LM1830 National Semiconductor, LM1830 Datasheet

no-image

LM1830

Manufacturer Part Number
LM1830
Description
Fluid Detector
Manufacturer
National Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM1830N
Manufacturer:
NSC
Quantity:
201
Part Number:
LM1830N
Manufacturer:
NSC
Quantity:
5 510
Part Number:
LM1830N
Manufacturer:
NS
Quantity:
3 299
C 1995 National Semiconductor Corporation
Logic and Connection Diagram
LM1830 Fluid Detector
General Description
The LM1830 is a monolithic bipolar integrated circuit de-
signed for use in fluid detection systems The circuit is ideal
for detecting the presence absence or level of water or
other polar liquids An AC signal is passed through two
probes within the fluid A detector determines the presence
or absence of the fluid by comparing the resistance of the
fluid between the probes with the resistance internal to the
integrated circuit An AC signal is used to overcome plating
problems incurred by using a DC source A pin is available
for connecting an external resistance in cases where the
fluid impedance is of a different magnitude than that of the
internal resistor When the probe resistance increases
above the preset value the oscillator signal is coupled to
the base of the open-collector output transistor In a typical
application the output could be used to drive a LED loud
speaker or a low current relay
TL H 5700
See NS Package Number N14A
Order Number LM1830N
Dual-In-Line Package
Features
Y
Y
Y
Y
Y
Y
Applications
Y
Y
Y
Y
Y
Low external parts count
Wide supply operating range
One side of probe input can be grounded
AC coupling to probe to prevent plating
Internally regulated supply
AC or DC output
Beverage dispensers
Water softeners
Irrigation
Sump pumps
Aquaria
TL H 5700– 1
Y
Y
Y
Y
Radiators
Washing machines
Reservoirs
Boilers
RRD-B30M115 Printed in U S A
February 1995

Related parts for LM1830

Related keywords