 816 96
WIRE 1168 96 992 96
WIRE -240 112 -256 112
WIRE -208 112 -240 112
WIRE 192 112 192 0
WIRE 192 112 160 112
WIRE 240 112 192 112
WIRE 512 112 512 96
WIRE 816 112 816 96
WIRE 992 112 992 96
WIRE -352 128 -464 128
WIRE -256 128 -256 112
WIRE -256 128 -272 128
WIRE 96 128 80 128
WIRE -240 144 -240 112
WIRE 1168 144 1168 96
WIRE -464 160 -464 128
WIRE 80 160 80 128
WIRE 464 160 464 96
WIRE 432 176 416 176
WIRE 576 192 496 192
WIRE 656 192 576 192
WIRE 752 192 736 192
WIRE 768 192 752 192
WIRE 272 208 272 128
WIRE 432 208 272 208
WIRE 576 208 576 192
WIRE 752 224 752 192
WIRE 944 224 944 192
WIRE 944 224 752 224
WIRE -512 240 -512 48
WIRE -464 240 -512 240
WIRE 816 240 816 208
WIRE 816 240 752 240
WIRE 992 240 992 208
WIRE 992 240 816 240
WIRE 1168 240 1168 224
WIRE -464 256 -464 240
WIRE -240 256 -240 224
WIRE 272 256 272 208
WIRE 816 256 816 240
WIRE 416 304 416 176
WIRE 576 304 576 272
WIRE 576 304 416 304
WIRE 656 304 576 304
WIRE 752 304 752 240
WIRE 752 304 736 304
WIRE 272 352 272 336
WIRE 464 352 464 224
WIRE 464 352 272 352
WIRE 816 352 816 336
WIRE 816 352 464 352
WIRE 464 384 464 352
FLAG 512 112 0
FLAG 176 -240 -V
FLAG 176 -128 0
FLAG 64 -128 0
FLAG 64 -240 +V
FLAG 464 -192 +V
FLAG 464 384 -V
FLAG -464 256 0
FLAG -176 64 +V
FLAG -176 128 -V
FLAG -240 256 0
FLAG 80 160 0
FLAG 128 80 +V
FLAG 128 144 -V
FLAG -64 -16 -V
FLAG 1168 240 0
SYMBOL res 464 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 256 -160 R0
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res 256 240 R0
SYMATTR InstName R100
SYMATTR Value 100
SYMBOL Opamps\\LT1632 464 -64 R0
SYMATTR InstName U2
SYMBOL Opamps\\LT1632 464 128 R0
SYMATTR InstName U3
SYMBOL res 800 240 R0
SYMATTR InstName R4
SYMATTR Value 0.1
SYMBOL res 800 -160 R0
SYMATTR InstName R5
SYMATTR Value 0.1
SYMBOL nmos 768 112 R0
SYMATTR InstName M2
SYMATTR Value IRF1405
SYMBOL voltage 64 -240 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value +15
SYMBOL voltage 176 -240 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value -15
SYMBOL pmos 768 80 M180
SYMATTR InstName M1
SYMATTR Value IRF7204
SYMBOL Opamps\\LT1413 272 32 R0
SYMATTR InstName U1
SYMBOL res 640 -96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res 752 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 22
SYMBOL res 752 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL res 640 208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R9
SYMATTR Value 22
SYMBOL cap 560 -80 R0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL cap 560 208 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL voltage -464 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value SINE(2.5 2.5 10)
SYMBOL Opamps\\LT1354 -176 32 R0
WINDOW 3 20 94 Left 2
SYMATTR InstName U6
SYMBOL res -112 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R18
SYMATTR Value 1k
SYMBOL res -256 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 500
SYMBOL res -256 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R20
SYMATTR Value 500
SYMBOL res -224 240 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R21
SYMATTR Value 1k
SYMBOL Opamps\\LT1354 128 48 R0
WINDOW 3 20 94 Left 2
SYMATTR InstName U4
SYMBOL res 192 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL res 48 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 1k
SYMBOL res 48 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 3k
SYMBOL res 1152 128 R0
SYMATTR InstName R_PeltierElement1
SYMATTR Value 2.73
TEXT 8 -56 Left 2 !.tran 0 2 0
TEXT 272 -272 Left 2 ;Bipolar FET constant current source\nin: -5 ... +5V\nout: -5 ... +5A\nf: 0 ... 10kHz
TEXT 824 72 Left 2 ;/ IRF 4905
TEXT -48 208 Left 2 ;summing amplifier
TEXT -496 -24 Left 2 ;differential amplifier