All Questions
14 questions
3
votes
6
answers
550
views
Water level monitoring: simplest way
I like to develop a water level monitoring for my cistern tank: empty level, low level, mid level, high level.
One of my booster pumps broke because it runs even when there is no water in the cistern ...
- 31
3
votes
1
answer
495
views
Water level indicator LED lights up even though circuit is open
I have built a water level indicator with a 555 timer. The supply is a 12 V SMPS adapter, the output of 555 timer is a square wave with a 21 kHz frequency. I pass this signal into AC coupling to ...
- 41
0
votes
2
answers
433
views
Water level indicator using transistors
I'm trying to designing a water level indicator using npn transistor(BC548). I tried simulating the circuit on PSpice, but I don't know what to add for the sensor. I want a graph.
The circuit will ...
- 1
0
votes
1
answer
393
views
The reason behind LEDS getting dim (Water level indicator using ULN 2003) [closed]
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Whenever I switch on the circuit, the LEDs glow fully for a second and gets off. After 2-3 seconds they start glowing slowly.
What might be the reason for the above?
- 1
0
votes
3
answers
232
views
Water level sensor. How to read it?
I have a water level sensor in which by varying the level of the water, an inductance change his value in a mobile coil. The sensor have the internal simple schematic like this (i don't know the value ...
- 83
3
votes
2
answers
4k
views
What is the common name for this seal-in relay?
I'm trying to build a hysteresis water pump system with 2 water level switches. Please see the diagram and explanation of this setup I've taken off the web:
The first switch (L) is set at the minimum ...
- 31
1
vote
3
answers
552
views
Sensor For Continuous Water Level Measurement
I am designing water level controller for water tank and want to show the water level in LED bar Graph
I know how to transmit data to MCU and show level to LED bar graph but my problem is to find ...
- 154
1
vote
2
answers
1k
views
Tank Water Level Indicator Wire
I am building a simple water level indicator (approx like the circuit below) for my tank.
However, I am wondering about the wiring, for I suppose copper cables corrode in water and produce toxic ...
- 11
3
votes
2
answers
188
views
Point Water Level sensor
The company I work for uses conductive point-level water sensors to determine water level in a small tank. The manufacturer of these sensors has proven to have very unreliable quality control and ~30% ...
- 61
5
votes
5
answers
1k
views
Will this water level indicator circuit work for my project?
I have only rudimentary knowledge of electronics so I ask for your forbearance.
There are many water level indicator circuits, of the type shown below, listed online and demonstrated on YouTube.
The ...
- 61
2
votes
0
answers
72
views
Need a simple buzzer/LED circuit for espresso machine [duplicate]
I have an espresso machine that I tore down, reassembled with fewer components then modified it to fit a specific setup -- kind of DIY project.
The machine has an autofill circuit. After I removed ...
- 21
1
vote
1
answer
3k
views
Water level indicator with PNP transistor
I wanted to create a circuit that Lit's up an LED when water level rises to a certain level.
I have created the following schematics following the https://www.electronicshub.org/water-level-alarm-...
- 113
0
votes
1
answer
162
views
can contactor, water level sensor and heater all live in parallel on the same circuit
I want to connect my 3000w (220v) water heating element to a 220v water level sensor Automático de Nível so that the heating element won't turn on when there is no water present.
But the level sensor ...
3
votes
3
answers
6k
views
Electrical conductivity to determine reservoir water level to switch on/off pump
Did a survey of the commercial products available in the local market, which are broadly classified as 'Automatic Water Level Controller' or 'Automatic Pump Controllers', and found that all of them ...
- 258