This handy, pocket-size mobile transmission detector can sense the presence of an activated mobile phone from a distance of one-and-a-half metres. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. It is also useful for detecting the use of mobile phone for spying and unauthorised video transmission. [...]
The basic operation is essentially that of 2 separate photo sensor circuits in pairs. Each separate sensor circuit has a control pot to set it’s sensitivity for bright sunlight. It is important to have a thorough understanding of the operation of the circuit in order to be successful in making the correct adjustments for acceptable [...]
S35_eng.zip 558 KB S35_ru.zip 659 KB S35i_eng.zip 633 KB SGH_2100eng.zip 466 KB SGH_2200ru.zip 1049 KB SGH_2400eng.zip 328 KB SGH_250eng.zip 954 KB SGH_600eng.zip 370 KB SGH_800eng.zip 363 KB SGH_A100ru.zip 752 KB ST7797eng.zip 2949 KB [...]
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