| 摘要 |
PROBLEM TO BE SOLVED: To provide a backflow prevention device that protects a diode and is not increased in size.SOLUTION: In a backflow prevention device, a contact of a contact mechanism part is opened/closed by a movable iron piece rotating with an application of current on a coil of an electromagnet 40 disposed on the upper face of a base 10, and a diode 29 connected in parallel to a contact of the contact mechanism part is connected in series on the output side of the coil. Specifically, both ends of the diode 29 are directly connected to connection terminals 24, 25 disposed within the base 10. |
