Commit 356736f4 authored by Anders Wallin's avatar Anders Wallin

pda schematic comments

parent 94e7a636
This diff is collapsed.
update=Mon 23 Oct 2017 20:06:34 EEST
update=ti 16. tammikuuta 2018 10.28.38
version=1
last_client=kicad
[pcbnew]
......
EESchema Schematic File Version 2
LIBS:PDA_2017.04-rescue
LIBS:power
LIBS:device
LIBS:transistors
......@@ -30,7 +29,6 @@ LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:aw
LIBS:PDA_2017.04-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
......@@ -295,7 +293,7 @@ Wire Wire Line
3300 3200 3300 3550
Connection ~ 3300 3450
Text Notes 1800 2550 0 60 ~ 0
trigger level, ca 1V
trigger level, ca 1.0 V
Text GLabel 1500 2150 0 60 Input ~ 0
VREF
Wire Wire Line
......@@ -990,8 +988,8 @@ Wire Wire Line
6850 4400 6650 4400
Wire Wire Line
6350 4400 5550 4400
Text Notes 4350 5900 0 60 ~ 0
divcode 5, Ndiv = 32768\n\nt_out = N_div * (Rset / 50k) * 1us\nRset=300k gives ca 200 ms (?)
Text Notes 3700 6250 0 60 ~ 0
R106, R107, R108 chosen for a suitable BLINK pulse for the LED\n\ndivcode 5, Ndiv = 32768\n\nt_out = N_div * (Rset / 50k) * 1us\nRset=300k gives ca 200 ms long BLINK
Text Notes 4900 4150 0 60 ~ 0
SOT23-6
Wire Wire Line
......@@ -1057,11 +1055,11 @@ Text Notes 1400 2500 0 60 ~ 0
Text Label 5700 4400 0 60 ~ 0
BLINK
Text Notes 6950 4100 0 60 ~ 0
FRONT PANEL 1PPS LED\nmount standard SMD lide side-ways, or find side-output SMD LED(?)\nALT: thru-hole 100mil LED, e.g. digikey 1497-1359-ND
FRONT PANEL 1PPS LED\nmount standard SMD lide side-ways, or find side-output SMD LED(?)\nAlternative: thru-hole 100mil LED, e.g. digikey 1497-1359-ND
Text Notes 1500 5600 0 60 ~ 0
230VAC to 5VDC "brick" SMSP supply\nfor 3V3 low noise linear regulator
Text Notes 3100 1000 0 60 ~ 0
protection diodes not used on prototypes
Text Notes 3100 1100 0 60 ~ 0
DNI\nprotection diodes not used on prototypes
Text Notes 6950 6400 0 60 ~ 0
Copyright Anders E. E. Wallin 2017.\n\nThis documentation describes Open Hardware and is licensed under the CERN OHL v. 1.2.\n\nYou may redistribute and modify this documentation under the terms of the\nCERN OHL v.1.2. (http://ohwr.org/cernohl). This documentation is distributed\nWITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF\nMERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A\nPARTICULAR PURPOSE. Please see the CERN OHL v.1.2 for applicable conditions
Wire Notes Line
......@@ -1097,4 +1095,10 @@ Wire Wire Line
Wire Wire Line
6750 4150 6750 4400
Connection ~ 6750 4400
Wire Notes Line
4300 7300 5100 7300
Text Notes 3800 7600 0 60 ~ 0
front M3 holes removed 2018-01
Wire Notes Line
4250 4650 3950 4650
$EndSCHEMATC
EESchema Schematic File Version 2
LIBS:PDA_2017.04-rescue
LIBS:power
LIBS:device
LIBS:transistors
......@@ -30,7 +29,6 @@ LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:aw
LIBS:PDA_2017.04-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
......
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