| 摘要 |
<p>PURPOSE:To faciliate the section of pull up/down of a signal line connecting selectively at least one signal line having digital signal transmitted to either of a power supply having two kinds of potentials via a resistor and a switch. CONSTITUTION:A low potential supply terminal 9 and a high potential supply terminal 8 are provided to a main body 7 and a voltage is supplied to them by an external power supply. In throwing a slide type switch 10, either voltage is applied to one terminal 11 of a resistor mount section. A voltage applied to the main body 7 is applied to the other terminal of the resistor mount section via a resistor 2. Further, this voltage is applied to a signal line 5 and a connector 5 and also a target board. Even with a signal supplied in one wire of a flat cable 14 from a main body 6 in the floating state, a correct voltage is supplied to the target board. The similar effect is attained by employing a variable resistor 12 so as to vary the voltage.</p> |
