LM1851M ,Ground Fault InterrupterLM1851GroundFaultInterrupterJune1992LM1851GroundFaultInterrupterGeneralDescription
LM1851M ,Ground Fault InterrupterLM1851GroundFaultInterrupterJune1992LM1851GroundFaultInterrupterGeneralDescription
LM1851N ,Ground Fault InterrupterLM1851GroundFaultInterrupterJune1992LM1851GroundFaultInterrupterGeneralDescription
LM185BXH-1.2 ,Micropower Voltage Reference Diodefeatures exceptionally low dynamic impedance and goodtemperature stability. On-chip trimming is us ..
LM185BXH-2.5 ,Micropower Voltage Reference Diodefeatures exceptionally low dynamic impedance and goodtemperature stability. On-chip trimming is us ..
LM185BYH1.2 ,Micropower Voltage Reference Diodefeatures exceptionally low dynamic impedance andgood temperature stability. On-chip trimming is use ..
LM3S6938 ,Stellaris LM3S Microcontroller 108-NFBGA -40 to 85TEXAS INSTRUMENTS-PRODUCTION DATA®StellarisLM3S6938MicrocontrollerDATA SHEETDS-LM3S6938-15852 .2743 ..
LM3S6938-IQC50-A2 ,Stellaris LM3S Microcontroller 100-LQFP -40 to 85/stellarishttp://www-k.ext.ti.com/sc/technical-support/product-information-centers.htm2July15,2014T ..
LM3S6950 ,Stellaris LM3S Microcontroller 108-NFBGA -40 to 85TEXAS INSTRUMENTS-PRODUCTION DATA®StellarisLM3S6950MicrocontrollerDATA SHEETDS-LM3S6950-15852.2743 ..
LM3S6950-IBZ50-A2 ,Stellaris LM3S Microcontroller 108-NFBGA -40 to 85/stellarishttp://www-k.ext.ti.com/sc/technical-support/product-information-centers.htm2July15,2014T ..
LM3S6950-IQC50-A2 ,Stellaris LM3S Microcontroller 100-LQFP -40 to 85Features.......331.2TargetApplications.....411.3High-LevelBlockDiagram...421.4FunctionalOverview... ..
LM3S6952 ,Stellaris LM3S Microcontroller 108-NFBGA -40 to 85TEXAS INSTRUMENTS-PRODUCTION DATA®StellarisLM3S6952MicrocontrollerDATA SHEETDS-LM3S6952-15852 .2743 ..
LM1851M-LM1851N
Ground Fault Interrupter
TL/H/5177
LM1851
Ground
Fault
Interrupter
June 1992
LM1851 Ground Fault Interrupter
General Description
The LM1851is designedto provide ground fault protection
forAC power outletsin consumer and industrial environ-
ments. Ground fault currents greater thana presettable
threshold valuewill triggeran external SCR-driven circuit
breakerto interrupttheAClineand removethe fault condi-
tion.In additionto detectionof conventionalhot wireto
ground faults,the neutral fault conditionis also detected.
Full advantageofthe U.S. UL943timing specificationistak-to insure maximum immunityto false triggeringdueto
line noise. Special features include circuitrythat rapidlyre-
setsthe timing capacitorinthe eventthat noisepulsesintro-
duce unwanted charging currentsanda memory circuitthat
allows firingof evena sluggish breakeron either half-cycletheline voltage when external full-wave rectificationis
used.
Features Internal power supply shunt regulator Externally programmable fault current threshold Externally programmable fault current integration time Direct interfaceto SCR Operates underline reversal; both loadvsline andhot neutral Detects neutralline faults
Block and Connection Diagram
TL/H/5177–1
OrderNumber LM1851Mor LM1851N
SeeNS Package Number M08Aor N08E
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
