參數(shù)資料
型號： PS2603
廠商： NEC Corp.
英文描述： Optocoupler Applications
中文描述： 光耦應(yīng)用
文件頁數(shù)： 18/38頁
文件大小： 223K
代理商： PS2603
17
h
(
)
................ (8)
1 + R
BE2
When resistor R
BE
is serially connected to resistor R
L
(see Fig. 3-4 (c)), the reduction of a CTR becomes greater even if h
FE2
is
approximately equal to h
FE0
in expression (8) as the expression includes R
L
as a parameter.
Fig. 3-5 shows typical V
0
vs. I
F
characteristics of the above circuits (a), (b), and (c).
O
I
F
PS2601
R
BE
= 100 k
Vo
Vcc = 10V
R
L
= 470 k
Forward current I
F
(mA)
Figure 3-5. Vo vs. I
F
Characteristics
The reduction of a CTR is greatly affected by the positional relationship between load resistor R
L
and base-emitter resistor R
BE
,
as shown in Fig. 3-4 (b) and 3-4 (c).
h
(
1 -
)
................ (7)
V
2
h
FE0
I
CBL
R
BE1
V
The output voltage V
0
, V
1
, and V
2
of the above circuits (a), (b), and (c) are related as follows:
V
2
h
FE2
V
0
FE0
V
BE2
I
CBL
R
BE1
R
L
h
FE2
1 -
Figure 3-4 (a).
Open
I
CBL
V
BE
V
o
R
L
I
CBL
R
BE1
V
BE1
V
1
R
L
Figure 3-4 (b).
R
BE
Serial to R
L
I
CBL
R
BE2
V
BE2
V
2
R
L
Figure 3-4 (c).
R
BE
Parallel to R
L
10
8
6
4
2
0
1
2
5
10
20
50
(c) R
BG
= 100 k
(b) R
BE
= 100 k
(a) R
B
open
Vcc = 10 V
R
L
= 470
CTR = 190%
(PS2601)
相關(guān)PDF資料
PDF描述
PS2603L Optocoupler Applications
PS2604 Optocoupler Applications
PS2604L Optocoupler Applications
PS2602 Optocoupler Applications
PS2602L Optocoupler Applications
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PS2603L 制造商: 功能描述: 制造商:undefined 功能描述:
PS2604 制造商:California Eastern Laboratories (CEL) 功能描述:6pin DIP,Darlington Tr, DC, Coupler
PS2604L 制造商:NEC 制造商全稱:NEC 功能描述:Optocoupler Applications
PS2605 制造商:California Eastern Laboratories (CEL) 功能描述:6pin DIP,Single Tr, AC, Base, Coupler
PS2605L 制造商:NEC 制造商全稱:NEC 功能描述:Optocoupler Applications
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