TL431, A, B Series
Figure 26. Voltage Monitor
Figure 27. Single–Supply Comparator with
Temperature–Compensated Threshold
V+
V
out
V+
l
R1
R2
R3
V
out
V
in
R4
V
V
out
V+
in
V
= V
L.E.D. indicator is ‘on’ when V+ is between the
upper and lower limits.
th ref
< V
> V
ref
ref
≈ 2.0 V
R1
Lower Limit
Upper Limit
1
1
V
V
ref
ref
R2
R3
R4
Figure 28. Linear Ohmmeter
Figure 29. Simple 400 mW Phono Amplifier
25 V
1N5305
38 V
2.0 mA
330
T = 330 to 8.0
Ω
l
T
5.0 k
1%
50 k
1%
10 k
500 k
1%
5.0 M
1%
10 k
Calibrate
I
+
470 µF
8.0
Ω
Ω
360 k
56 k
100 k
Ω
V
25 V
1.0 M
Ω
V
1.0 µF
1.0 k
Ω
–
V
*
V
LM11
+
V
Range
out
Volume
47 k
0.05 µF
Tone
*Thermalloy
*THM 6024
*Heatsink on
*LP Package
–5.0 V
Range
R
X
10 k
25 k
R
x
V
out
V
9
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
