| 摘要 |
An electrical screening arrangement for use with high frequency circuit 1 which is liable to produce interference signals is enclosed in conductive box 2. Electrically conductive tubes 4, 5 pass through a wall of the box, each tube being dimensioned as an optical waveguide having a cut-off wavelength which is less than the wavelength of interference signals and information is passed along the tubes in an optical form by means of LED's 6, 8 and phototransistors 7, 9. <IMAGE> |
