| 摘要 |
PURPOSE:To prevent occurrence of the noise through a simple constitution by providing the circuits featuring the current ON/OFF control function and the waveform shaping function each to the current supply circuit along with installation of the control unit for the entire trunk. CONSTITUTION:Pattern switches P0...P3 of reverse circuit 10 are formed with the PNPN elements, and circuit 13 is provided which features the waveform function as well as the gate function to give the ON/OFF control to the current supply against current supply circuit 12. Circuit 13 can be controlled by the control signal sent from control point Q3; switches P0...P3 are controlled by the control signals sent from control points Q0...; and the entire trunk is controlled by the control signals sent from control points Q0...Q3 respectively. In this case, points Q0...Q3 must always pass through the state of ''0'' at the switching time of switches P0...P3. As a result, the noise occurrence can be prevented through a simple constitution. |
