From a065111b696906023befa9dcbc1dcfdd925b3b0d Mon Sep 17 00:00:00 2001
From: rekado <rekado@elephly.net>
Date: Wed, 21 Nov 2012 20:10:10 +0800
Subject: use this expensive voltage reference instead of a voltage divider

---
 gschem/preamps.sch | 99 +++++-------------------------------------------------
 1 file changed, 9 insertions(+), 90 deletions(-)

(limited to 'gschem/preamps.sch')

diff --git a/gschem/preamps.sch b/gschem/preamps.sch
index 9e8e98c..db97bde 100644
--- a/gschem/preamps.sch
+++ b/gschem/preamps.sch
@@ -1,17 +1,4 @@
 v 20110115 2
-C 42200 51000 1 0 1 capacitor-4.sym
-{
-T 42000 52100 5 10 0 0 0 6 1
-device=POLARIZED_CAPACITOR
-T 41900 51500 5 10 1 1 0 6 1
-refdes=C101
-T 42000 51700 5 10 0 0 0 6 1
-symversion=0.1
-T 41600 50700 5 10 1 1 0 0 1
-value=10u
-T 42200 51000 5 10 0 1 0 0 1
-footprint=RCY100P
-}
 C 44300 49800 1 90 0 capacitor-4.sym
 {
 T 43200 50000 5 10 0 0 90 0 1
@@ -25,28 +12,6 @@ value=3.3u
 T 44300 49800 5 10 0 1 0 0 1
 footprint=RCY100P
 }
-C 42600 51500 1 90 0 resistor-2.sym
-{
-T 42250 51900 5 10 0 0 90 0 1
-device=RESISTOR
-T 42300 52200 5 10 1 1 180 0 1
-refdes=R101
-T 42000 51900 5 10 1 1 0 0 1
-value=10k
-T 42600 51500 5 10 0 1 0 0 1
-footprint=R025
-}
-C 42600 50000 1 90 0 resistor-2.sym
-{
-T 42250 50400 5 10 0 0 90 0 1
-device=RESISTOR
-T 42300 50600 5 10 1 1 180 0 1
-refdes=R102
-T 42000 50300 5 10 1 1 0 0 1
-value=10k
-T 42600 50000 5 10 0 1 0 0 1
-footprint=R025
-}
 C 43700 51300 1 180 0 resistor-2.sym
 {
 T 43300 50950 5 10 0 0 180 0 1
@@ -58,11 +23,6 @@ value=5.1M
 T 43700 51300 5 10 0 1 0 0 1
 footprint=R025
 }
-N 42200 51200 42800 51200 4
-N 41300 51200 40900 51200 4
-N 40900 51200 40900 49800 4
-N 42500 50000 42500 49800 4
-N 42500 52400 42500 53100 4
 C 41600 48000 1 0 0 capacitor-1.sym
 {
 T 41800 48700 5 10 0 0 0 0 1
@@ -217,11 +177,8 @@ T 40200 48200 5 10 1 1 0 7 1
 value=BASS
 }
 N 41100 48200 41600 48200 4
-C 42300 53100 1 0 0 vcc-2.sym
 C 45400 53100 1 0 0 vcc-2.sym
 C 45400 50700 1 0 0 vcc-2.sym
-C 40600 49200 1 0 0 vcc-minus-1.sym
-C 42200 49200 1 0 0 vcc-minus-1.sym
 C 42700 46200 1 0 0 vcc-minus-1.sym
 C 43600 46200 1 0 0 vcc-minus-1.sym
 C 44500 46200 1 0 0 vcc-minus-1.sym
@@ -230,8 +187,6 @@ C 46200 46200 1 0 0 vcc-minus-1.sym
 C 47800 50700 1 0 0 vcc-minus-1.sym
 N 47900 51900 48100 51900 4
 N 48100 51900 48100 51300 4
-N 42500 51200 42500 51500 4
-N 42500 50900 42500 51200 4
 N 43000 46800 43000 46900 4
 N 44800 46800 44800 46900 4
 N 45600 46800 45600 46900 4
@@ -260,19 +215,6 @@ footprint=R025
 }
 T 48300 38500 9 16 1 0 0 0 1
 Preamps
-C 42200 43000 1 0 1 capacitor-4.sym
-{
-T 42000 44100 5 10 0 0 0 6 1
-device=POLARIZED_CAPACITOR
-T 41900 43500 5 10 1 1 0 6 1
-refdes=C201
-T 42000 43700 5 10 0 0 0 6 1
-symversion=0.1
-T 41600 42700 5 10 1 1 0 0 1
-value=10u
-T 42200 43000 5 10 0 1 0 0 1
-footprint=RCY100P
-}
 C 44300 41800 1 90 0 capacitor-4.sym
 {
 T 43200 42000 5 10 0 0 90 0 1
@@ -286,28 +228,6 @@ value=3.3u
 T 44300 41800 5 10 0 1 0 0 1
 footprint=RCY100P
 }
-C 42600 43500 1 90 0 resistor-2.sym
-{
-T 42250 43900 5 10 0 0 90 0 1
-device=RESISTOR
-T 42300 44200 5 10 1 1 180 0 1
-refdes=R201
-T 42000 43900 5 10 1 1 0 0 1
-value=10k
-T 42600 43500 5 10 0 1 0 0 1
-footprint=R025
-}
-C 42600 42000 1 90 0 resistor-2.sym
-{
-T 42250 42400 5 10 0 0 90 0 1
-device=RESISTOR
-T 42300 42600 5 10 1 1 180 0 1
-refdes=R202
-T 42000 42300 5 10 1 1 0 0 1
-value=10k
-T 42600 42000 5 10 0 1 0 0 1
-footprint=R025
-}
 C 43700 43300 1 180 0 resistor-2.sym
 {
 T 43300 42950 5 10 0 0 180 0 1
@@ -319,11 +239,6 @@ value=5.1M
 T 43700 43300 5 10 0 1 0 0 1
 footprint=R025
 }
-N 42200 43200 42800 43200 4
-N 41300 43200 40900 43200 4
-N 40900 43200 40900 41800 4
-N 42500 42000 42500 41800 4
-N 42500 44400 42500 45100 4
 C 41600 40000 1 0 0 capacitor-1.sym
 {
 T 41800 40700 5 10 0 0 0 0 1
@@ -478,11 +393,8 @@ T 40200 40200 5 10 1 1 0 7 1
 value=MELODY
 }
 N 41100 40200 41600 40200 4
-C 42300 45100 1 0 0 vcc-2.sym
 C 45400 45100 1 0 0 vcc-2.sym
 C 45400 42700 1 0 0 vcc-2.sym
-C 40600 41200 1 0 0 vcc-minus-1.sym
-C 42200 41200 1 0 0 vcc-minus-1.sym
 C 42700 38200 1 0 0 vcc-minus-1.sym
 C 43600 38200 1 0 0 vcc-minus-1.sym
 C 44500 38200 1 0 0 vcc-minus-1.sym
@@ -491,8 +403,6 @@ C 46200 38200 1 0 0 vcc-minus-1.sym
 C 47800 42700 1 0 0 vcc-minus-1.sym
 N 47900 43900 48100 43900 4
 N 48100 43900 48100 43300 4
-N 42500 43200 42500 43500 4
-N 42500 42900 42500 43200 4
 N 43000 38800 43000 38900 4
 N 44800 38800 44800 38900 4
 N 45600 38800 45600 38900 4
@@ -591,3 +501,12 @@ footprint=CONNECTOR 3 1
 N 37000 42000 36700 42000 4
 N 37300 44300 37300 41700 4
 N 37300 41700 36700 41700 4
+T 47400 46800 9 10 1 0 0 0 2
+TODO: replace R109 and R107
+with reference voltage (i.e. GND)?
+C 42200 50100 1 0 0 gnd-1.sym
+N 42800 51200 42300 51200 4
+N 42300 51200 42300 50400 4
+C 42000 42000 1 0 0 gnd-1.sym
+N 42800 43200 42100 43200 4
+N 42100 43200 42100 42300 4
-- 
cgit v1.2.3