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-rw-r--r--potentiosynth/driver-pcb/active-feedback.sch-bak414
1 files changed, 414 insertions, 0 deletions
diff --git a/potentiosynth/driver-pcb/active-feedback.sch-bak b/potentiosynth/driver-pcb/active-feedback.sch-bak
new file mode 100644
index 0000000..97626ba
--- /dev/null
+++ b/potentiosynth/driver-pcb/active-feedback.sch-bak
@@ -0,0 +1,414 @@
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr USLetter 11000 8500
+encoding utf-8
+Sheet 9 9
+Title "galvanosynth"
+Date "2020-01-30"
+Rev "4.0.0"
+Comp "University of Wisconsin-Madison"
+Comment1 "Instrument Shop"
+Comment2 "Department of Chemistry"
+Comment3 "Blaise Thompson"
+Comment4 "bthompson@chem.wisc.edu"
+$EndDescr
+Text HLabel 2500 3500 0 50 Input ~ 0
+CONTROL
+Text HLabel 6850 2900 2 50 Output ~ 0
+ERROR
+Text HLabel 6850 4300 2 50 Output ~ 0
+SUPPLY
+Text HLabel 6850 4400 2 50 Input ~ 0
+RETURN
+$Comp
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+AR Path="/5E5D6B6F" Ref="#PWR?" Part="1"
+AR Path="/5E39B760/5E5D6B6F" Ref="#PWR0111" Part="1"
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+AR Path="/5E4039E6/5E5D6B6F" Ref="#PWR0124" Part="1"
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+AR Path="/5E3ED540/5E5D6B6F" Ref="#PWR0154" Part="1"
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+F 3 "" H 5400 3100 50 0001 C CNN
+ 1 5400 3100
+ 1 0 0 -1
+$EndComp
+$Comp
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+F 1 "GND" H 5405 3927 50 0000 C CNN
+F 2 "" H 5400 4100 50 0001 C CNN
+F 3 "" H 5400 4100 50 0001 C CNN
+ 1 5400 4100
+ 1 0 0 -1
+$EndComp
+$Comp
+L power:GND #PWR?
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+AR Path="/5E5D6B82" Ref="#PWR?" Part="1"
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+F 1 "GND" H 5105 4977 50 0000 C CNN
+F 2 "" H 5100 5150 50 0001 C CNN
+F 3 "" H 5100 5150 50 0001 C CNN
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+ 1 0 0 -1
+$EndComp
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+L IRF630:IRF630 QD?
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+F 3 "" H 6550 3950 50 0001 C CNN
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+F 3 "https://www.fairchildsemi.com/datasheets/2N/2N7000.pdf" H 5800 3100 50 0001 L CNN
+ 1 5800 3100
+ 1 0 0 -1
+$EndComp
+Wire Wire Line
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+$Comp
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+P 5100 4600
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+AR Path="/5E39B760/5E5D6BAB" Ref="RV1" Part="1"
+AR Path="/5E3EAB60/5E5D6BAB" Ref="RV2" Part="1"
+AR Path="/5E4039E6/5E5D6BAB" Ref="RV6" Part="1"
+AR Path="/5E4039EC/5E5D6BAB" Ref="RV7" Part="1"
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+$EndComp
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+Connection ~ 5100 4400
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+Wire Wire Line
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+$Comp
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+F 3 "" H 5900 3300 50 0001 C CNN
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+ 1 0 0 -1
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+Connection ~ 4950 3500
+Wire Wire Line
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+Wire Wire Line
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+$Comp
+L Device:R_US R-?
+U 1 1 5E5D6BC6
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+AR Path="/5E5D6BC6" Ref="R-?" Part="1"
+AR Path="/5E39B760/5E5D6BC6" Ref="R-1" Part="1"
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+AR Path="/5E3ED540/5E5D6BC6" Ref="R-4" Part="1"
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+F 3 "~" H 4150 3500 50 0001 C CNN
+ 1 4150 3500
+ 0 1 -1 0
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+Wire Wire Line
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+Wire Wire Line
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+$Comp
+L power:GND #PWR?
+U 1 1 5E66C0EF
+P 4500 3300
+AR Path="/5E66C0EF" Ref="#PWR?" Part="1"
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+F 2 "" H 4500 3300 50 0001 C CNN
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+AR Path="/5E3ED540/5E5D6B7B" Ref="U4" Part="1"
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+F 3 "" H 5000 3600 60 0000 C CNN
+ 1 5000 3600
+ 1 0 0 -1
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+Wire Wire Line
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+Wire Wire Line
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+Text Notes 6300 5250 0 50 ~ 0
+CONSTANT CURRENT DRIVER\nI = V_CONTROL / RV
+Wire Notes Line
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+Wire Notes Line
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+$Comp
+L Device:R_US R+?
+U 1 1 5E5D6BCC
+P 4150 3000
+AR Path="/5E5D6BCC" Ref="R+?" Part="1"
+AR Path="/5E39B760/5E5D6BCC" Ref="R+1" Part="1"
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+Text Notes 6300 2800 0 50 ~ 0
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+Wire Wire Line
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+ 0 -1 1 0
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+Wire Wire Line
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+Connection ~ 4500 3000
+$Comp
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+P 4500 3150
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+AR Path="/5E39B760/5E66B3AD" Ref="RG1" Part="1"
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+ 4500 5500 7500 5500
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+F 2 "Resistor_SMD:R_1206_3216Metric" V 5140 4990 50 0001 C CNN
+F 3 "~" H 5100 5000 50 0001 C CNN
+ 1 5100 5000
+ 1 0 0 1
+$EndComp
+$EndSCHEMATC
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 11:29:57 +0000