| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit for preventing a simultaneous on action of relays in a relay drive device which can inexpensively prevent a simultaneous on action with reliability.SOLUTION: In the relay drive device having two one-way conduction drive relays 1, 2 and drive control means 3 for outputting two pulse control signals to be input into the two one-way conduction drive relays 1, 2, respectively, the two pulse control signals from the drive control means are individually output high level or low level signals, and are controlled such that when one is at the high level, the other is at the low level, the two one-way conduction relays 1, 2 each have one signal line 5a, 5b that must be prevented from switching on simultaneously, and output terminals of first and second logic elements 6a and 6b, into which the two pulse control signals from the drive control means are input, respectively, are connected to two junctions where the two one-way conduction drive relays 1, 2 are connected in opposite directions, respectively. |
