| 摘要 |
PROBLEM TO BE SOLVED: To collect flyback energy with a simple circuit configuration without requiring special control and a DCDC converter, and to reduce heat loss.SOLUTION: A solenoid spill valve control device includes: a switch (10) for supplying electric current to an upstream side of a solenoid of a solenoid spill valve from a power supply by being turned on; a switch (11) provided in series at a further downstream side than the solenoid (L1) of the solenoid spill valve, and operating the solenoid spill valve by flowing electric current to the solenoid by being turned on, during a drive period during which power is supplied to the solenoid; a diode (12) provided in parallel between the solenoid spill valve and the switch (11), and preventing backflow to the solenoid spill valve side: and a capacitor (13) provided at the downstream side of the diode (12), and collecting flyback energy of the solenoid occurring accompanying the turning-off of the switch (11). The downstream side of the capacitor (13) is connected with the same potential as the power supply. |
