- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385475 > LM1851N (NATIONAL SEMICONDUCTOR CORP) Ground Fault Interrupter PDF資料下載
參數(shù)資料
| 型號(hào)： | LM1851N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Ground Fault Interrupter |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 165K |
| 代理商： | LM1851N |
Application Circuits
(Continued)
in practice, the actual value of C1 will have to be modified to
include the effects of the neutral loop upon the net charging
current. The effect of neutral loop induced currents is diffi-
cult to quantize, but typically they sum with normal fault cur-
rents, thus allowing a larger value of C1.
For UL943 requirements, 0.015
m
F has been found to be
the best compromise between timing and noise.
For those GFI standards not requiring grounded neutral de-
tection, a still larger value capacitor can be used and better
noise immunity obtained. The larger capacitor can be ac-
commodated because R
N
and R
G
are not present, allowing
the full fault current, I, to enter the GFI.
In Figure 2, grounded neutral detection is accomplished by
feeding the neutral coil with 120 Hz energy continuously and
allowing some of the energy to couple into the sense trans-
former during conditions of neutral fault.
Typical Application
TL/H/5177–6
*
Adjust R
SET
for desired sensitivity
FIGURE 2. 120 Hz Neutral Transformer Approach
6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM185B | MICROCIRCUIT DATA SHEET |
| LM185BE | MICROCIRCUIT DATA SHEET |
| LM185BE883 | MICROCIRCUIT DATA SHEET |
| LM185BH883 | MICROCIRCUIT DATA SHEET |
| LM1863 | AM Radio System for Electronically Tuned Radios |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1851N/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ground Fault Interrupter |
| LM1851N/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ground Fault Interrupter |
| LM1851N/NOPB | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| LM185-2.5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower Voltage Reference |
| LM185-2.5 MD8 | 制造商:Texas Instruments 功能描述:DIE FORM - Gel-pak, waffle pack, wafer, diced wafer on film |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。