| 摘要 |
PURPOSE:To improve the S/N of a video signal by decreasing a stray capacity produced between the 1st stage amplifier and a surrounding member in a television camera provided with the 1st stage amplifier. CONSTITUTION:A shield case 30 having a large mounting space is provided adjacent to a magnetic shield cap 11 shielding magnetically the outer circumference of a target 5 and the 1st stage amplifiers 1 and 2 are contained in this case 30. Further, the stray capacity produced between the 1st stage amplifiers 1, 2 and the surrounding parts by connecting a target conductor 6 and the 1st stage amplifiers 1, 2 by a lead wire 31 having a thin diameter. |
