| 摘要 |
<p>A switching circuit having input terminals (1,2), switching devices (3,4) and a control circuit (6,10) having a control terminal (11) is formed with unidirectionally conductive devices (8,9) connected between the input terminals (1,2) and the switching devices (3,4) and also between the input terminals (1,2) and the control circuit (6,10) so that, when voltages (V1,V2) are applied to the input terminals (1,2) the output terminal (5) is selectively put in a fixed or a floating state according to the voltage applied to the control terminal (11). <IMAGE></p> |
