This car tracking device circuit can be used to locate car in a parking or other objects and is made up of two parts : a receiver and a transmitter.
The first part of this car tracking device circuit is an RF oscillator based on 555 timer and the second part is a sensitive receiver .
This cellular phone detector circuit can sense the presence of an activated mobile cell phone from a distance of one and-a-half meters.
If a RF signal is detected the circuit will inform you using a sound alarm (beep sound ) and a blinking LED .
This cellular phone detector circuit can detect any activity of a mobile phone: incoming or outgoing SMS , video transmission or voice transmission .
Using BH1417F FM stereo transmitter circuit can be designed a high efficiency FM stereo modulator electronic project .
This stereo FM stereo transmitter circuit use the BH1417F FM stereo transmitter IC which consists of a stereo modulator for generating stereo composite signals and a FM transmitter for broadcasting a FM signal on the air.