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參數(shù)資料
| 型號(hào)： | FAN1851AMX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | Ground Fault Interrupter |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, SOIC-8 |
| 文件頁(yè)數(shù)： | 7/11頁(yè) |
| 文件大小： | 122K |
| 代理商： | FAN1851AMX |
PRODUCT SPECIFICATION
FAN1851A
REV. 2.0.1 6/17/05
7
where:
T = integration time
V = threshold voltage
I = average fault current into CT
(6)
therefore:
(7)
I
120 V
rms
R
B
)
------------------------------------
RN
+
RG
RN
-----------------------
=
heavy fault
current generated
(swamps I
TH
)
portion of fault
current shunted
around GFI
1000 turns
----1 turn
1
0.91
)
×
×
×
current
division of
input sense
transformer
CT
charging
on half-
cycles
only
rms to
average
conversion
CT
500
120
+
1.6
0.4
-------0.4
×
1000
---1
×
×
0.91
(
)
×
17.5
-----------------------------------------------------------------------------------------------------------------
0.008
×
=
CT
0.01 μF
=
In practice, the actual value of C
T
will have to be modified
to include the effects of the neutral loop upon the net charg-
ing current. The effect of neutral loop induced currents is dif-
ficult to quantify, but typically they sum with normal fault
currents, thus allowing a larger value of C
T
. For UL943
requirements, 0.015μF has been found to be the best com-
promise between timing and noise.
For those GFI standards not requiring grounded neutral
detection, a still larger value capacity can be used and better
noise immunity obtained. The larger capacitor can be accom-
modated because R
N
and R
G
are not present, allowing the
full fault current, I, to enter the GFI.
In Figure 10, grounded neutral detection is accomplished by
feeding the neutral coil with 120Hz energy continuously and
allowing some of the energy to couple into the sense trans-
former during conditions of neutral fault.
Transformers may be obtained from Magnetic Metals, Inc.,
(http://www.magmet.com).
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| FAN1851AN | Ground Fault Interrupter |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN1851AN | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 ANG FG GFI RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| FAN1852MX | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN1852MX_SN00164 | 制造商:Fairchild Semiconductor Corporation 功能描述:FAN1852MX_SN00164-LEVITON |
| FAN1950 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:1.5A Low-Voltage Low-Dropout Regulator |
| FAN1950D25X | 功能描述:低壓差穩(wěn)壓器 - LDO ANG FG LDO 2.5V FIX IN 3-LEAD DPAK RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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