LM139ADT 데이터 시트보기 (PDF) - STMicroelectronics
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LM139ADT Datasheet PDF : 19 Pages
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Typical applications
Figure 18. Limit comparator
VCC (12 V)
V(ref)
high
2RS
RS
10 kΩ
1/ 4
LM139
Lamp
e~
I
V(ref)
low
2RS
1/ 4
LM139
2N 2222
Figure 20. Zero crossing detector
15 V
LM139, LM239, LM339
Figure 19. Crystal-controlled oscillator
V
CC
= 15 V
200 kΩ
0.1 μF
100 kΩ
1/ 4
LM139
2 kΩ
VCC
0
eo
200 kΩ
f = 100 kHz
Figure 21. Comparator with a negative
reference
15 V
eI ~
1/4
LM139
15 V
5.1 kΩ
eo
eI ~
1/ 4
LM139
5V
15 V
5.1 kΩ
eo
10/19
Doc ID 2159 Rev 3
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