发明名称 |
Remote control device for an amplifier trap circuit |
摘要 |
An FM trap circuit in an amplifier mounted on a roof top antenna is made operable from inside the home by providing a switch on the amplifier which is responsive to the negative half cycle in an A.C. power signal to disable the trap circuit and a switch in the home for selectively sending a full cycle A.C. power signal or a half-wave rectified signal to the amplifier.
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申请公布号 |
US4180804(A) |
申请公布日期 |
1979.12.25 |
申请号 |
US19780912155 |
申请日期 |
1978.06.02 |
申请人 |
HOCHIKI CORP |
发明人 |
NAKADA, MINORU;TAKEUCHI, TAKESHI;WATANABE, MASAKATSU |
分类号 |
H04N5/00;H03G1/02;H03J9/00;H04B3/44;H04N5/44;H04Q9/00;(IPC1-7):H04B1/10 |
主分类号 |
H04N5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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