This mini electronics project is designed to educate students on creating a water tank level alarm system using commonly available NPN transistors and float switches.

Water Level Indicator Circuit With Full And Low Tank Alarm | 7 Levels | Dual Tone | Long Sensor Life

Fully Automatic Water Level Controller Circuit With Motor Dry Run Protection Without Using Microcontroller

Automatic Water Level Controller Circuit With Dry Run Protection | For Sump & Overhead Tank | Transistor Based

5 Minutes Timer Circuit To Turn Off Electrical Devices

Water Tank Full & Low Level Alarm Circuit With Momentary Switch To Turn Off The Alarm

Semi-Automatic Water Level Controller Circuit Project Using 555 Timer With Indicator

Power failure and resumption alarm and indicator circuit using 555 timer

Overvoltage and undervoltage protection circuit diagram | High and low voltage protection circuit diagram Using LM358

20 Led Chaser Circuit Without Ic 555 | How To Build A Light Chaser Circuit Using Cd4017 And Cd4013

Bаttеrу Lоw Level Indісаtоr Uѕіng tіmеr іс 555 | low bаttеrу indicator сіrсuіt 12v

6v Battery Charger Circuit With Auto Cut Off Using LM317 And BC547 | battery charging circuit with auto cut off

Battery Level Indicator Circuit Using Dual Op Amp Ic LM358 To Monitor 12V Battery

[Multi-Colour] Automatic Night Lamp Circuit Diagram Using LDR And CD4017

Stereo Bridge Amplifier Circuit Using LA4440 For Car,Desktop,Laptop

Variable Power Supply Using LM317 Voltage Regulator

Battery Monitor Circuit Diagram Using NPN Transistor BC547

Low Battery Level Monitor Using Op-Amp 741

12V CFL-LED Emergency Light Circuit Using 3525 IC | Mini Inverter Circuit

Burglar Alarm Using NPN(BC548)And PNP(SK100) Transistor. The burglar alarm circuit shown here sounds an alarm when the wire loop is broken.

Water Level Indicator Circuit Project Using IC 555 With Motor Dry Run Protection Alarm