This portable, pocket-sized mobile transmission detector can detect the presence of an activated mobile phone from a distance of one and a half meters.
The mobile transmission detector is designed for convenience and portability, making it an ideal tool for various applications, including security and privacy monitoring. The device operates by utilizing radio frequency (RF) detection technology, which allows it to sense the electromagnetic signals emitted by active mobile phones.
The circuit typically consists of a high-gain RF amplifier to boost the weak signals received from mobile devices, followed by a demodulation stage that converts the RF signals into audible alerts. An integrated microcontroller may be employed to process the signals and control the output indicators, such as LED lights or audible alarms, which inform the user of the detected mobile phone's presence.
Power supply for the device can be provided by a compact battery, ensuring it remains lightweight and easy to carry. The PCB layout should be designed to minimize interference and optimize signal reception, with careful consideration given to the placement of components to enhance sensitivity and range.
Overall, the mobile transmission detector serves as a practical tool for individuals seeking to monitor mobile phone activity in various environments, providing a simple yet effective means of detection within a specified range.his 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 ca.. 🔗 External reference
The proximity sensor operates on the principle of emitting a beam of modulated infrared light from the LED2 emitter diode and detecting reflections from objects that come into the path of the beam using a photodiode detector, Dl. The...
This is a linear frequency modulation (FM) detector circuit. This circuit is commonly utilized in telemetry applications and a wide range of analog communication systems. The primary component of this circuit...
The linear FM detector circuit is designed to demodulate...
The circuit utilizes a dual operational amplifier integrated circuit (IC), specifically the 1458, which contains two separate op-amps within a single package. In this configuration, the first op-amp functions as a voltage follower, directing its output to charge capacitor...
The IR detector (IC3) controls an LM 7555 CMOS timer (IC2) operating in monostable mode. When the beam is interrupted, IC2 is triggered, and its pin 3 output goes high for approximately half a second. This action extinguishes LED1...
The RE46C140 circuit can be utilized to design a simple smoke detector alarm with minimal external electronic components. The RE46C140 integrated circuit (IC) is a low-power CMOS photoelectric smoke detector IC that encompasses all necessary features for a photoelectric...
A Very Simple "Beat Frequency Oscillator" type of Metal Detector. These are about the Simplest of all Metal Detector types, But still quite useful for many Detecting applications. And although this one is particularly simple, it works very well.
The...
We use cookies to enhance your experience, analyze traffic, and serve personalized ads.
By clicking "Accept", you agree to our use of cookies.
Learn more