## Tuesday, July 11, 2023

In this circuit, we are going to show you how to build a voltage level indicator with zen-er diodes. In this project we have used 4 zen-er diodes of different powers to make a perfect voltage level indicator.

A normal diode acts as a short circuit in forward bias condition while in reverse bias condition, it acts as a open circuit. A Zener Diode has a breakdown when a certain voltage level is reached. The voltage that pass through the zener diode  is called the breakdown voltage of the zener diode. If a zener has a breakdown voltage of 5.1 V, after 5.1 V or greater is applied to it, it will cross the voltages which power on a load.

WORKING - This simple transistor-based water level indicator circuit is very useful to indicate the water levels in a tank. Whenever tank gets filled, we get alerts on particular levels. Here we have created 4 levels (low, medium, high and full), we can create alarms for more levels. We have added 3 LEDs to indicate initial three levels (A, B, C), and one Buzzer to indicate FULL level (D). When tanks gets filled completely we get beep sound from Buzzer.

In this circuit, we are going to show you how to build a voltage level indicator with zen-er diodes. In this project we have used 4 zen-er diodes of different powers to make a perfect voltage level indicator.

A normal diode acts as a short circuit in forward bias condition while in reverse bias condition, it acts as a open circuit. A Zener Diode has a breakdown when a certain voltage level is reached. The voltage that pass through the zener diode  is called the breakdown voltage of the zener diode. If a zener has a breakdown voltage of 5.1 V, after 5.1 V or greater is applied to it, it will cross the voltages which power on a load.

WORKING - This simple transistor-based water level indicator circuit is very useful to indicate the water levels in a tank. Whenever tank gets filled, we get alerts on particular levels. Here we have created 4 levels (low, medium, high and full), we can create alarms for more levels. We have added 3 LEDs to indicate initial three levels (A, B, C), and one Buzzer to indicate FULL level (D). When tanks gets filled completely we get beep sound from Buzzer.