Mobile Phone Detector Block Diagram. When the mobile phone is activated within the range a sound is heard through the speaker. RF Power Detector NCS5 0 NLAS4599 NLAS44599 NLAS4501 NLAS32345 MC74VHC1Gxx MC74HC1Gxx NL17SZxx NL27WZxx MBRM120 MBR0520.
A LED and buzzer are used for indication of presence of cell phone. Op-amp is configured as Frequency Detector or Current to Voltage Converter and its output is connected to a LED and buzzer using NPN and PNP transistors. Cell Phone Detector is a circuit that can sense the presence of any activated cell-phone nearby and gives an indication of activated cell-phone near around of it.
In the Schottky diode circuit the Schottky Diode is used to detect the cell phone signal as they have a unique property of being able to rectify low frequency signals with low noise rate.
Mobile Phone Block Diagram ANTENNA Memory ARM Controller DSP Audio Interface audio Codec Audio Amp Audio Amp RF. When the cell phone is triggered it transfers the signal in a sine waveform which permits through space. It can sense the activity of mobile phone from a distance of 8 meters or more. Capacitor C7 022mF is the main component which will sense high frequency RF signals.
