How to make a water level indicator for a water tank at home

How to make a water level indicator for a water tank at home

Simple Water Level Indicator Without IC

Circuit Diagram

Water tank Level diagram

Circuit Components

  1. Transistor BC557-05pcs [See Buy Click Amazon]
  2. 10k Resistor-05pcs [See Buy Click Amazon]
  3. 100R Resistor-05pcs [See Buy Click Amazon]
  4. Red Led 3mm-02pcs [See Buy Click Amazon]
  5. Green Led 3mm-03pcs [See Buy Click Amazon]

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Components used to water level indicator:

  1. BC557 (PNP) Transistor
  2. Transistor BC557

    BC557 is a PNP transistor hence the collector and emitter will be closed (Forward biased) when the base pin is held at ground and will be opened (Reverse biased) when a signal is provided to the base pin.

    Transistor BC557 pinout

    Transistor BC557 Features

    1. Bi-Polar PNP Transistor
    2. DC Current Gain (hFE) is 300 maximum
    3. Continuous Collector current (Ic) is 100mA
    4. Emitter Base Voltage (VBE) is 6V
    5. Base Current(IB) is 5mA maximum
    6. DC Current Gain (hFE) is 800 maximum
    7. BC557 as Relay Driver
    8. BC557 as LED Driver
    9. BC557 as Amplifier

  3. 10k Resistor
  4. Resistor 10k ohm

    Carbon Film Resistor.Value: 10k Ohm Wattage: 1/4W, Approximate Maximum Current: 21.13mA, Tolarence: ±5% Durable and easy to install small, low noise, precise and stable performance.Long service life.10k Ohm Resistor Color Code: Brown-Black-Orange-Gold or Brown-Black-Black-Red-Gold.

  5. 3mm Red LED
  6. Red LED

    Light Emitting Diode (LED) Indicator lamps are a type of LED (Light Emitting Diode) lamp used to Display When a Change Occurs in an Electrical Circuit. When Something has Malfunctioned in an Electrical System, a red or Orange Light light-emitting diode Indicator Lamp may be used to alert a Worker. LED Indicator Lamps Usually consist of a single Bulb. Pilot lights and Light Emitting Diode indicator lights Indicate Lights for Machines or Instruments and they can also be built into Switches. They Provide Solutions for a Variety of Requirements and Are ideal for Highly Reliable Indications.

Frequently Asked Questions:
What is the maximum Collector-emitter voltage of Transistor BC557?

Transistor BC557's maximum Collector-emitter voltage is 45 Voltage.

What is the maximum Collector-Base voltage of Transistor BC557?

Transistor BC557 maximum Collector-Base voltage is 50 Voltage.

BC557'sWhat is the maximum Collector current(Ic) of Transistor BC557?

Transistor BC557 maximum Collector current(Ic) is 100 mAmp.

What is the maximum watt of Transistor BC557?

Transistor BC557's maximum watt is 500 mWatt.

Video: Circuit Test

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