1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
16
Q2
MCU SOIC16
a
g
c
dp
d
e
b
f
c1
c2
c3
1
OUT
2
IN
3
GND
Q1
MD71H33 3.3v 30mA
D1
SD103AW 40V 300mA
C3
0.1uF
C2
22uF
PWR+
GND
VIN
R2
230k
R1
10k
R3
10k
180
a
11
b
7
c
4
d
2
e
1
f
10
g
5
dp
3
C
1
1
2
C
2
9
C
3
8
S1
3DGIT 7SEG CASODE COMMON
180
180
180
180
180
180
180
a
b
c
d
e
f
g
dp
c1
c2
c3
2
1
S
2WIRE
Vin
Voltage Divider
Vin x 0.0416 to 0.04
Actual chip Vin vs disp:
2,003mV "29.9"
1,675mV "25.0"
1,340mV "20.0"
670mV "10.0"
335mV "5.00"
68.2mV "1.00"
34.7mV "0.50"
7.9mV "0.10"
4.8mV "0.05"
0.8mV "0.01"