Method of making a radio frequency oscillator-modulator with gro

Details Method of making a radio frequency oscillator-modulator with gro Method of making a radio frequency oscillator-modulator with gro

1978-10-10

1980-07-29

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

H01R 4300

Patent

active

042143608

ABSTRACT:
A radio frequency oscillator-modulator for use in a video game includes a folded metal shield box having a slot on one of its ends with which a similarly slotted printed circuit board containing the oscillator and modulator is mated. Circuitry of the oscillator and modulator provides for great linearity and low R.F. radiation. The slot arrangement provides for effective grounding of the ground metallization of the external portion of the printed circuit board which contains the radio frequency output terminal along with the various input terminals. This portion contains ground metallization which makes very effective electrical contact with the slot of the shield box thus again containing R.F. radiation.

REFERENCES:
patent: 3781875 (1973-12-01), King
patent: 3816911 (1974-06-01), Knappenberger
patent: 4019141 (1977-04-01), Numan et al.
patent: 4149027 (1979-04-01), Asher et al.

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