| 摘要 |
PROBLEM TO BE SOLVED: To provide a small power-saving relay device.SOLUTION: A relay control circuit 10 comprises: a time-constant circuit 20 having a capacitor C1 and a resistor R2, and outputting a rush current by applying a voltage; and a switching element Tr1 turned on for a period of time by the rush current outputted from the time-constant circuit 20 according to a time constant τ defined by the capacitor C1 and the resistor R2. A relay section 30 comprises an electromagnet having a coil L, and a contact section for opening/closing a contact point by the electromagnet, so as to keep a condition that while power is inputted and the switching element Tr1 is turned on, the contact section is driven, and while the switching element Tr1 is turned off, the contact section is driven at consumption power smaller than that when the switching element Tr1 is turned on. |
