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More than Circuit EngineeringElectric Intensity Detector (Radiobugs Detector)
Electric Intensity Detector (Radiobugs Detector)
A device is applied for the detection of radiobugs working on frequency up to 500 MHz. The radiobug detector consists of 0.5 m isolated antenna with a diameter 5 mm; detector on the diode VD1; direct current amplifier (VT1, VT2); threshold device (DD1.1) and sound generator (DD1.2 – DD1.4). L1 – low frequency choke, winded on a ring (12x7x4 mm). A choke contains 200 coils. At approaching of detector to the source of radio-frequency the level of electric intensity begins to exceed a background and alarm indicator switching
on.
Electric Intensity Detector (Radiobugs Detector)
Literature: Magazine Радиохобби №4 1999.
added 24.02.08 01:49:32 | 
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