How does a metal detector circuit work?
When the LC circuit detects any resonating frequency from any metal which is near to it, electric field will be created which will lead to induces current in the coil and changes in the signal flow through the coil. When the metal is detected, the LC circuit will have changed signal.
What is metal detector project?
The main aim of the project is to detect the metal near by to the sensor. Whenever the metal is brought near the sensor (inductor) a buzzer is produced from the speaker and whenever the metal is removed the sound is switched off.
What is the principle of metal detector?
The operation of metal detectors is based upon the principles of electromagnetic induction. Metal detectors contain one or more inductor coils that are used to interact with metallic elements on the ground.
What is the use of metal detector?
A metal detector is an instrument that detects the presence of metal nearby. Metal detectors are useful for finding metal inclusions hidden within objects, or metal objects buried underground. They often consist of a handheld unit with a sensor probe which can be swept over the ground or other objects.
How do you make a metal detector circuit?
This simple circuit consists of the following parts;
- Resistor – 3.3 k ohm – 1 nos.
- Resistor – 2.2k ohm – 1 nos.
- Resistir – 68ohm – 1 nos.
- Capacitor – 10uF/16V – 1 nos.
- Capacitor – 10pF – 1 nos.
- Capacitor – 100pF – 1 nos.
- Battery – 6V.
- NPN transistor – BC548 – 1 nos.
How many types of metal detectors are there?
Metal detectors are categorized based on how they are used and the items they detect. There are three main types of metal detectors: Very low frequency (VLF) detectors, pulse induction (PI) detectors, and specialty detectors.
Do metal detectors detect all metals?
Metal detectors detect iron, nickel, copper, brass, aluminum, tin, lead, gold, silver and bronze. General-purpose metal detectors can find buried metal objects such as jewelry, coins and other metal objects. “Discrimination” is a process that distinguishes between different metal targets or alloys.
How is metal detector made?
A metal detector contains a coil of wire (wrapped around the circular head at the end of the handle) known as the transmitter coil. When electricity flows through the coil, a magnetic field is created all around it. As you sweep the detector over the ground, you make the magnetic field move around too.
What are the different types of metal detectors?
There are three main types of metal detectors: Very low frequency (VLF) detectors, pulse induction (PI) detectors, and specialty detectors.