| 摘要 |
Provided is a relay controller which can shorten the time from turning off a switching element until turning off a relay compared with what is conventionally possible. The relay controller comprises a relay switch in which a contact point connects a power supply to a load, and a coil is connected to the power supply; a first switching element which is connected in series to the coil; a regenerative current circuit which is connected in parallel to the coil and includes a second switching element and a diode which is connected in series to the second switching element; a first switching element control unit which turns on the relay switch by PWM control of the first switching element and turns off the relay switch by stopping the PWM control of the first switching element, and a second switching element control unit which turns on the second switching element when the first switching element is PWM-controlled and turns off the second switching element when the PWM control of the first switching element is stopped. |
