| 摘要 |
PURPOSE:To hold the output level of a band pass filter on the logical level without enlarging a coil by forming the coil with the wire rod of a superconducting material without an electric resistance. CONSTITUTION:The superconducting materials are used as the wire rods of a coil 11 of an HPF 1 and a coil 12 of an LPF 2, and the electric resistance of the rod wire is set at '0' regardless of the size of a wire diameter. Input signals are supplied to the HPF 1 and to the LPF 2. In the HPF 1, the signal at the low frequencies is short-circuited by the coil 11 in a superconductive condition. In the LPF 2, the signal at the high frequencies raises the impedance of the coil 12, and the transit of the signal is disturbed. |
