| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a cost increase from an increase in the number of switches. <P>SOLUTION: A switch circuit comprises at least: a reference voltage division circuit connecting a constant voltage source Vcc to a ground via a series connection of resistances R1 and R4; a first combination switch connecting the constant voltage source Vcc to the ground via a series connection of switches SW4 and SW1; and a second combination switch connecting the constant voltage source Vcc to the ground via a series connection of switches SW5 and SW2. The junction of the resistances R1 and R4 of the reference voltage division circuit is connected to the junction of the switches SW4 and SW1 of the first combination switch, and the junction of the switches SW1 and SW4 of the first combination switch is connected to the junction of SW5 and SW2 of the second combination switch via a connecting resistance R2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
