Metal Detector Circuit Diagram using IC CS209A
Hi, in this article, we are going to build a very simple homemade Metal Detector Circuit using IC CS209A and some common electronic components like resistors, capacitor, LEDs, Buzzer, and more.
A Metal Detector Circuit is a device that can detect the presence of metal objects near to it. The metal detector works by generating an electromagnetic field using a coil. When a metal object comes near, it disrupts the electromagnetic field, which is detected by the circuit.
In this project, we will use an IC CS209A as the core component of the metal detector. The CS209A IC makes the detection process easier and more efficient. It helps us a lot to build a functional metal detector without complex electronic components. The circuit is easy to assemble and understand, making it a great project for beginners in electronics.
The IC CS209A is specifically designed to sense metallic objects through electromagnetic induction. The IC processes the disruption happen in electromagnetic field and generate output signals to indicate the presence of metal, through an audio or visual alert.
Component List
Here, is the list of components required to build an Homemade Metal Detector Circuit,
- IC CS209A - 1 PCs
- 9V Battery - 1 PCs
- 20K Preset - 1 PCs
- 2.2nF Ceramic Capacitor - 2 PCs
- 100uH Detector Coil - 1 PCs
- 560 Ohms Resistor - 1 PCs
- 1 Kilo ohm Resistor - 1 PCs
- 6V/9V Electronic Buzzer - 1 PCs
- Indication LED - 1 PCs
Circuit Diagram
Here, you can see the Metal Detector Circuit Diagram using IC CS209A
Connection Procedure
- The OSC(pin1) and RF(pin8) of pins of the IC CS209A should be connected through the 20K Preset.
- The Detector coil is to be connected between TANK(pin2) and GND(pin3) pins of the IC in parallel with a 2.2nF Ceramic Capacitor.
- The DEMOD(pin6) pin of the IC is to be connected to the GND(pin3) in series with a 2.2nF Ceramic Capacitor.
- The OUT1(Pin4) can be used to connect the Indication LED in series with an 1 Kilo Ohm Resistor.
- The OUT2(Pin5) can be used to connect the Electronic Buzzer in series with an 560 Ohms Resistor.
- Finally, the power source e.g. battery should be connected between VCC(pin7) and GND(pin3) of the IC.
Working Principle
This metal detector circuit does most of its operation using the IC CS209A, which is designed to sense changes in a magnetic field. A coil and capacitor connected to the IC helps to create a magnetic field. When a metal object comes near the coil, it disturbs this field, causing a change in the signal. The IC detects this change through its internal circuit and then activates its output pins. One output turns on an LED to give a visual signal, and the other powers a buzzer to give a sound. The preset resistor helps set the frequency of the internal oscillator, and the circuit runs using a battery connected to the IC. This way, the circuit can detect nearby metal and alert you with light and sound.
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