The scenario
Overhead Tank Water Level Indicator with Buzzer Alarm – a simple circuit to monitor water level using conductive probes and transistor switches.
What is in this drawing
Read the decisions behind it.
01
Used three NPN transistors (2N2222) for level detection
02
Implemented three separate LED indicators for low, medium, and high levels
03
Added an active buzzer activated when the high-level probe conducts
Domestic overhead tank monitoring, industrial process level indication, school/college electronics projects.
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