The metal detector circuit shown here must represent the limits of simplicity for a metal detector, yet the design works surprisingly well. It uses just. ... As shown, the metal detector gives a ...

New research published in Physical Review Letters suggests that superconducting magnets used in dark matter detection ...

Dual frequency detection is a technology utilised by the Pyronix break-glass detectors to filter through noise to focus solely on the frequencies of breaking glass, to optimise detection and generate ...

Lightning strikes are quite high energy events, and release plenty of radio frequency energy when they go off in the atmosphere. This makes them easy to detect, and the magnitude of the energy rele… ...

[IMSAI Guy] grabbed an obsolete XOR gate and tried a classic circuit to turn it into a frequency doubler.Of course, being an old part, it won’t work at very high frequencies, but the circuit is ...

GARLAND, Texas, May 15, 2020 /PRNewswire/ -- Texas-based Garrett Metal Detectors today announced the upcoming release of a new Sport Division metal detector for hobbyists, the ACE Apex multi ...

Phase-frequency detector in ECL logic. The phase-frequency detector (PFD) consists of 2 D-trigger with reset from external circuit, performed in ECL logic and multiplexer, which allow to sw... You ...

image: Compact InGaAs/InP Single-Photon Detector Module with Ultra-Narrowband Interference Circuits. view more . Credit: None. A single-photon detector (SPD) is sensitive to incidence of ...

A Band V Signal-frequency Unit and a Correlation Detector for a VHF/UHF Field-strength Recording Receiver. Monograph Monograph 44. Download ...

The working principle of this cheap and easy to build metal detector circuit consists in mixing two equal frequencies which causes a low-frequency interference. When one of the oscillators become ...