[vonPongrac] stumbled upon this handy guide, a free eBook on 50 555 Circuits, which contains many cool project ideas, including a simple metal detector circuit. It’s a very basic concept that ...

is a feedback circuit that compares the phase difference between the input reference signal and the output signal, adjusting the frequency accordingly to minimize this difference. This feedback loop ...

A fabless company in Taiwan has incorporated anti-tampering analog IP in its data center chip to ensure protection against ...

Low profile detector for applications with limited space. Around-the-clock monitoring of safes ... Continuous surveillance of sensor and electronic circuit. The GM530 recognises attacks on safes, cash ...

The di/dt detector core consists of a power supply line ... An on-chip 100GHz-sampling rate 8-channel sampling oscilloscope with embedded sampling clock generator,¡± in Int. Solid-State Circuit Conf.

One detector for all applications. Around-the-clock monitoring of safes, night deposits and automatic cash dispenser. SENSTEC sensor and micro-controller-based signal processing system. Continuous ...

[zaphod] had to research how a metal detector actually works. After reviewing the pros and cons of various approaches, the decision was made to go with a beat frequency oscillator (BFO) circuit.