Mobile Phone Detector Circuit Diagram. This mobile sensor can be used to avoid the use of mobile phones in private rooms examination halls etc. It is built around lm358 ic1 and npn transistor bc548 t1.
This mobile sensor can be used to avoid the use of mobile phones in private rooms examination halls etc. The alarm continues until the signal transmission ceases. The moment the mobile phone detector detects rf transmission signal from an activated mobile phone it starts sounding a beep alarm and the led blinks.
This is useful in that places where mobile phone is prohibited like offices classroom hospitals exam hall etc.
Basically cell phone detector is a frequency detector or a current to voltage converter circuit. Circuit diagram of the mobile phone detector using lm358 is shown in fig. The alarm continues until the signal transmission ceases. Circuit diagram of the mobile phone detector.
