How can a transistor be used as a water level indicator?
When the water touches the metal contact in which base of each transistor is connected, a small current flows and turns on the transistor. When a transistor turns on, LED connected to it glows. Thus LEDs will be turned on depending up on the level of water.
How do you make a water level indicator circuit?
Components Required for Water Level Alarm Circuit
- 4 – BC547 transistors.
- 6 – 220 ohm resistors.
- 3 – Colour LEDs – red, green, and yellow.
- 1 – Buzzer.
- 5 – 9v battery + battery clip.
- Breadboard.
How does a water level indicator circuit work?
When water level increases and touches the sensor, the Red LED will glow indicating that there is water within the tank. As the water level continues to rise and reaches half the tank, Yellow LED will glow. When the water in the tank rises to full an alarm is made by the buzzer as an indication that the tank is full.
How do you use a plant water level indicator?
It can display the water level to remind you of watering. – When there is no water in the pot, the buoy of the water level gauge will be at the bottom. On this note, pull up the water level and water plants through the hole. – Simply insert the level into the soil, and it will help your plants grow healthy and strong.
Which IC used in water level indicator?
LM1801
Water Level Alarm Circuit using Level Sensor The circuit is very simple to build with the Microcontroller and also using basic electrical and electronic components. The IC used in this circuit is LM1801, and it is a low power comparator and it can also deliver high output current if needed.
What is the use of transistor BC547?
BC547 is usually used for current amplifier, quick switching and pulse-width modulation (PWM). Therefore, if you need to control the speed of a motor or actuator in some of your projects, you can simply use this transistor to achieve it.
Is there a water level indicator circuit using transistors?
In this article, we are presenting a very useful, cheap and simple Water Level Indicator circuit using transistors ( bc547) for beginners. This circuit indicates the level of water in the water tank using LEDs with transistors. you can use this project as a college project. The connections arrangements are shown in the circuit diagram shown above.
What kind of controllers are used for water level alarm?
Water level alarm using micro-controllers like 8051 and AVR are shown in previous articles.This article shows simple circuits of water level indicator with alarm. Three circuits were shown here are simple and built using transistors, 555 timer and ULN2003 IC.
How does a water level indicator work in a tank?
The Water Level Indicator employs a simple mechanism to detect and indicate the water level in an overhead tank or any other water container. We have posted already a Water Level Indicator and Controller using IC ULN2003.
Is there an alarm to check water level?
Generally, water stored in overhead tank is wasted due to over flow ,when the tank is full. Water level alarm using micro-controllers like 8051 and AVR are shown in previous articles.This article shows simple circuits of water level indicator with alarm.