| 摘要 |
PURPOSE:To eliminate to become OFF state except the OFF position at the input control time by providing a conductive pattern for connecting a fixed resistor in parallel with a resistance pattern, and extending the pattern itself or a resistance pattern to the lowest input setting position. CONSTITUTION:A slider 14b is contacted with a conductive pattern PD and a common conductive pattern PC at the lowest input setting position, a fixed resistor R13 becomes connected and the lowest input setting state. When sliders 14a, 14b are slid and shifted to input variable control, the slider 14b is always contacted with the pattern PD, and the slider 14a is shifted in the state to the state that is contacted with the pattern PR. In other words, it is shifted from the state that only the resistor R13 is connected to the state that a variable resistor VR1 and the fixed resistor T13 are connected in parallel. |
