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參數(shù)資料
| 型號： | PS2622 |
| 廠商： | NEC Corp. |
| 英文描述： | Optocoupler Applications |
| 中文描述： | 光耦應(yīng)用 |
| 文件頁數(shù)： | 35/38頁 |
| 文件大?。?/td> | 223K |
| 代理商： | PS2622 |
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34
DIRECT INPUT OF 100 Vac
Figure 3 shows the circuit diagram when 100 Vac power is directly input to an AC input compatible optocoupler via a current limit
resistor. The relationship between input and output signals is as shown in Figure 4.
+
0
_
+
0
LED 1
LED 2
LED 1
LED 2
LED 1
LED 2
Deviation due to
the differences in
light emission and
coupling efficiencies
of LEDs
Input signal
AC 100 V
LED light
emission
output
Output signal
Graph 1 Upper: 100 Vac Input Signal 100 V/DIV
Lower: Output Signal 1 V/DIV
As described above, when an AC input compatible optocoupler is used, an AC input signal can be extracted as a full-wave
rectified output signal. The output signal is smoothed by inserting a capacitor in the last stage of the circuit of a phototransistor if
necessary.
In the one-direction input optocoupler (PS2501 series), when an AC signal is to be input, it must be full-or half-wave rectified by a
diode bridge or CR circuit. On the other hand, the AC input compatible optocoupler permits direct input of an AC signal. This
enables simpler configuration, space saving, and reduced design cost.
The next section demonstrates three examples of applications.
Figure 4. Input/Output Signal
(LED2) (LED1)
PS2505-1
11 k
AC 100 V
100
Output signal
V
CC
= 10 V
Figure 3. 100 Vac Direct Input Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PS2622L | Optocoupler Applications |
| PS2653 | Optocoupler Applications |
| PS2653L2 | Optocoupler Applications |
| PS2654L2 | Optocoupler Applications |
| PS2625 | HIGH ISOLATION VOLTAGE AC INPUT LARGE FORWARD AC INPUT TYPE 6 PIN PHOTOCOUPLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PS2622L | 制造商:NEC 制造商全稱:NEC 功能描述:Optocoupler Applications |
| PS2625 | 制造商:NEC 制造商全稱:NEC 功能描述:Optocoupler Applications |
| PS2625L | 制造商:NEC 制造商全稱:NEC 功能描述:Optocoupler Applications |
| PS2626 | 制造商:California Eastern Laboratories (CEL) 功能描述:6pin DIP,Single Tr, AC, High Input, Coupler 制造商:Renesas Electronics 功能描述:Optocoupl AC-IN 1-CH Trans DC-OUT 6-Pin PDIP Cut Tape |
| PS2626L | 制造商:NEC 制造商全稱:NEC 功能描述:Optocoupler Applications |
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