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參數資料
| 型號： | LM1851 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Ground Fault Interrupter |
| 中文描述： | 接地故障遮斷 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 165K |
| 代理商： | LM1851 |
TL/H/5177
L
June 1992
LM1851 Ground Fault Interrupter
General Description
The LM1851 is designed to provide ground fault protection
for AC power outlets in consumer and industrial environ-
ments. Ground fault currents greater than a presettable
threshold value will trigger an external SCR-driven circuit
breaker to interrupt the AC line and remove the fault condi-
tion. In addition to detection of conventional hot wire to
ground faults, the neutral fault condition is also detected.
Full advantage of the U.S. UL943 timing specification is tak-
en to insure maximum immunity to false triggering due to
line noise. Special features include circuitry that rapidly re-
sets the timing capacitor in the event that noise pulses intro-
duce unwanted charging currents and a memory circuit that
allows firing of even a sluggish breaker on either half-cycle
of the line voltage when external full-wave rectification is
used.
Features
Y
Internal power supply shunt regulator
Y
Externally programmable fault current threshold
Y
Externally programmable fault current integration time
Y
Direct interface to SCR
Y
Operates under line reversal; both load vs line and hot
vs neutral
Y
Detects neutral line faults
Block and Connection Diagram
TL/H/5177–1
Order Number LM1851M or LM1851N
See NS Package Number M08A or N08E
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
相關PDF資料 |
PDF描述 |
|---|---|
| LM1851M | Ground Fault Interrupter |
| LM1851N | Ground Fault Interrupter |
| LM185B | MICROCIRCUIT DATA SHEET |
| LM185BE | MICROCIRCUIT DATA SHEET |
| LM185BE883 | MICROCIRCUIT DATA SHEET |
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| LM185-1.2-N | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM185-1.2-N/LM285-1.2-N/LM385-1.2-N Micropower Voltage Reference Diode |
| LM185-1.2-N_13 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM185-1.2-N/LM285-1.2-N/LM385-1.2-N Micropower Voltage Reference Diode |
| LM185-1.2QML | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM185-1.2QML Micropower Voltage Reference Diode |
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