| 摘要 |
<p>The sensor switches array is esp. intended for control of outdoor loading tackle, such as loading boards, lifting platforms etc. The keyboard consists of a corrosion resistant conducting front plate (10) at the negative supply potential of the switching stages. It has holes for insulated sensor switches (11-15). The holes are so spaced that the bridging of two sensor switches (15, 11; 15, 12...) alloted to a switching stage by an operator hand, thus tripping a switching function, is impossible. Switching action will not be initiated by moisture or dirt. One of the sensors of each switching stage is connected to the positive supply potential. The corresponding second sensor is connected to the control electrode of the switching stage.</p> |
