LA1800 portable am fm radio circuit
This portable am fm radio circuit is designed using the LA1800 IC and some other external components .
The LA1800 am fm portable radio circuit needs to be powered from a 3 volt DC power supply circuit , you can use an 3 volt battery .
This portable am fm radio circuit has a low current dissipation of 5.6mA for FM band and 3.2mA for AM band .
As you can see in this circuit diagram the LA1800 manufactured by Sanyo Semiconductors , require few additional components .
Also the output signal is driven into earphone speakers , but you can use an additional speaker ( in that case you need to connect an additional small power audio amplifier ) .