| 摘要 |
PROBLEM TO BE SOLVED: To facilitate ideal pattern design for an electronic circuit which includes an amplifier of high gain despite its being low lost. SOLUTION: In the main part of a television reception circuit for a digital television receiver to be used for both of an ATSC system and an NTSC system, a tuner 10, an IF circuit 50 for NTSC, etc., are formed on a main substrate A and an IF circuit 20 for ATSC is formed on a sub-BOARD B. The BOARD B is fitted vertically to the substrate A, and a shield case 90 for covering the circuit 20 is fitted onto the BOARD B if necessary.
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