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Radio circuits electronic circuits design projects

Radio circuits electronic circuits design projects and schematics various transmitters, receivers, rf amplifiers, rf boosters and other similar radio circuits.

Car tracking device circuit

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 .

Circuit Diagram: 
car tracking device circuit diagram transmitter
car tracking device circuit diagram receiver
Electronic Circuits: 

Cellular phone detector circuit

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 .

Circuit Diagram: 
Cellular phone detector circuit
Electronic Circuits: 

BH1417F FM stereo transmitter circuit

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.

Circuit Diagram: 
BH1417F FM stereo transmitter frequency selection table
BH1417F FM stereo transmitter circuit
Electronic Circuits: 

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