From: Doug Coffland <dougcoffland@gmail.com>
Date: Sun, 26 Jun 2016 04:50:53 +0000 (-0700)
Subject: modified softstart circuit in power.sch, removed Zener in polarity control circuit... 
X-Git-Url: https://git.buildbotics.com/?a=commitdiff_plain;h=bd11a7872af3e83eaef6451e7dfdf158982f07a7;p=bbctrl-pcb

modified softstart circuit in power.sch, removed Zener in polarity control circuit, changed R20 to 100 ohms decreasing C1 charge time, reduced C20 to 1uF reducing Q1 turnon time, added D4 to provide fast discharge path for C20
---

diff --git a/electronics/power.sch b/electronics/power.sch
index eb24303..5485856 100644
--- a/electronics/power.sch
+++ b/electronics/power.sch
@@ -201,19 +201,6 @@ description=Murata 0.10µF ±10% 50V X7R Ceramic Capacitor -55°C ~ 125°C Surfa
 N 54800 45100 54800 44900 4
 N 54800 45500 54800 45900 4
 C 49400 47000 1 0 0 gnd.sym
-C 46400 47550 1 0 0 zener.sym
-{
-T 45800 48950 5 10 0 0 0 0 1
-device=ZENER
-T 46850 47800 5 10 1 1 90 0 1
-refdes=Z1
-T 46400 47550 5 10 0 0 90 0 1
-description=DIODE ZENER 14V 200MW SMINI2 
-T 46400 47550 5 10 0 0 90 0 1
-footprint=SOD323 
-T 46400 47550 5 10 0 0 270 0 1
-model=DZ2J140M0L
-}
 C 45400 47800 1 180 0 NMOSFET_TPHR204P_L1Q.sym
 {
 T 44700 46850 5 10 1 1 0 2 1
@@ -990,7 +977,7 @@ N 43200 47100 44200 47100 4
 N 44200 47100 44200 47700 4
 N 45400 49700 48400 49700 4
 N 45400 49700 45400 49500 4
-N 48400 49300 48400 49700 4
+N 48400 49500 48400 49700 4
 C 43900 48200 1 0 0 resistor.sym
 {
 T 44200 48600 5 10 0 0 0 0 1
@@ -998,13 +985,13 @@ device=RESISTOR
 T 44000 48375 5 10 1 1 0 0 1
 refdes=R20
 T 44400 48375 5 10 1 1 0 0 1
-value=300
+value=100
 T 43900 48200 5 10 0 0 0 0 1
-model=3521300RFT
+model=CRM2512-FX-1000ELF
 T 43900 48200 5 10 0 0 0 0 1
 footprint=2512
 T 43900 48200 5 10 0 0 0 0 1
-description=TE RES SMD 300 OHM 1% 2W 251
+description=RES SMD 100 OHM 1% 2W 2512
 }
 N 44900 48300 44500 48300 4
 N 43700 47100 43700 48300 4
@@ -1018,33 +1005,31 @@ device=CAPACITOR
 T 47150 47500 5 10 1 1 90 0 1
 refdes=C20
 T 47100 48000 5 10 1 1 90 0 1
-value=15uF
+value=1uF
 T 47400 47600 5 10 0 0 0 0 1
-model=C3225X7R1C156M250AB 
+model=CL21B105KAFNNNE
 T 47400 47600 5 10 0 0 0 0 1
-footprint=1210_ext
+footprint=0805_ext
 T 47400 47600 5 10 0 0 0 0 1
-description=TDK 15µF ±20% 16V X7R Ceramic Capacitor -55°C ~ 125°C Surface Mount, MLCC 1210
+description=Samsung  1µF ±10% 25V X7R Ceramic Capacitor -55°C ~ 125°C Surface Mount, MLCC 0805 (2012 Metric)
 }
 N 45400 48900 45400 49100 4
-N 48400 48100 48400 48900 4
+N 48400 48100 48400 49100 4
 N 46000 48500 46000 47700 4
 N 48400 47700 48400 47300 4
-N 46500 48500 46500 48100 4
-N 46500 47600 46500 47300 4
-C 48500 48700 1 90 0 resistor.sym
+C 48500 48900 1 90 0 resistor.sym
 {
-T 48100 49000 5 10 0 0 90 0 1
+T 48100 49200 5 10 0 0 90 0 1
 device=RESISTOR
-T 48325 48800 5 10 1 1 90 0 1
+T 48325 49000 5 10 1 1 90 0 1
 refdes=R23
-T 48325 49200 5 10 1 1 90 0 1
+T 48325 49400 5 10 1 1 90 0 1
 value=20k
-T 48500 48700 5 10 0 0 0 0 1
+T 48500 48900 5 10 0 0 0 0 1
 footprint=0805_ext
-T 48500 48700 5 10 0 0 0 0 1
+T 48500 48900 5 10 0 0 0 0 1
 model=RC0805FR-0720KL 
-T 48500 48700 5 10 0 0 0 0 1
+T 48500 48900 5 10 0 0 0 0 1
 description=Yageo  RES SMD 20K OHM 1% 1/8W 0805
 }
 C 45500 48900 1 90 0 resistor.sym
@@ -1081,9 +1066,9 @@ C 48200 48600 1 180 0 resistor.sym
 {
 T 47900 48200 5 10 0 0 180 0 1
 device=RESISTOR
-T 47600 48825 5 10 1 1 180 0 1
+T 47700 48425 5 10 1 1 180 0 1
 refdes=R22
-T 48100 48825 5 10 1 1 180 0 1
+T 48100 48425 5 10 1 1 180 0 1
 value=2M
 T 48200 48600 5 10 0 0 90 0 1
 footprint=0805_ext
@@ -1092,8 +1077,23 @@ model=RC0805JR-072ML
 T 48200 48600 5 10 0 0 90 0 1
 description=Yageo RES SMD 2M OHM 5% 1/8W 0805
 }
-N 46000 48500 47600 48500 4
 N 48000 48500 48400 48500 4
-N 47300 48100 47300 48500 4
+N 47300 48100 47300 48700 4
 N 47300 47700 47300 47300 4
 N 45400 47700 46000 47700 4
+N 47300 48700 47600 48700 4
+N 46000 48500 47600 48500 4
+N 48100 48700 48400 48700 4
+C 47600 48600 1 0 0 diodeA2K1.sym
+{
+T 47600 49100 5 10 0 0 0 0 1
+device=DIODE
+T 47800 48900 5 10 1 1 0 0 1
+refdes=D4
+T 47600 48600 5 10 0 0 0 0 1
+model=S1A
+T 47600 48600 5 10 0 0 0 0 1
+description=Fairchild DIODE GEN PURP 50V 1A SMA
+T 47600 48600 5 10 0 0 0 0 1
+footprint=DO214AC
+}
diff --git a/electronics/symbols/diodeA2K1.sym b/electronics/symbols/diodeA2K1.sym
new file mode 100644
index 0000000..759a34c
--- /dev/null
+++ b/electronics/symbols/diodeA2K1.sym
@@ -0,0 +1,33 @@
+v 20130925 2
+L 150 200 150 0 3 0 0 0 -1 -1
+L 150 200 325 100 3 0 0 0 -1 -1
+T 0 500 5 10 0 0 0 0 1
+device=DIODE
+L 325 100 150 0 3 0 0 0 -1 -1
+L 325 175 325 25 3 0 0 0 -1 -1
+P 0 100 100 100 1 0 0
+{
+T 100 150 5 8 0 1 0 0 1
+pinnumber=2
+T 100 150 5 8 0 0 0 0 1
+pinseq=2
+T 100 150 5 8 0 1 0 0 1
+pinlabel=2
+T 100 150 5 8 0 1 0 0 1
+pintype=pas
+}
+P 500 100 400 100 1 0 0
+{
+T 300 150 5 8 0 1 0 0 1
+pinnumber=1
+T 300 150 5 8 0 0 0 0 1
+pinseq=1
+T 300 150 5 8 0 1 0 0 1
+pinlabel=1
+T 300 150 5 8 0 1 0 0 1
+pintype=pas
+}
+L 400 100 325 100 3 0 0 0 -1 -1
+L 100 100 150 100 3 0 0 0 -1 -1
+T 200 300 8 10 1 1 0 0 1
+refdes=D?