I_AMP.sch 24.6 KB
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EESchema Schematic File Version 2
LIBS:74xgxx
LIBS:74xx
LIBS:ac-dc
LIBS:actel
LIBS:adc-dac
LIBS:Altera
LIBS:analog_devices
LIBS:analog_switches
LIBS:atmel
LIBS:audio
LIBS:brooktre
LIBS:cmos4000
LIBS:cmos_ieee
LIBS:conn
LIBS:contrib
LIBS:cypress
LIBS:dc-dc
LIBS:device
LIBS:digital-audio
LIBS:diode
LIBS:display
LIBS:dsp
LIBS:elec-unifil
LIBS:ESD_Protection
LIBS:ftdi
LIBS:gennum
LIBS:graphic
LIBS:hc11
LIBS:intel
LIBS:interface
LIBS:ir
LIBS:Lattice
LIBS:linear
LIBS:logo
LIBS:maxim
LIBS:memory
LIBS:microchip
LIBS:microchip_dspic33dsc
LIBS:microchip_pic10mcu
LIBS:microchip_pic12mcu
LIBS:microchip_pic16mcu
LIBS:microchip_pic18mcu
LIBS:microchip_pic32mcu
LIBS:microcontrollers
LIBS:motor_drivers
LIBS:motorola
LIBS:msp430
LIBS:nordicsemi
LIBS:nxp_armmcu
LIBS:onsemi
LIBS:opto
LIBS:Oscillators
LIBS:philips
LIBS:power
LIBS:powerint
LIBS:Power_Management
LIBS:references
LIBS:regul
LIBS:relays
LIBS:rfcom
LIBS:sensors
LIBS:silabs
LIBS:siliconi
LIBS:stm8
LIBS:stm32
LIBS:supertex
LIBS:switches
LIBS:texas
LIBS:transf
LIBS:transistors
LIBS:ttl_ieee
LIBS:valves
LIBS:video
LIBS:w_analog
LIBS:w_connectors
LIBS:w_device
LIBS:w_logic
LIBS:w_memory
LIBS:w_microcontrollers
LIBS:w_opto
LIBS:Worldsemi
LIBS:w_relay
LIBS:w_rtx
LIBS:w_transistor
LIBS:w_vacuum
LIBS:Xicor
LIBS:xilinx
LIBS:Zilog
LIBS:I_AMP-cache
EELAYER 25 0
EELAYER END
93
$Descr User 8908 6299
94 95
encoding utf-8
Sheet 1 1
96
Title "Current Sensor for Materials Analysis"
97
Date "2017-12-15"
98 99
Rev "1"
Comp "LAPMA - UFRGS"
100 101 102 103
Comment1 "All resistors are 1/8W, except R1 and R2"
Comment2 "There's a saturation indicator for output higher than 5V"
Comment3 "The gain adjust must be set for a range in 0 to 5V output voltage"
Comment4 "Designed by Alisson Claudino"
104 105
$EndDescr
$Comp
106
L GND #PWR01
107
U 1 1 5A26D72D
108 109 110 111 112 113
P 1750 1950
F 0 "#PWR01" H 1750 1700 50  0001 C CNN
F 1 "GND" H 1750 1800 50  0000 C CNN
F 2 "" H 1750 1950 50  0000 C CNN
F 3 "" H 1750 1950 50  0000 C CNN
	1    1750 1950
114 115
	1    0    0    -1  
$EndComp
116
Text Notes 1550 1650 0    60   ~ 0
117
5W
118
Text Notes 1850 1650 0    60   ~ 0
119
5W
120 121
NoConn ~ 4150 3950
NoConn ~ 4150 3350
122 123 124
$Comp
L R R1
U 1 1 5A270FC5
125 126 127 128 129 130
P 1750 1700
F 0 "R1" V 1830 1700 50  0000 C CNN
F 1 "2R2" V 1750 1700 50  0000 C CNN
F 2 "" V 1680 1700 50  0000 C CNN
F 3 "" H 1750 1700 50  0000 C CNN
	1    1750 1700
131 132 133 134 135
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 5A270FC6
136 137 138 139 140 141
P 2050 1700
F 0 "R2" V 2130 1700 50  0000 C CNN
F 1 "2R2" V 2050 1700 50  0000 C CNN
F 2 "" V 1980 1700 50  0000 C CNN
F 3 "" H 2050 1700 50  0000 C CNN
	1    2050 1700
142 143 144
	1    0    0    -1  
$EndComp
$Comp
145
L R R5
146
U 1 1 5A270FC7
147 148 149 150 151 152
P 1600 3450
F 0 "R5" V 1680 3450 50  0000 C CNN
F 1 "20k" V 1600 3450 50  0000 C CNN
F 2 "" V 1530 3450 50  0000 C CNN
F 3 "" H 1600 3450 50  0000 C CNN
	1    1600 3450
153 154 155
	0    1    1    0   
$EndComp
$Comp
156
L GND #PWR02
157
U 1 1 5A270FC9
158 159 160 161 162 163
P 1750 1950
F 0 "#PWR02" H 1750 1700 50  0001 C CNN
F 1 "GND" H 1750 1800 50  0000 C CNN
F 2 "" H 1750 1950 50  0000 C CNN
F 3 "" H 1750 1950 50  0000 C CNN
	1    1750 1950
164 165 166 167 168
	1    0    0    -1  
$EndComp
$Comp
L D_Small D1
U 1 1 5A270FCC
169 170 171 172 173 174
P 2200 2800
F 0 "D1" H 2150 2880 50  0000 L CNN
F 1 "1n4148" H 2050 2720 50  0000 L CNN
F 2 "" V 2200 2800 50  0000 C CNN
F 3 "" V 2200 2800 50  0000 C CNN
	1    2200 2800
175 176 177
	1    0    0    -1  
$EndComp
$Comp
178
L R R6
179
U 1 1 5A270FCD
180 181 182 183 184 185
P 2200 2600
F 0 "R6" V 2280 2600 50  0000 C CNN
F 1 "20k" V 2200 2600 50  0000 C CNN
F 2 "" V 2130 2600 50  0000 C CNN
F 3 "" H 2200 2600 50  0000 C CNN
	1    2200 2600
186 187 188
	0    1    -1   0   
$EndComp
$Comp
189
L GND #PWR03
190
U 1 1 5A270FCE
191 192 193 194 195 196
P 1800 3700
F 0 "#PWR03" H 1800 3450 50  0001 C CNN
F 1 "GND" H 1800 3550 50  0000 C CNN
F 2 "" H 1800 3700 50  0000 C CNN
F 3 "" H 1800 3700 50  0000 C CNN
	1    1800 3700
197 198
	1    0    0    -1  
$EndComp
199
Text Notes 1550 1650 0    60   ~ 0
200
5W
201
Text Notes 1850 1650 0    60   ~ 0
202
5W
203 204
NoConn ~ 4150 3950
NoConn ~ 4150 3350
205
$Comp
206
L R R14
207
U 1 1 5A270FD6
208 209 210 211 212 213
P 5400 1000
F 0 "R14" V 5480 1000 50  0000 C CNN
F 1 "10k" V 5400 1000 50  0000 C CNN
F 2 "" V 5330 1000 50  0000 C CNN
F 3 "" H 5400 1000 50  0000 C CNN
	1    5400 1000
214 215 216
	0    1    1    0   
$EndComp
$Comp
217
L C C8
218
U 1 1 5A270FD7
219 220 221 222 223 224
P 5600 1200
F 0 "C8" H 5625 1300 50  0000 L CNN
F 1 "220n" H 5400 1100 50  0000 L CNN
F 2 "" H 5638 1050 50  0000 C CNN
F 3 "" H 5600 1200 50  0000 C CNN
	1    5600 1200
225 226 227
	1    0    0    -1  
$EndComp
$Comp
228
L R R15
229
U 1 1 5A270FD8
230 231 232 233 234 235
P 5800 1200
F 0 "R15" V 5880 1200 50  0000 C CNN
F 1 "RX" V 5800 1200 50  0000 C CNN
F 2 "" V 5730 1200 50  0000 C CNN
F 3 "" H 5800 1200 50  0000 C CNN
	1    5800 1200
236 237 238
	1    0    0    -1  
$EndComp
$Comp
239
L GND #PWR04
240
U 1 1 5A270FD9
241 242 243 244 245 246
P 5700 1450
F 0 "#PWR04" H 5700 1200 50  0001 C CNN
F 1 "GND" H 5700 1300 50  0000 C CNN
F 2 "" H 5700 1450 50  0000 C CNN
F 3 "" H 5700 1450 50  0000 C CNN
	1    5700 1450
247 248 249
	1    0    0    -1  
$EndComp
$Comp
250
L +8V #PWR05
251
U 1 1 5A270FDB
252 253 254 255 256 257
P 6400 800
F 0 "#PWR05" H 6400 650 50  0001 C CNN
F 1 "+8V" H 6400 940 50  0000 C CNN
F 2 "" H 6400 800 50  0000 C CNN
F 3 "" H 6400 800 50  0000 C CNN
	1    6400 800 
258 259 260
	1    0    0    -1  
$EndComp
$Comp
261
L GND #PWR06
262
U 1 1 5A270FDD
263 264 265 266 267 268
P 3900 3800
F 0 "#PWR06" H 3900 3550 50  0001 C CNN
F 1 "GND" H 3900 3650 50  0000 C CNN
F 2 "" H 3900 3800 50  0000 C CNN
F 3 "" H 3900 3800 50  0000 C CNN
	1    3900 3800
269 270 271
	1    0    0    -1  
$EndComp
$Comp
272
L ZENERsmall D5
273
U 1 1 5A270FE1
274 275 276 277 278 279
P 7250 1250
F 0 "D5" H 7250 1350 50  0000 C CNN
F 1 "5V1" H 7250 1150 50  0000 C CNN
F 2 "" H 7250 1250 50  0000 C CNN
F 3 "" H 7250 1250 50  0000 C CNN
	1    7250 1250
280 281 282
	0    1    1    0   
$EndComp
$Comp
283
L OPA177 U3
284
U 1 1 5A270FDA
285 286 287 288 289 290
P 6500 1100
F 0 "U3" H 6500 900 50  0000 C CNN
F 1 "OPA277" H 6450 1100 50  0000 C CNN
F 2 "" H 6400 1000 50  0000 C CNN
F 3 "" H 6500 1100 50  0000 C CNN
	1    6500 1100
291 292 293
	1    0    0    -1  
$EndComp
$Comp
294
L CP C5
295
U 1 1 5A270FD3
296 297 298 299 300 301
P 3950 2900
F 0 "C5" V 4000 3000 50  0000 L CNN
F 1 "10u" V 3800 2850 50  0000 L CNN
F 2 "" H 3988 2750 50  0000 C CNN
F 3 "" H 3950 2900 50  0000 C CNN
	1    3950 2900
302 303 304
	0    1    1    0   
$EndComp
$Comp
305
L R R12
306
U 1 1 5A270FD4
307 308 309 310 311 312
P 3950 3100
F 0 "R12" V 4030 3100 50  0000 C CNN
F 1 "18k" V 3950 3100 50  0000 C CNN
F 2 "" V 3880 3100 50  0000 C CNN
F 3 "" H 3950 3100 50  0000 C CNN
	1    3950 3100
313 314 315 316 317
	0    1    1    0   
$EndComp
$Comp
L POT RV1
U 1 1 5A270FD5
318 319 320 321 322 323
P 4350 3100
F 0 "RV1" H 4350 3020 50  0000 C CNN
F 1 "5k" H 4350 3100 50  0000 C CNN
F 2 "" H 4350 3100 50  0000 C CNN
F 3 "" H 4350 3100 50  0000 C CNN
	1    4350 3100
324 325 326 327 328
	1    0    0    -1  
$EndComp
$Comp
L D_Small D2
U 1 1 5A270FCA
329 330 331 332 333 334
P 2650 3550
F 0 "D2" H 2600 3630 50  0000 L CNN
F 1 "1n4148" H 2500 3470 50  0000 L CNN
F 2 "" V 2650 3550 50  0000 C CNN
F 3 "" V 2650 3550 50  0000 C CNN
	1    2650 3550
335 336 337
	1    0    0    -1  
$EndComp
$Comp
338
L R R8
339
U 1 1 5A270FCB
340 341 342 343 344 345
P 3150 3550
F 0 "R8" V 3230 3550 50  0000 C CNN
F 1 "10k" V 3150 3550 50  0000 C CNN
F 2 "" V 3080 3550 50  0000 C CNN
F 3 "" H 3150 3550 50  0000 C CNN
	1    3150 3550
346 347 348
	0    1    1    0   
$EndComp
$Comp
349
L GND #PWR07
350
U 1 1 5A270FD1
351 352 353 354 355 356
P 2300 3200
F 0 "#PWR07" H 2300 2950 50  0001 C CNN
F 1 "GND" H 2300 3050 50  0000 C CNN
F 2 "" H 2300 3200 50  0000 C CNN
F 3 "" H 2300 3200 50  0000 C CNN
	1    2300 3200
357 358 359
	0    -1   -1   0   
$EndComp
$Comp
360
L -8V #PWR18
361
U 1 1 5A270FDC
362 363 364 365 366 367
P 6400 1400
F 0 "#PWR18" H 6400 1500 50  0001 C CNN
F 1 "-8V" H 6400 1550 50  0000 C CNN
F 2 "" H 6400 1400 50  0000 C CNN
F 3 "" H 6400 1400 50  0000 C CNN
	1    6400 1400
368 369 370
	1    0    0    1   
$EndComp
$Comp
371
L R R18
372
U 1 1 5A270FDE
373 374 375 376 377 378
P 6450 1750
F 0 "R18" V 6530 1750 50  0000 C CNN
F 1 "27k" V 6450 1750 50  0000 C CNN
F 2 "" V 6380 1750 50  0000 C CNN
F 3 "" H 6450 1750 50  0000 C CNN
	1    6450 1750
379 380 381
	0    1    1    0   
$EndComp
$Comp
382
L C C9
383
U 1 1 5A270FDF
384 385 386 387 388 389
P 6450 2050
F 0 "C9" H 6475 2150 50  0000 L CNN
F 1 "220n" V 6500 1800 50  0000 L CNN
F 2 "" H 6488 1900 50  0000 C CNN
F 3 "" H 6450 2050 50  0000 C CNN
	1    6450 2050
390 391 392
	0    1    1    0   
$EndComp
$Comp
393
L GND #PWR08
394
U 1 1 5A270FE2
395 396 397 398 399 400
P 7250 1450
F 0 "#PWR08" H 7250 1200 50  0001 C CNN
F 1 "GND" H 7250 1300 50  0000 C CNN
F 2 "" H 7250 1450 50  0000 C CNN
F 3 "" H 7250 1450 50  0000 C CNN
	1    7250 1450
401 402 403
	1    0    0    -1  
$EndComp
$Comp
404
L R R19
405
U 1 1 5A270FE0
406 407 408 409 410 411
P 7050 1100
F 0 "R19" V 6950 1100 50  0000 C CNN
F 1 "100" V 7050 1100 50  0000 C CNN
F 2 "" V 6980 1100 50  0000 C CNN
F 3 "" H 7050 1100 50  0000 C CNN
	1    7050 1100
412 413 414 415 416
	0    1    1    0   
$EndComp
$Comp
L TL062 U1
U 2 1 5A270FD2
417 418 419 420 421 422
P 4250 3650
F 0 "U1" H 4200 3650 50  0000 L CNN
F 1 "TL062" H 4200 3500 50  0000 L CNN
F 2 "" H 4250 3650 50  0000 C CNN
F 3 "" H 4250 3650 50  0000 C CNN
	2    4250 3650
423 424 425
	1    0    0    1   
$EndComp
$Comp
426
L C_Small C2
427
U 1 1 5A270FCF
428 429 430 431 432 433
P 2200 3200
F 0 "C2" V 2300 3300 50  0000 L CNN
F 1 "100n" V 2100 3150 50  0000 L CNN
F 2 "" H 2200 3200 50  0000 C CNN
F 3 "" H 2200 3200 50  0000 C CNN
	1    2200 3200
434 435 436
	0    1    1    0   
$EndComp
$Comp
437
L -8V #PWR5
438
U 1 1 5A270FD0
439 440 441 442 443 444
P 2050 3150
F 0 "#PWR5" H 2050 3250 50  0001 C CNN
F 1 "-8V" H 2050 3300 50  0000 C CNN
F 2 "" H 2050 3150 50  0000 C CNN
F 3 "" H 2050 3150 50  0000 C CNN
	1    2050 3150
445 446 447 448 449
	1    0    0    -1  
$EndComp
$Comp
L BNC P1
U 1 1 5A270FC4
450 451 452 453 454 455
P 1100 1500
F 0 "P1" H 1250 1400 50  0000 C CNN
F 1 "INPUT" H 1100 1650 50  0000 C CNN
F 2 "" H 1100 1500 50  0000 C CNN
F 3 "" H 1100 1500 50  0000 C CNN
	1    1100 1500
456 457 458
	-1   0    0    -1  
$EndComp
$Comp
459
L BNC P6
460
U 1 1 5A270FE3
461 462 463 464 465 466
P 7800 1100
F 0 "P6" H 7950 1000 50  0000 C CNN
F 1 "OUTPUT (0-5V)" H 7800 1250 50  0000 C CNN
F 2 "" H 7800 1100 50  0000 C CNN
F 3 "" H 7800 1100 50  0000 C CNN
	1    7800 1100
467 468 469
	1    0    0    -1  
$EndComp
$Comp
470
L GND #PWR09
471
U 1 1 5A2738F2
472 473 474 475 476 477
P 2300 3900
F 0 "#PWR09" H 2300 3650 50  0001 C CNN
F 1 "GND" H 2300 3750 50  0000 C CNN
F 2 "" H 2300 3900 50  0000 C CNN
F 3 "" H 2300 3900 50  0000 C CNN
	1    2300 3900
478 479 480
	0    -1   -1   0   
$EndComp
$Comp
481
L C_Small C3
482
U 1 1 5A2738F8
483 484 485 486 487 488
P 2200 3900
F 0 "C3" V 2300 4000 50  0000 L CNN
F 1 "100n" V 2100 3850 50  0000 L CNN
F 2 "" H 2200 3900 50  0000 C CNN
F 3 "" H 2200 3900 50  0000 C CNN
	1    2200 3900
489 490 491 492 493
	0    1    1    0   
$EndComp
$Comp
L TL062 U1
U 1 1 5A270FC8
494 495 496 497 498 499
P 2150 3550
F 0 "U1" H 2100 3550 50  0000 L CNN
F 1 "TL062" H 2200 3450 50  0000 L CNN
F 2 "" H 2150 3550 50  0000 C CNN
F 3 "" H 2150 3550 50  0000 C CNN
	1    2150 3550
500 501 502
	1    0    0    1   
$EndComp
$Comp
503
L +8V #PWR010
504
U 1 1 5A273BD0
505 506 507 508 509 510
P 2050 3950
F 0 "#PWR010" H 2050 3800 50  0001 C CNN
F 1 "+8V" H 2050 4090 50  0000 C CNN
F 2 "" H 2050 3950 50  0000 C CNN
F 3 "" H 2050 3950 50  0000 C CNN
	1    2050 3950
511 512 513
	-1   0    0    1   
$EndComp
$Comp
514
L LM393 U2
515
U 1 1 5A27494E
516 517 518 519 520 521
P 6600 3200
F 0 "U2" H 6650 3200 50  0000 C CNN
F 1 "LM393" H 6850 3050 50  0000 C CNN
F 2 "" H 6600 3200 50  0000 C CNN
F 3 "" H 6600 3200 50  0000 C CNN
	1    6600 3200
522 523 524
	1    0    0    1   
$EndComp
$Comp
525
L LM393 U2
526
U 2 1 5A27494F
527 528 529 530 531 532
P 2350 5100
F 0 "U2" H 2500 5250 50  0000 C CNN
F 1 "LM393" H 2600 4950 50  0000 C CNN
F 2 "" H 2350 5100 50  0000 C CNN
F 3 "" H 2350 5100 50  0000 C CNN
	2    2350 5100
533 534 535
	1    0    0    -1  
$EndComp
$Comp
536
L R R11
537
U 1 1 5A274950
538 539 540 541 542 543
P 6200 2900
F 0 "R11" V 6280 2900 50  0000 C CNN
F 1 "2k7" V 6200 2900 50  0000 C CNN
F 2 "" V 6130 2900 50  0000 C CNN
F 3 "" H 6200 2900 50  0000 C CNN
	1    6200 2900
544 545 546
	-1   0    0    1   
$EndComp
$Comp
547
L C_Small C6
548
U 1 1 5A274951
549 550 551 552 553 554
P 6650 2800
F 0 "C6" V 6750 2800 50  0000 L CNN
F 1 "100n" V 6550 2700 50  0000 L CNN
F 2 "" H 6650 2800 50  0000 C CNN
F 3 "" H 6650 2800 50  0000 C CNN
	1    6650 2800
555 556 557
	0    1    1    0   
$EndComp
$Comp
558
L GND #PWR011
559
U 1 1 5A274952
560 561 562 563 564 565
P 6750 2800
F 0 "#PWR011" H 6750 2550 50  0001 C CNN
F 1 "GND" H 6750 2650 50  0000 C CNN
F 2 "" H 6750 2800 50  0000 C CNN
F 3 "" H 6750 2800 50  0000 C CNN
	1    6750 2800
566 567 568
	0    -1   -1   0   
$EndComp
$Comp
569
L -8V #PWR19
570
U 1 1 5A274953
571 572 573 574 575 576
P 6500 2700
F 0 "#PWR19" H 6500 2800 50  0001 C CNN
F 1 "-8V" H 6500 2850 50  0000 C CNN
F 2 "" H 6500 2700 50  0000 C CNN
F 3 "" H 6500 2700 50  0000 C CNN
	1    6500 2700
577 578 579
	1    0    0    -1  
$EndComp
$Comp
580
L R R9
581
U 1 1 5A274956
582 583 584 585 586 587
P 5900 3100
F 0 "R9" V 5980 3100 50  0000 C CNN
F 1 "3k3" V 5900 3100 50  0000 C CNN
F 2 "" V 5830 3100 50  0000 C CNN
F 3 "" H 5900 3100 50  0000 C CNN
	1    5900 3100
588 589 590
	1    0    0    -1  
$EndComp
$Comp
591
L R R10
592
U 1 1 5A274957
593 594 595 596 597 598
P 5900 3500
F 0 "R10" V 5980 3500 50  0000 C CNN
F 1 "5k6" V 5900 3500 50  0000 C CNN
F 2 "" V 5830 3500 50  0000 C CNN
F 3 "" H 5900 3500 50  0000 C CNN
	1    5900 3500
599 600 601
	1    0    0    -1  
$EndComp
$Comp
602
L +8V #PWR012
603
U 1 1 5A274958
604 605 606 607 608 609
P 6500 3600
F 0 "#PWR012" H 6500 3450 50  0001 C CNN
F 1 "+8V" H 6500 3740 50  0000 C CNN
F 2 "" H 6500 3600 50  0000 C CNN
F 3 "" H 6500 3600 50  0000 C CNN
	1    6500 3600
610 611 612
	1    0    0    1   
$EndComp
$Comp
613
L C_Small C7
614
U 1 1 5A274959
615 616 617 618 619 620
P 6650 3550
F 0 "C7" V 6700 3600 50  0000 L CNN
F 1 "100n" V 6550 3500 50  0000 L CNN
F 2 "" H 6650 3550 50  0000 C CNN
F 3 "" H 6650 3550 50  0000 C CNN
	1    6650 3550
621 622 623
	0    1    -1   0   
$EndComp
$Comp
624
L GND #PWR013
625
U 1 1 5A27495A
626 627 628 629 630 631
P 6750 3550
F 0 "#PWR013" H 6750 3300 50  0001 C CNN
F 1 "GND" H 6750 3400 50  0000 C CNN
F 2 "" H 6750 3550 50  0000 C CNN
F 3 "" H 6750 3550 50  0000 C CNN
	1    6750 3550
632 633 634
	0    -1   1    0   
$EndComp
$Comp
635
L +8V #PWR014
636
U 1 1 5A27495B
637 638 639 640 641 642
P 5900 2950
F 0 "#PWR014" H 5900 2800 50  0001 C CNN
F 1 "+8V" H 5900 3090 50  0000 C CNN
F 2 "" H 5900 2950 50  0000 C CNN
F 3 "" H 5900 2950 50  0000 C CNN
	1    5900 2950
643 644 645
	-1   0    0    -1  
$EndComp
$Comp
646
L GND #PWR015
647
U 1 1 5A27495C
648 649 650 651 652 653
P 5900 3650
F 0 "#PWR015" H 5900 3400 50  0001 C CNN
F 1 "GND" H 5900 3500 50  0000 C CNN
F 2 "" H 5900 3650 50  0000 C CNN
F 3 "" H 5900 3650 50  0000 C CNN
	1    5900 3650
654 655 656
	-1   0    0    -1  
$EndComp
$Comp
657
L R R13
658
U 1 1 5A27495D
659 660 661 662 663 664
P 6350 3950
F 0 "R13" V 6430 3950 50  0000 C CNN
F 1 "27k" V 6350 3950 50  0000 C CNN
F 2 "" V 6280 3950 50  0000 C CNN
F 3 "" H 6350 3950 50  0000 C CNN
	1    6350 3950
665 666 667
	0    1    1    0   
$EndComp
$Comp
668
L D_Small D3
669
U 1 1 5A27495E
670 671 672 673 674 675
P 6700 3950
F 0 "D3" H 6650 4030 50  0000 L CNN
F 1 "1n4148" H 6550 3870 50  0000 L CNN
F 2 "" V 6700 3950 50  0000 C CNN
F 3 "" V 6700 3950 50  0000 C CNN
	1    6700 3950
676 677 678
	-1   0    0    -1  
$EndComp
$Comp
679
L LED D4
680
U 1 1 5A27495F
681 682 683 684 685 686
P 7550 3000
F 0 "D4" H 7550 2900 50  0000 C CNN
F 1 "SATURATION_LED" H 7550 3150 50  0000 C CNN
F 2 "" H 7550 3000 50  0000 C CNN
F 3 "" H 7550 3000 50  0000 C CNN
	1    7550 3000
687 688 689
	0    1    -1   0   
$EndComp
$Comp
690
L R R17
691
U 1 1 5A274960
692 693 694 695 696 697
P 7350 2750
F 0 "R17" V 7430 2750 50  0000 C CNN
F 1 "2k7" V 7350 2750 50  0000 C CNN
F 2 "" V 7280 2750 50  0000 C CNN
F 3 "" H 7350 2750 50  0000 C CNN
	1    7350 2750
698 699 700
	0    -1   -1   0   
$EndComp
$Comp
701
L +8V #PWR016
702
U 1 1 5A274961
703 704 705 706 707 708
P 7150 2700
F 0 "#PWR016" H 7150 2550 50  0001 C CNN
F 1 "+8V" H 7150 2840 50  0000 C CNN
F 2 "" H 7150 2700 50  0000 C CNN
F 3 "" H 7150 2700 50  0000 C CNN
	1    7150 2700
709 710 711
	-1   0    0    -1  
$EndComp
$Comp
712
L GND #PWR017
713
U 1 1 5A274962
714 715 716 717 718 719
P 1950 5250
F 0 "#PWR017" H 1950 5000 50  0001 C CNN
F 1 "GND" H 1950 5100 50  0000 C CNN
F 2 "" H 1950 5250 50  0000 C CNN
F 3 "" H 1950 5250 50  0000 C CNN
	1    1950 5250
720 721
	1    0    0    -1  
$EndComp
722 723 724
NoConn ~ 2250 4800
NoConn ~ 2250 5400
NoConn ~ 2650 5100
725
$Comp
726
L CONN_01X01 P2
727
U 1 1 5A274963
728 729 730 731 732 733
P 3050 1200
F 0 "P2" H 3050 1300 50  0000 C CNN
F 1 "+8" V 3150 1200 50  0000 C CNN
F 2 "" H 3050 1200 50  0000 C CNN
F 3 "" H 3050 1200 50  0000 C CNN
	1    3050 1200
734 735 736
	-1   0    0    -1  
$EndComp
$Comp
737
L CONN_01X01 P3
738
U 1 1 5A274964
739 740 741 742 743 744
P 3050 1500
F 0 "P3" H 3050 1600 50  0000 C CNN
F 1 "-8" V 3150 1500 50  0000 C CNN
F 2 "" H 3050 1500 50  0000 C CNN
F 3 "" H 3050 1500 50  0000 C CNN
	1    3050 1500
745 746 747
	-1   0    0    -1  
$EndComp
$Comp
748
L CONN_01X01 P4
749
U 1 1 5A274965
750 751 752 753 754 755
P 3050 1800
F 0 "P4" H 3050 1900 50  0000 C CNN
F 1 "GND" V 3150 1800 50  0000 C CNN
F 2 "" H 3050 1800 50  0000 C CNN
F 3 "" H 3050 1800 50  0000 C CNN
	1    3050 1800
756 757 758
	-1   0    0    -1  
$EndComp
$Comp
759
L R R3
760
U 1 1 5A274966
761 762 763 764 765 766
P 3400 1200
F 0 "R3" V 3480 1200 50  0000 C CNN
F 1 "10" V 3400 1200 50  0000 C CNN
F 2 "" V 3330 1200 50  0000 C CNN
F 3 "" H 3400 1200 50  0000 C CNN
	1    3400 1200
767 768 769
	0    1    1    0   
$EndComp
$Comp
770
L R R4
771
U 1 1 5A274967
772 773 774 775 776 777
P 3400 1500
F 0 "R4" V 3480 1500 50  0000 C CNN
F 1 "10" V 3400 1500 50  0000 C CNN
F 2 "" V 3330 1500 50  0000 C CNN
F 3 "" H 3400 1500 50  0000 C CNN
	1    3400 1500
778 779 780
	0    1    1    0   
$EndComp
$Comp
781
L CP_Small C1
782
U 1 1 5A274968
783 784 785 786 787 788
P 3700 1650
F 0 "C1" H 3710 1720 50  0000 L CNN
F 1 "22u" H 3710 1570 50  0000 L CNN
F 2 "" H 3700 1650 50  0000 C CNN
F 3 "" H 3700 1650 50  0000 C CNN
	1    3700 1650
789 790 791
	1    0    0    1   
$EndComp
$Comp
792
L CP_Small C4
793
U 1 1 5A274969
794 795 796 797 798 799
P 4300 1650
F 0 "C4" H 4310 1720 50  0000 L CNN
F 1 "22u" H 4310 1570 50  0000 L CNN
F 2 "" H 4300 1650 50  0000 C CNN
F 3 "" H 4300 1650 50  0000 C CNN
	1    4300 1650
800 801 802
	1    0    0    -1  
$EndComp
$Comp
803
L GND #PWR018
804
U 1 1 5A27496A
805 806 807 808 809 810
P 3700 1850
F 0 "#PWR018" H 3700 1600 50  0001 C CNN
F 1 "GND" H 3700 1700 50  0000 C CNN
F 2 "" H 3700 1850 50  0000 C CNN
F 3 "" H 3700 1850 50  0000 C CNN
	1    3700 1850
811 812 813
	1    0    0    -1  
$EndComp
$Comp
814
L +8V #PWR019
815
U 1 1 5A27496B
816 817 818 819 820 821
P 4300 1150
F 0 "#PWR019" H 4300 1000 50  0001 C CNN
F 1 "+8V" H 4300 1290 50  0000 C CNN
F 2 "" H 4300 1150 50  0000 C CNN
F 3 "" H 4300 1150 50  0000 C CNN
	1    4300 1150
822 823 824
	1    0    0    -1  
$EndComp
$Comp
825
L -8V #PWR9
826
U 1 1 5A27496C
827 828 829 830 831 832
P 3700 1450
F 0 "#PWR9" H 3700 1550 50  0001 C CNN
F 1 "-8V" H 3700 1600 50  0000 C CNN
F 2 "" H 3700 1450 50  0000 C CNN
F 3 "" H 3700 1450 50  0000 C CNN
	1    3700 1450
833 834 835
	1    0    0    -1  
$EndComp
$Comp
836
L PWR_FLAG #FLG020
837
U 1 1 5A27496D
838 839 840 841 842 843
P 3700 1100
F 0 "#FLG020" H 3700 1195 50  0001 C CNN
F 1 "PWR_FLAG" H 3700 1280 50  0000 C CNN
F 2 "" H 3700 1100 50  0000 C CNN
F 3 "" H 3700 1100 50  0000 C CNN
	1    3700 1100
844 845 846
	1    0    0    -1  
$EndComp
$Comp
847
L PWR_FLAG #FLG021
848
U 1 1 5A27496E
849 850 851 852 853 854
P 4000 1450
F 0 "#FLG021" H 4000 1545 50  0001 C CNN
F 1 "PWR_FLAG" H 4000 1630 50  0000 C CNN
F 2 "" H 4000 1450 50  0000 C CNN
F 3 "" H 4000 1450 50  0000 C CNN
	1    4000 1450
855 856 857
	1    0    0    -1  
$EndComp
$Comp
858
L PWR_FLAG #FLG022
859
U 1 1 5A27496F
860 861 862 863 864 865
P 4000 1850
F 0 "#FLG022" H 4000 1945 50  0001 C CNN
F 1 "PWR_FLAG" H 4000 2030 50  0000 C CNN
F 2 "" H 4000 1850 50  0000 C CNN
F 3 "" H 4000 1850 50  0000 C CNN
	1    4000 1850
866 867
	1    0    0    1   
$EndComp
868
Text Notes 3100 2250 0    60   ~ 0
869
POWER - Symmetric 8V\n
870
Text Notes 6350 4250 0    60   ~ 0
871
Saturation Indicator
872
Text Notes 1350 2300 0    60   ~ 0
873
I to V Converter\n
874
Wire Wire Line
875
	1250 1500 2200 1500
876
Wire Wire Line
877
	1250 3450 1450 3450
878
Wire Wire Line
879
	2050 1500 2050 1550
880
Wire Wire Line
881 882 883
	1750 1500 1750 1550
Connection ~ 2050 1500
Connection ~ 1750 1500
884
Wire Wire Line
885
	1100 1700 1100 1900
886
Wire Wire Line
887
	1100 1900 2050 1900
888
Wire Wire Line
889
	2050 1900 2050 1850
890
Wire Wire Line
891 892
	1750 1850 1750 1950
Connection ~ 1750 1900
893
Wire Wire Line
894
	1750 3450 1850 3450
895
Wire Wire Line
896
	2450 3550 2550 3550
897
Wire Wire Line
898
	2750 3550 3000 3550
899
Wire Wire Line
900
	2300 2800 2500 2800
901
Wire Wire Line
902 903
	2500 2800 2500 3550
Connection ~ 2500 3550
904
Wire Wire Line
905
	2100 2800 1800 2800
906
Wire Wire Line
907 908
	1800 2600 1800 3450
Connection ~ 1800 3450
909
Wire Wire Line
910
	3300 3550 3950 3550
911
Wire Wire Line
912
	3500 2900 3500 4200
913
Wire Wire Line
914 915
	1350 4200 1350 3450
Connection ~ 1350 3450
916
Wire Wire Line
917
	2350 2600 2800 2600
918
Wire Wire Line
919 920
	2800 2600 2800 3550
Connection ~ 2800 3550
921
Wire Wire Line
922 923
	2050 2600 1800 2600
Connection ~ 1800 2800
924
Wire Wire Line
925
	1800 3700 1800 3650
926
Wire Wire Line
927
	1800 3650 1850 3650
928
Wire Wire Line
929
	2050 3150 2050 3250
930
Wire Wire Line
931 932 933
	2050 3200 2100 3200
Connection ~ 2050 3200
Connection ~ 3500 3550
934
Wire Wire Line
935
	3500 2900 3800 2900
936
Wire Wire Line
937 938
	3800 3100 3500 3100
Connection ~ 3500 3100
939
Wire Wire Line
940
	4100 3100 4200 3100
941
Wire Wire Line
942
	4100 2900 4650 2900
943
Wire Wire Line
944
	4350 2900 4350 2950
945
Wire Wire Line
946
	4650 2900 4650 3650
947
Wire Wire Line
948 949
	4550 3650 4750 3650
Connection ~ 4350 2900
950
Wire Wire Line
951 952 953
	4500 3100 4650 3100
Connection ~ 4650 3100
Connection ~ 4650 3650
954
Wire Wire Line
955
	5550 1000 6200 1000
956
Wire Wire Line
957
	5600 1000 5600 1050
958
Wire Wire Line
959 960
	5800 1000 5800 1050
Connection ~ 5600 1000
961
Wire Wire Line
962
	5600 1350 5600 1400
963
Wire Wire Line
964
	5600 1400 5800 1400
965
Wire Wire Line
966
	5800 1400 5800 1350
967
Wire Wire Line
968 969 970
	5700 1450 5700 1400
Connection ~ 5700 1400
Connection ~ 5800 1000
971
Wire Wire Line
972
	3900 3800 3900 3750
973
Wire Wire Line
974
	3900 3750 3950 3750
975
Wire Wire Line
976
	6250 2050 6300 2050
977
Wire Wire Line
978
	6250 1750 6250 2050
979
Wire Wire Line
980
	6250 1750 6300 1750
981
Wire Wire Line
982
	6050 1900 6250 1900
983
Wire Wire Line
984
	6100 1200 6100 1900
985
Wire Wire Line
986 987
	6100 1200 6200 1200
Connection ~ 6250 1900
988
Wire Wire Line
989
	6600 1750 6650 1750
990
Wire Wire Line
991
	6650 1750 6650 2050
992
Wire Wire Line
993 994
	6650 2050 6600 2050
Connection ~ 6650 1900
995
Wire Wire Line
996
	7200 1100 7650 1100
997
Wire Wire Line
998 999
	7250 1100 7250 1150
Connection ~ 7250 1100
1000
Wire Wire Line
1001
	7250 1350 7250 1450
1002
Wire Wire Line
1003
	7250 1400 7800 1400
1004
Wire Wire Line
1005 1006
	7800 1400 7800 1300
Connection ~ 7250 1400
1007
Wire Wire Line
1008 1009
	2050 3900 2100 3900
Connection ~ 2050 3900
1010
Wire Wire Line
1011
	2050 3850 2050 3950
1012
Wire Wire Line
1013
	6200 3050 6200 3100
1014
Wire Wire Line
1015
	6200 3100 6300 3100
1016
Wire Wire Line
1017 1018
	6500 2800 6550 2800
Connection ~ 6500 2800
1019
Wire Wire Line
1020
	6500 2700 6500 2900
1021
Wire Wire Line
1022
	6200 2750 6200 2600
1023
Wire Wire Line
1024
	6550 3550 6500 3550
1025
Wire Wire Line
1026 1027
	6500 3500 6500 3600
Connection ~ 6500 3550
1028
Wire Wire Line
1029
	5900 3250 5900 3350
1030
Wire Wire Line
1031 1032
	5900 3300 6300 3300
Connection ~ 5900 3300
1033
Wire Wire Line
1034
	6800 3950 7000 3950
1035
Wire Wire Line
1036
	6500 3950 6600 3950
1037
Wire Wire Line
1038
	6200 3950 6150 3950
1039
Wire Wire Line
1040 1041
	6150 3950 6150 3300
Connection ~ 6150 3300
1042
Wire Wire Line
1043
	7550 2800 7550 2750
1044
Wire Wire Line
1045
	7550 2750 7500 2750
1046
Wire Wire Line
1047
	7150 2700 7150 2750
1048
Wire Wire Line
1049
	7150 2750 7200 2750
1050
Wire Wire Line
1051
	2050 5000 1950 5000
1052
Wire Wire Line
1053
	1950 5000 1950 5250
1054
Wire Wire Line
1055 1056
	1950 5200 2050 5200
Connection ~ 1950 5200
1057
Wire Wire Line
1058
	3700 1450 3700 1550
1059
Wire Wire Line
1060
	3550 1500 4000 1500
1061
Wire Wire Line
1062
	4300 1150 4300 1550
1063
Wire Wire Line
1064
	3550 1200 4300 1200
1065
Wire Wire Line
1066
	3700 1750 3700 1850
1067
Wire Wire Line
1068
	3250 1800 4300 1800
1069
Wire Wire Line
1070 1071 1072
	4300 1800 4300 1750
Connection ~ 3700 1800
Connection ~ 4300 1200
1073
Wire Wire Line
1074 1075
	3700 1100 3700 1200
Connection ~ 3700 1200
1076
Wire Wire Line
1077 1078
	4000 1500 4000 1450
Connection ~ 3700 1500
1079
Wire Wire Line
1080 1081
	4000 1850 4000 1800
Connection ~ 4000 1800
1082
Wire Notes Line
1083
	2800 2350 4500 2350
1084
Wire Notes Line
1085
	4500 2350 4500 800 
1086
Wire Notes Line
1087
	4500 800  2800 800 
1088
Wire Notes Line
1089
	2800 800  2800 2350
1090
Wire Notes Line
1091
	850  2400 5350 2400
1092
$Comp
1093
L R R16
1094
U 1 1 5A278213
1095 1096 1097 1098 1099 1100
P 5900 1900
F 0 "R16" V 5980 1900 50  0000 C CNN
F 1 "2k7" V 5900 1900 50  0000 C CNN
F 2 "" V 5830 1900 50  0000 C CNN
F 3 "" H 5900 1900 50  0000 C CNN
	1    5900 1900
1101 1102 1103 1104 1105
	0    1    1    0   
$EndComp
$Comp
L POT RV2
U 1 1 5A278290
1106 1107 1108 1109 1110 1111
P 5600 1900
F 0 "RV2" H 5600 1820 50  0000 C CNN
F 1 "50k" H 5600 1900 50  0000 C CNN
F 2 "" H 5600 1900 50  0000 C CNN
F 3 "" H 5600 1900 50  0000 C CNN
	1    5600 1900
1112 1113 1114
	1    0    0    -1  
$EndComp
Wire Wire Line
1115 1116
	5600 1750 5600 1700
Connection ~ 6100 1900
1117
$Comp
1118
L CONN_01X02 P5
1119
U 1 1 5A278F5F
1120 1121 1122 1123 1124 1125
P 5250 1600
F 0 "P5" H 5250 1750 50  0000 C CNN
F 1 "GAIN_ADJ." V 5350 1600 50  0000 C CNN
F 2 "" H 5250 1600 50  0000 C CNN
F 3 "" H 5250 1600 50  0000 C CNN
	1    5250 1600
1126 1127 1128
	0    1    -1   0   
$EndComp
$Comp
1129
L GND #PWR023
1130
U 1 1 5A279C98
1131 1132 1133 1134 1135 1136
P 5150 1900
F 0 "#PWR023" H 5150 1650 50  0001 C CNN
F 1 "GND" H 5150 1750 50  0000 C CNN
F 2 "" H 5150 1900 50  0000 C CNN
F 3 "" H 5150 1900 50  0000 C CNN
	1    5150 1900
1137 1138 1139
	0    1    1    0   
$EndComp
Wire Wire Line
1140
	5300 1800 5300 1900
1141
Wire Wire Line
1142
	5300 1900 5450 1900
1143
Wire Wire Line
1144
	5150 1900 5200 1900
1145
Wire Wire Line
1146 1147
	5200 1900 5200 1800
Text Notes 5950 2300 0    60   ~ 0
1148
1-10x Amplifier\n
1149 1150 1151
NoConn ~ 6800 900 
NoConn ~ 6800 1000
NoConn ~ 6800 1200
1152
Wire Wire Line
1153 1154
	6800 1100 6900 1100
Connection ~ 6850 1100
1155 1156 1157
$Comp
L R R7
U 1 1 5A2EF897
1158 1159 1160 1161 1162 1163
P 2450 4200
F 0 "R7" V 2530 4200 50  0000 C CNN
F 1 "20k" V 2450 4200 50  0000 C CNN
F 2 "" V 2380 4200 50  0000 C CNN
F 3 "" H 2450 4200 50  0000 C CNN
	1    2450 4200
1164 1165
	0    1    1    0   
$EndComp
1166
Wire Wire Line
1167
	2300 4200 1350 4200
1168
Wire Wire Line
1169
	3500 4200 2600 4200
1170
Wire Wire Line
1171
	5600 1700 5400 1700
1172
Wire Wire Line
1173 1174 1175
	5400 1700 5400 1900
Connection ~ 5400 1900
Connection ~ 7000 3200
1176
Wire Wire Line
1177
	7000 3950 7000 3200
1178
Wire Wire Line
1179
	6900 3200 7550 3200
1180
Wire Notes Line
1181
	5400 2400 8150 2400
1182
Wire Notes Line
1183 1184
	8150 2400 8150 4500
Text GLabel 2200 1500 2    60   Output ~ 0
1185
V1_I
1186
Text GLabel 1250 3450 0    60   Input ~ 0
1187 1188
V1_I
Wire Notes Line
1189
	850  2350 2550 2350
1190
Wire Notes Line
1191
	850  1250 2550 1250
1192
Wire Notes Line
1193 1194
	850  1250 850  2350
Text Notes 1750 4650 0    60   ~ 0
1195 1196
Full Wave Rectifier with Offset Null and Constant Time Adjust\n\n\n
Wire Notes Line
1197 1198
	850  4500 5350 4500
Text GLabel 4750 3650 2    60   Output ~ 0
1199 1200
I_RECTF
Wire Notes Line
1201 1202
	5350 4500 5350 2400
Text GLabel 5250 1000 0    60   Input ~ 0
1203 1204
I_RECTF
Wire Wire Line
1205
	6850 1900 6650 1900
1206
Wire Wire Line
1207 1208
	6850 800  6850 1900
Text GLabel 6950 800  2    60   Output ~ 0
1209
I_RECTF_AMP
1210
Wire Wire Line
1211 1212
	6850 800  6950 800 
Text GLabel 6100 2600 0    60   Input ~ 0
1213
I_RECTF_AMP
1214
Wire Wire Line
1215
	6200 2600 6100 2600
1216
Wire Notes Line
1217 1218
	5400 2400 5400 4500
Text Notes 5750 3350 0    60   ~ 0
1219 1220
5V
Wire Notes Line
1221
	8150 550  8150 2350
1222
Wire Notes Line
1223
	8150 2350 4750 2350
1224
Wire Notes Line
1225
	4750 2350 4750 550 
1226
Wire Notes Line
1227
	4750 550  8150 550 
1228
Wire Notes Line
1229
	850  4500 850  2400
1230
Wire Notes Line
1231
	5400 4500 8150 4500
1232
Wire Notes Line
1233
	2550 1250 2550 2350
1234
$EndSCHEMATC