Compact sized SMD based FM Modules are now available to make FM stereo with USB provision. These FM modules are excellent circuit boards which can operate at 5 volt DC. It is also remote operated and the output can be connected to a power amplifier or VCD player. It has a Digital display to show the different functions like Mode, Channel, Volume etc. It also has SD card reader. It is low cost and reliable and can be wired easily. But it is necessary to know the PCB points to wire the board . This note will help you to make your FM receiver.
Fig. 3: Image of Markings on the back of the PCB
Fig. 4: Circuit Diagram for BEL 1895 Low Power Mono Amplifier
LA 4440 High Power Stereo Amplifier
Fig. 5: Circuit Diagram for LA 4440 High Power Stereo Amplifier
Filed Under: Electronic Projects