| 摘要 |
PROBLEM TO BE SOLVED: To cope with the case in when the power supply of an amplifier is included in a body as well as to the case in which it is supplied externally, to eliminate troublesome inventory management and also to reduce costs. SOLUTION: An amplifying part is fixedly provided in a case body 12 and also power supply part 16 is provided attacheably. The amplifying part is provided with an input-output terminal 20, to which a TV signal is inputted and an input-output terminal 21 which serves as a terminal that outputs a TV signal and also as a DC voltage incoming terminal. Also, the part 16 is provided with input-output terminals 22 and 23. The terminal 22 serves as an input terminal for a TV signal and also as a DC voltage output terminal. A connector is provided between a recessed part of the part 16 and the body 12, and the part 16 feeds direct current voltage to the amplifying part. When the part 16 is mounted on the body 12, the part 16 feeds direct current voltage to the amplifying part through the connector, and when the part 16 is removed from the body 12, direct current voltage is superimposed on a signal line and is fed to the amplifying part. |
