Input circuit of VHF television set tuner

Details Input circuit of VHF television set tuner Input circuit of VHF television set tuner

1975-09-15

1977-05-10

Griffin, Robert L.

Tuners

Tuner unit with electromagnetic operator

Predetermined center frequency selector

325489, 334 15, H04B 118

Patent

active

040231062

ABSTRACT:
In an input circuit of a VHF television tuner tunable to the frequencies of a desired channel by varying a d.c. potential applied to a plurality of varactors provided therein, an impedance matching within the input circuit is carried out by adjusting the ratio of inductance of inductive elements provided for selecting the desired channel, and also one of the inductive elements is connected to a capacitor forming a wave trap therewith.

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patent: 2591081 (1952-04-01), Lyman et al.
patent: 3162809 (1964-12-01), Yax
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patent: 3628152 (1971-12-01), Carlson
patent: 3727140 (1973-04-01), Nieto et al.
patent: 3794924 (1974-02-01), Furuya et al.
patent: 3903487 (1975-09-01), Maier

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