Metal Detector Circuit

Metal Detector Circuit In the category Metal Detectors more articles and learn more information about Metal Detector Circuit Reviews Price Specifications Features Image manuals videos Accessories All this in metal detectors for gold.

Metal Detector Circuit


This is the circuit diagram of a low cost metal detector using a single transistor circuit and an old pocket radio.This is nothing but a Colpitts oscillator working in the medium frequency and a radio tuned to the same frequency band.First the radio and the circuit are placed close.Then the radio is tuned so that there is no sound from radio.In this condition the radio and the circuit will be in same frequency and same frequencies beat off to produces no sound.This is the set up.When the metal detector circuit is placed near to a metal object the inductance of its coil changes, and so do the frequency of oscillations.Now the two frequency will be different, there will be no canceling and radio produces a hissing sound.The metal is detected.


To make L1 make 60 turns of 36SWG Tibetan Copper wire on a 1 cm PVC tube.
Powering the circuit using a rather than a battery adapter induces noise. It is always good to radio projects from battery power.
Metal Detector Circuit .
Metal Detector Circuit .

Metal Detector Circuit .

metal detector circuit using ic 555

Metal Detectors Effective In Schools

Electronic circuits that use the ic 555 Timer, A simple metal detector electronic project can be designed using a simple 555 timer circuit. As you can see in the schematic circuit, this project requires some external electronic electronic parts. This circuit detects metal and magnets. When a magnet is close the choke 10mH, output frequency…. Read Post


Metal detector circuit diagram

Circuit Boards For Kids

Metal detector circuit diagram,The metal detector is a relatively simple device, an electronic circuit that provides good sensitivity and stability. A distinctive feature of this device is the low operating frequency. Metal detector coil operates at a frequency of 3 kHz. It provides, on the one hand, and poor response to unwanted signals… Read Post

Design electronic pulse metal detector circuit

Complete Circuit Diagram Of Metal Detector

Design electronic pulse metal detector circuit,When established, the head of research of electromagnetic field which extends to the environment. On the surface of the minerals that were in the region to discuss the file, under the influence of the electromagnetic field having what is called eddy currents. These eddy currents create electromagnetic fields against their… Read Post

Pulse Induction Metal Detector Circuit

Free Metal Detector Circuit

We often associate great depth and pulse induction metal detector A PI, understand pulse induction metal detector, Pulse repetition rate (frequency of the transmitter ) with a typical pulse induction metal detector is approximately 100 Hz. Different models, Vlf Versus Pulse Induction Metal Detectors Review . Pulse Induction detectors against VLF- Pulse induction (PI) detectors….. Read Post

Simple Bfo Metal Detector Improved Circuit Design

Complete Circuit Diagram Of Metal Detector

BFO-beat frequency oscillation method. The use of metal detectors two oscillators, including the head of the search coil. Frequency compared to the cursor and displays the frequency difference between the sound signal. Hardware circuit is simple enough, reel requires strict implementation. Operating frequency of 40-500 kHz. Simple BFO method requires only a few ingredients…. Read Post

Simple Metal Detector: 8 Steps (with Pictures)

Metal Detector – Electronics Circuits & Hobby

Simple Metal Detector Circuit



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