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12vDC Sump Pump Control - A simple control to turn on and off a
12v DC sump pump (like a boat bilge pump) as water level rises in the sump….
[Circuit Design by Burton Lang] |
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12-volt Cellar Drain Pump - This circuit lets you control a pump,
to keep the level of water in a cellar below a certain threshold, for
example. Power is supplied to the pump by a battery that is recharged
automatically when the AC powerline voltage is present…requires login to see
circuit.... [Published in Elecktor July/August 2010] |
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15 Volt Toilet Tank Refiller - (electronic diagram added 6/03)
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AN1013: Gas & Water Metering with the PIC16F91X Family - Microchip
Application Note Published 20-Jan-06....[App Note] |
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Circuit checks "swamp-cooler" water level 10/31/02 EDN-Design Ideas....A
"swamp cooler" is an easy way to obtain effective air conditioning,
especially in hot and dry climates, if a water source is readily available.
Although most units are very reliable, the storage-reservoir control usually
uses a single level-detector component. Failure of this component can lead
to serious water damage.... [Design Idea by Daniel Krones, Precision Design
Services, Sky Forest, CA] |
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Circuit checks swamp cooler water level - 31-Oct-02 Issue of EDN A
"swamp cooler" is an easy way to obtain effective air conditioning, especially in hot
and dry climates, if a water source is readily available. Although most units are very
reliable, the storage-reservoir control usually uses a single level-detector
component. Failure of this component can lead to serious water damage.... [Design Idea
by Daniel Krones, Precision Design Services, Sky Forest, CA] |
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CMOS NAND gates control sump pump - 14-May-09 Issue of EDN A similar
circuit lets you control both the sump pump and the water level.... [Design Idea by V
Gopalakrishnan, Indira Gandhi Center for Atomic Research, Kalpakkam, India] |
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Economical Pump Controller - Having a reliable system to pump out a sump pit
is essential as mistakes and failures can lead to serious flooding and enormous
expense. In our article Sump Pump Control System we introduced a selection of
electronic solutions to the following problems.... [REUK - Renewable Energy UK
website] |
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Electrodeless Water Level Monitor - This is an illustration how two coils
inside a PVC pipe can be used to monitor the level of water in a tank. Current
induced into the water from the bottom coil is only detected by the upper coil, when
it is under water. [Designed by David A. Johnson] |
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Float Switch Water Level Measurement - Find out how to use float switches in
renewable energy applications…. [REUK - Renewable Energy UK website] |
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Gas & Water Metering with the PIC16F91X Family - Microchip Application Note
Published 20-Jan-06....[App Note] |
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Hot Water Tank Indicator - The idea for this project may have come to me in
a flash of inspiration, and its a very simple way to check if a fuse has blown without
removing it from its holder….(circuit / design added 8/03) |
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Infra-Red IR Beam Alarm/ Proximity Detector - This circuit can be used as an
Infrared beam barrier as well as a proximity detector. The circuit uses the very
popular Sharp IR module (Vishay module can also be used). The pin nos. shown in the
circuit are for the Sharp & VIshay modules. For other modules please refer to their
respective datasheets. The receiver consists of a 555 timer IC working as an
oscillator at....(added 11/06) |
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Infra-red Liquid Level Detector - Useful for liquids level detection and
proximity devices Up to50 cm. range, optional relay operation (added 4/05)
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One wire bus powers water level sensor - 02/15/00 EDN-Design
Ideas....remotely monitor the level of liquid water in a vessel such as a swimming
pool.... EDN is migrating links. This link is not verified. Search the "title" +
"EDN" for new link. |
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Petrol/Diesel Level Sensor - This sensor is particularly suitable for use in
small spaces, such as the petrol tank of a motorbike. It has the advantage of not
having any moving parts, unlike a conventional sensor with a float and float arm that
make it difficult to fit in a tank….must register on this site.... [Published in
Elecktor July/August 2010] |
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Piezo crystal monitors liquid level - 03/30/00 EDN-Design Ideas....The
simple and inexpensive circuit in Figure 1 monitors the liquid level in a container.
The piezo crystal, carefully mounted at the bottom surface of the container, receives
it activation from the 74HCT14 hex Schmitt trigger. The….PDF contains multiple
circuits, please scroll to find this one.... [Design Idea by J Jayapandian, IGCAR,
Tamil Nadu, India] |
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Pump Controller - Having a reliable system to pump out a sump pit is
essential as mistakes and failures can lead to serious flooding and enormous expense.
In our article Sump Pump Control System we introduced a selection of electronic
solutions to the following problems.... [REUK - Renewable Energy UK website] |
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Simple Sump Pump Controller - Put together a sump pump controller with two
float switches and NO electronics…. [REUK - Renewable Energy UK website] |
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Simple Well Pump Controller - Find out how to automatically get water from
the well into a header tank…. [REUK - Renewable Energy UK website] |
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Sump Pump Controller - Put together a sump pump controller with two float
switches and NO electronics…. [REUK - Renewable Energy UK website] |
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Water Alarm - The LM1830 fluid detector IC from National Semiconductor is
designed to be able to detect the presence of fluids using a probe. This chip requires
a relatively high supply voltage and is not the most frugal power consumer. It is also
quite specialised so unless you are buying in bulk the one-off price is not
cheap.….must register on this site.... [Published in Elecktor July/August 2010] |
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Water Drain Pump Controller - A hole needs to be digged at the lowest place
in the celler that have water incomming problems. The hole is about 0.5 x 0.5 x 0.5
meter, at the bottom a large water pump is mounted. Then the different water levels
was measured, so we know how to make the sensors. ….(design added 11/08) |
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Water Flowing in Pipe Indicator - The vibrations associated with water
flowing through a pipe are picked up by an inexpensive piezoelectric wafer. The
signal from the wafer is first boosted by a micropower transistor amplifier and then
fed to an ultra low power voltage comparator. When the vibration signal
has sufficient amplitude, a FET transistor switch is activated. Drawing only
6uA, the whole circuit is powered by a lithium coin battery, which should power the
circuit for many years.... [Designed by David A. Johnson] |
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Water Level Alarm - A circuit that offers visual indication of fluid level
in a vessel, with a switchable audible alarm. Example uses would be to monitor the
level of water in a bath or cold storage tank.… [Andy Collison's website] |
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Water Level Control/Monitor - A simple way to control the level of any
liquid in any container. (electronic schematic added 05/04) |
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Water Level Indicator with alarm - This circuit not only indicates the
amount of water present in the overhead tank but also gives an alarm when the tank is
full. The circuit uses the widely available CD4066, bilateral switch CMOS IC to
indicate the water level through LEDs. When the water is empty the wires in the tank
are open circuited and the 180K resistors pulls the switch(added 10/05) [Radioland.nt.au] |
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Water Level Reference Design - The Water Level Reference design continuously
monitors water level and water flow using the temperature compensated MPXM2010GS
pressure sensor in the low cost MPAK package, a dual op–amp, and the MC68HC908QT4,
8–pin microcontroller. This system uses very few components, reducing the
overall system cost. (app note added 3/05) |
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Water Pump Hysteresis Circuit - A simple circuit to prevent a pump being
damaged by being turned on and off rapidly (multiswitching)…. [REUK - Renewable Energy
UK website] |
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Water Seepage Alarm - This simple circuit sounds a beeper when its
electrodes detect water. A single 1.5v N cell powers it. A small 1.5v button battery
will also work. …. [Designed by David A. Johnson] |
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Water-level Alert - Beeper or flashing LED alert. (electronic design
added 6/07) |
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Water-Level Controller - .... |
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Water-level Indicator - The whole project was developed on a friend's
request. Its purpose was to remotely monitor the water-level in a metal tank located
in the attic by means of a very simple control unit placed in the kitchen, some floors
below. ….(electronic schematic added 11/08) |
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Water-level Sensing & Control - This is a simple but reliable circuit for
your sump-pump, aquarium, boat, or whatever, but water only. Please be careful when
working with 115Volt line voltage! Take every precaution to avoid electrical shock.
Unplug the power before making changes or touching resistor R1. Murphy's Law applies
to all of us!…. [Tony van Roon's circuit] |
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Waterpump Safety Guard for Fish-pond - The circuit below was developed to
guard the fish pond. In this case to prevent that the pump sucks just air when
the water level get below the pump. When the water filters get saturated and
dirty, the water level behind the filter gets to an unacceptable level. You can
see this when the pump also produces air bubbles in the water.... [Tony van Roon's
circuit] |
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Well Pump Controller - Find out how to automatically get water from the well
into a header tank…. [REUK - Renewable Energy UK website] |
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Wireless Liquid Level Sensing for Restaurant Applications - (circuit /
schematic design added 6/06) |
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