RF Circuit
Radio Frequency Circuit
Receiver Schematic
CXA1019 FM Receiver Schematic Here is a Receiver Schematic that works on FM and AM band. A FM receiver can be built easily using only a single chip CXA1019. This circuit has been following with a PCB. FM/AM receiver operates on a DC voltage of 6 volts or uses four pieces of AA batteries. For other component specifications can be [...]
FM Broadcast Antenna
Circular FM Broadcast Antenna Diagram In the world of RF, the antenna is one system that is very important because the antenna can determine how far the signal goes. The antenna is an element which radiates the signal. Electromagnetic field signals can be polarized in a circular, vertical, and horizontal. Here is the FM broadcast antenna is circularly polarized, is [...]
Wireless FM Transmitter
USB Powered Wireless FM Transmitter Circuit Here’s a Wireless FM transmitter circuit powered from USB ports that could be used to play audio files on a standard VHF FM radio. The transmitter circuit use no coils that have to be wound. The wireless FM transmitter can be used to listen to your own music throughout your home. When this wireless [...]
FM Receiver
One Transistor FM Receiver Circuit Here’s simple FM receiver circuit for a simple super-regenerative FM radio. It is sensitive, selective, and has enough audio drive for an earphone. These designs generally have low component counts, however the design or my construction have been far from simple. FM Receiver Circuit Diagram Because the FM receiver is a super-regenerative design, component layout [...]
Emergency Radio
Crystal Emergency Radio Circuit Crystal Emergency Radio requires no power supply to operate because it uses energy from the signals it receives. Performance is – like one should expect – poor. Nevertheless, with a good antenna and proper ground, it shouldn’t be too difficult to tune to a strong AM station. While this emergency crystal radio circuit is very simple, [...]
