Patent ID: 11904333
Assignee: CAPSTAN AG SYSTEMS, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  A  H  Y | IPC A  B  H

Claim 7:
8. A method for controlling a solenoid valve having a solenoid coil and a poppet configured to transition within the solenoid valve, the method comprising:
transitioning the poppet from a first position to a second position using a gate signal applied to a first semiconductor device coupled with the solenoid coil, wherein the first semiconductor device is controlled by the gate signal to control a coil current flowing through the solenoid coil;
enabling a flyback circuit coupled with the solenoid coil, the flyback circuit including a second semiconductor device in series with a diode, wherein enabling the flyback circuit maintains the coil current through the solenoid coil above a threshold value by recirculating the coil current through the solenoid coil, the second semiconductor device, and the diode; and
reducing at least one of a duty cycle of the gate signal and a frequency of the gate signal when the flyback circuit is enabled.