| 摘要 |
A television tuner contains a mixer 1 to which a television signal or an FM broadcast signal is input and outputs an intermediate frequency signal based on the television signal or an intermediate frequency signal based on the FM broadcast signal, an intermediate frequency tuning circuit 2 for tuning to the intermediate frequency signals, and an intermediate frequency amplifier 3 for amplifying the intermediate frequency signal output form the intermediate frequency tuning circuit. The intermediate frequency tuning circuit 2 and the intermediate frequency amplifier 3 are connected to each other via switch diodes 4 and 5, the switch diodes are turned ON upon receiving the television signal and turned OFF upon receiving the FM broadcast signal.
|
