−
−
+
+
−
−
+
+
1
1
5
5
10
10
15
15
20
20
25
25
30
30
j
j
i
i
h
h
g
g
f
f
e
e
d
d
c
c
b
b
a
a
AO
DO
GND
VCC
YL-69
PWR
D0
LM393
U1 · YL-69
R1 · 470 Ω
D1 · green
U1 · YL-69
D1 · green
R1 · 470 Ω
2
2
3
3
4
4
5
5
10
10
g
g
i
i
j
j
MODEL · DC simulation
3.98 mA
0 A
5 pA
4.24 V
5 V
0 V
5 V
5 V
5 V
0 V
−
+
−
+
−
+
−
+
−
+
−
+
−
+
−
−
+
+
−
−
+
+
1
1
5
5
10
10
15
15
20
20
25
25
30
30
j
j
i
i
h
h
g
g
f
f
e
e
d
d
c
c
b
b
a
a
D1 · green
R1 · 470 Ω
U1 · YL-69
U1 · YL-69
D1 · green
R1 · 470 Ω
2
2
3
3
4
4
5
5
10
10
g
g
i
i
j
j
MODEL · DC simulation
3.98 mA
0 A
5 pA
4.24 V
5 V
0 V
5 V
5 V
5 V
0 V
−
+
−
+
−
+
−
+
−
+
−
+
−
+
Tap a part or a strip to see what it is and its simulated values Drag to move · pinch or wheel to zoom · double tap to frame a part Two fingers (or the mouse) to move · Ctrl + wheel or pinch to zoom