| 摘要 |
<p>A tuner for use with a television receiver having an input terminal, which is supplied with a radio frequency signal and a local oscillation signal, a mixing transistor of an emitter follower configuration for producing an intermediate frequency signal, the base of the transistor being supplied with an input signal from said input terminal, an amplifying transistor for amplifying the intermediate frequency signal, and a peaking circuit which includes an inductance connected between the output terminal of the mixing transistor and the input terminal of the amplifying transistor and a first capacitor connected between the input terminal of the amplifying transistor and a reference potential, in which a second capacitor is connected in parallel to the inductance for equivalently producing a trap circuit with the inductance .</p> |
