From b57153ce47d4acbf8e028ff0fc201a4e21da5890 Mon Sep 17 00:00:00 2001
From: Bdale Garbee <bdale@gag.com>
Date: Thu, 29 Mar 2018 13:34:58 -0600
Subject: [PATCH] add a 0.1uF bypass cap on LDO input to make really sure we
 don't see RF there

---
 telefireeight.pcb | 13 +++++++-
 telefireeight.sch | 80 ++++++++++++++++++++++++++++-------------------
 2 files changed, 59 insertions(+), 34 deletions(-)

diff --git a/telefireeight.pcb b/telefireeight.pcb
index 7a9f3c3..655be5a 100644
--- a/telefireeight.pcb
+++ b/telefireeight.pcb
@@ -2831,7 +2831,7 @@ Element["hidename" "TO252FET" "Q6" "IRLR8743PbF" 2300.00mil 453.94mil -33.00mil
 
 	)
 
-Element["hidename" "CAP_FC8" "C7" "220uF" 1500.00mil 92.5548mm -50.00mil -27.00mil 3 70 ""]
+Element["hidename" "CAP_FC8" "C7" "220uF" 1487.00mil 92.5040mm -50.00mil -27.00mil 3 70 ""]
 (
 	Attribute("device" "CAPACITOR")
 	Attribute("manufacturer" "unknown")
@@ -3383,6 +3383,13 @@ Element["hidename" "8ufson2x2" "U5" "LM293" 4157.00mil 3750.00mil 0.0000 0.0000
 	ElementLine [-39.37mil -39.37mil 39.37mil -39.37mil 10.00mil]
 	ElementLine [-39.37mil -51.18mil -39.37mil -51.18mil 10.00mil]
 
+	)
+
+Element["hidename" "0402" "C15" "0.1uF" 42.5638mm 91.2556mm -31.50mil 31.50mil 1 100 ""]
+(
+	Pad[-3.93mil 15.74mil 3.93mil 15.74mil 19.68mil 20.00mil 25.68mil "1" "1" "square"]
+	Pad[-3.93mil -15.74mil 3.93mil -15.74mil 19.68mil 20.00mil 25.68mil "2" "2" "square"]
+
 	)
 Layer(1 "top" "copper")
 (
@@ -4202,6 +4209,8 @@ Layer(1 "top" "copper")
 	Line[2045.00mil 3724.00mil 2059.00mil 3738.00mil 10.00mil 12.00mil "clearline"]
 	Line[2059.00mil 3738.00mil 52.8198mm 3738.00mil 10.00mil 12.00mil "clearline"]
 	Line[52.8198mm 3738.00mil 2080.00mil 94.9574mm 10.00mil 12.00mil "clearline"]
+	Line[1725.00mil 3614.00mil 42.7040mm 3614.00mil 15.00mil 12.00mil "clearline"]
+	Line[42.7040mm 3614.00mil 42.5638mm 91.6554mm 15.00mil 12.00mil "clearline"]
 	Polygon("")
 	(
 		[2300.00mil 1600.00mil] [4550.00mil 1600.00mil] [4550.00mil 2600.00mil] [2300.00mil 2600.00mil] [1650.00mil 2900.00mil] 
@@ -4746,6 +4755,7 @@ NetList()
 		Connect("C12-1")
 		Connect("C13-1")
 		Connect("C14-1")
+		Connect("C15-1")
 		Connect("C30-2")
 		Connect("C31-2")
 		Connect("C43-1")
@@ -5400,6 +5410,7 @@ NetList()
 	Net("v_ldo_in" "(unknown)")
 	(
 		Connect("C7-1")
+		Connect("C15-2")
 		Connect("D9-2")
 		Connect("R36-2")
 		Connect("U7-1")
diff --git a/telefireeight.sch b/telefireeight.sch
index 278fb85..233e7a7 100644
--- a/telefireeight.sch
+++ b/telefireeight.sch
@@ -1609,11 +1609,11 @@ T 66600 64100 5 10 1 1 0 0 1
 value=IRLR8743PbF
 }
 N 45500 47100 45500 47500 4
-N 59200 41900 68800 41900 4
+N 58300 41900 68800 41900 4
 N 61700 41900 61700 43400 4
-N 57100 44300 57600 44300 4
+N 56200 44300 56700 44300 4
 {
-T 57100 44400 5 10 1 1 0 0 1
+T 56200 44400 5 10 1 1 0 0 1
 netname=v_lipo
 }
 C 62900 44300 1 0 0 3.3V-plus.sym
@@ -1653,26 +1653,26 @@ refdes=R38
 T 68300 43600 5 10 1 1 0 0 1
 value=200k
 }
-C 60100 41900 1 90 0 resistor.sym
+C 59200 41900 1 90 0 resistor.sym
 {
-T 59700 42200 5 10 0 1 90 0 1
+T 58800 42200 5 10 0 1 90 0 1
 device=RESISTOR
-T 60100 41895 5 10 0 1 90 0 1
+T 59200 41895 5 10 0 1 90 0 1
 footprint=0402
-T 59800 42600 5 10 1 1 180 0 1
+T 58900 42600 5 10 1 1 180 0 1
 refdes=R37
-T 59500 42200 5 10 1 1 0 0 1
+T 58600 42200 5 10 1 1 0 0 1
 value=22k
 }
-C 60100 42800 1 90 0 resistor.sym
+C 59200 42800 1 90 0 resistor.sym
 {
-T 59700 43100 5 10 0 1 90 0 1
+T 58800 43100 5 10 0 1 90 0 1
 device=RESISTOR
-T 60100 42795 5 10 0 1 90 0 1
+T 59200 42795 5 10 0 1 90 0 1
 footprint=0402
-T 59800 43500 5 10 1 1 180 0 1
+T 58900 43500 5 10 1 1 180 0 1
 refdes=R36
-T 59400 43100 5 10 1 1 0 0 1
+T 58500 43100 5 10 1 1 0 0 1
 value=200k
 }
 N 68800 43400 69900 43400 4
@@ -1680,30 +1680,30 @@ N 68800 43400 69900 43400 4
 T 69200 43500 5 10 1 1 0 0 1
 netname=cmp_rail
 }
-N 60000 43700 60000 44300 4
-N 60000 42800 61300 42800 4
+N 59100 43700 59100 44300 4
+N 59100 42800 60900 42800 4
 {
-T 60400 42900 5 10 1 1 0 0 1
+T 60000 42900 5 10 1 1 0 0 1
 netname=cmp_ldo_in
 }
-C 57600 44100 1 0 0 diode.sym
+C 56700 44100 1 0 0 diode.sym
 {
-T 58000 44700 5 10 0 1 0 0 1
+T 57100 44700 5 10 0 1 0 0 1
 device=DIODE
-T 57600 44100 5 10 0 1 0 0 1
+T 56700 44100 5 10 0 1 0 0 1
 footprint=powerdi123
-T 57600 43800 5 10 0 1 0 0 1
+T 56700 43800 5 10 0 1 0 0 1
 value=DFLS130L
-T 57900 44600 5 10 1 1 0 0 1
+T 57000 44600 5 10 1 1 0 0 1
 refdes=D9
 }
-N 58500 44300 60600 44300 4
+N 57600 44300 60600 44300 4
 {
-T 59200 44400 5 10 1 1 0 0 1
+T 58300 44400 5 10 1 1 0 0 1
 netname=v_ldo_in
 }
-N 59200 44200 59200 44300 4
-N 59200 43300 59200 41900 4
+N 58300 44200 58300 44300 4
+N 58300 43300 58300 41900 4
 C 60400 41600 1 0 0 gnd.sym
 C 60600 43400 1 0 0 tps70933.sym
 {
@@ -1723,21 +1723,21 @@ value=NoConnection
 T 60100 44600 5 10 0 0 0 0 1
 device=DRC_Directive
 }
-C 59000 44200 1 270 0 cap-polar.sym
+C 58100 44200 1 270 0 cap-polar.sym
 {
-T 59900 44000 5 10 0 0 270 0 1
+T 59000 44000 5 10 0 0 270 0 1
 symversion=0.1
-T 59700 44000 5 10 0 1 270 0 1
+T 58800 44000 5 10 0 1 270 0 1
 device=CAPACITOR
-T 59000 44200 5 10 0 1 0 0 1
+T 58100 44200 5 10 0 1 0 0 1
 footprint=CAP_FC8
-T 59000 44200 5 10 0 1 0 0 1
+T 58100 44200 5 10 0 1 0 0 1
 vendor=digikey
-T 59000 44200 5 10 0 1 0 0 1
+T 58100 44200 5 10 0 1 0 0 1
 vendor_part_number=P10296-ND
-T 58700 43900 5 10 1 1 0 0 1
+T 57800 43900 5 10 1 1 0 0 1
 refdes=C7
-T 58600 43400 5 10 1 1 0 0 1
+T 57700 43400 5 10 1 1 0 0 1
 value=220uF
 }
 C 64400 43400 1 90 0 capacitor.sym
@@ -3398,3 +3398,17 @@ value=NoConnection
 T 47000 59900 5 10 0 0 0 0 1
 device=DRC_Directive
 }
+C 59800 43400 1 90 0 capacitor.sym
+{
+T 58900 43600 5 10 0 0 90 0 1
+symversion=0.1
+T 59100 43600 5 10 0 1 90 0 1
+device=CAPACITOR
+T 59800 43400 5 10 0 1 0 0 1
+footprint=0402
+T 60000 44200 5 10 1 1 180 0 1
+refdes=C15
+T 59700 43500 5 10 1 1 0 0 1
+value=0.1uF
+}
+N 59600 43400 59600 41900 4
-- 
2.30.2