water level indicator
over flowing of water from the overhead tank
can be prevented by the implementation of this circuit.
This circuit indicates the amount of water in
the overhead tank during the water filling operation of the motor.when the
water is 25% filled a red led glows,50% filled a blue led glows,75% filled a
green led glows and when it is 99% filled the buzzer beeps up.
The position of the leds and buzzer can be
adjusted accordingly by the circuit implementer by fixing the wires at the
desired place.
This circuit is made and tested by me and it
works,i have established it in my home and it is working fine.
Here i have used a 555 timer for beeping the
buzzer and 6v adapter supply for power and a k buzzer.
specifications:
1 NE555 timer
3 BC548 transistor
3 leds(red,blue,green)
1 K buzzer
resistors- 1pc 100k
1pc 1k
3 pc 220k
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the circuit was made by me for college
project in 2nd yr of my B.tech
it was very nice to play with leds and
buzzer,
the sound of the buzzer can be increased by
increasing the resistor 100k to more higher value.
for any further information on this project
or any problem please comment below or email me to ratan.singh@ieee.org