Pocket detector device for variable low frequency electromagnetic fields. (Machine-translation by Google Translate, not legally binding)

摘要

Detector apparatus for electromagnetic fields pocket low frequency variable, apparatus with casing (c) reduced size accordingly, characterized whereas comprising: a sensor electromagnetic field (1) fixed to the appliance housing (c); an amplifier stage (2) to raise the level of the signal detected by the sensor (1) with a control block gain (3) and a block rectifier to provide outputs a dc voltage (vd) proportional to the intensity field of electromagnetic radiation detected; a voltage source (4) for supplying a reference voltage (vref); a comparator block (5) to compare the reference voltage (vref) and tension detected (vd) and generating an output signal exceeded when the cited reference voltage (vref); a voltage controlled oscillator (6) fed by the output signal of the comparator block (5) for generating a drive signal; and warning means (7) nourished by the excitation signal produced by the oscillator (6) to generate a warning signal. (Machine-translation by Google Translate, not legally binding)