Metal Detector Circuit Diagram Using Transistor
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The Post Explains A Simple One Transistor Metal Detector Circuit Which Is Very Sensitive And And Can Detect Any Metal From Metal Detector Detector Transistors
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There are many metal detector circuits or kits are available to built but mostly are very complicated but the circuit shown here can be built easily and can detect a metal object from 2 to 3 inches away.
Metal detector circuit diagram using transistor. A simple metal detector circuit diagram and schematic using a single transistor and a radio. This metal detector sensor project is easy to make and is an application of colpitts oscillator. As a result the batteries should last a long time. The above circuit diagram is of a low cost metal detector using a single bc548 transistor and an old radio.
The circuit can sense a soda can at a depth of six inches and metal pipes at an even greater distance. 2 x 47nf capacitors ceramic capacitor code 473 1 x 1 kω resistor 1 4 watt 1 x 330 ω resistor 1 4 watt 1 x 100 ω resistor 1 4 watt 1 x 5 kω potentiometer. Circuit diagram working explanation. Here is a simple metal detector circuit using a ca3140 ic.
The unit is powered by two 9v batteries in series. 1 x tda0161 proximity detector ic. The circuit is claimed to be tested but the difficult part in building this circuit is with winding the tapped coil. 1 x 2n2222a npn transistor.
The detector has a current draw of approximately 9 ma at 18 vdc. Surprising enough i found many metal detector circuits that work only with a help of a single transistor like the once shown below this circuit uses a single bc547 npn transistor.
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