A simple metal detector
I can no doubt say that this is the easiest metal detector I've ever seen. At the core of which is just one chip TDA0161. You will not need to program anything - just collect and that's it. Still, its huge difference is that it does not make any noise at work, in contrast to the metal detector on the NE555 chip, which initially unpleasantly squeaks and the found metal should be guessed by its tone.In this scheme, the buzzer starts beeping only when it detects metal. Chip TDA0161 is a specialized industrial version for induction sensors. And it basically builds metal detectors for production, giving a signal when the metal approaches the inductive sensor. You can buy such a microcircuit on -TDA0161 aliexpress.com It is not expensive and it is available to everyone .
Here is the scheme of a simple metal detector
- Voltage supply of the microcircuit: from 3.5 to 15V
- Generator frequency: 8-10 kHz
- Current consumption: 8-12 mA in alarm mode. About 1 mA is able to search.
- Working temperature: from -55 to +100 degrees Celsius
Date: 26.10.2018, 10:58 / Views: 61573
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