Proportional Valve Driver Circuit at Murray Brock blog

Proportional Valve Driver Circuit. So far i found this circuit that looks pretty. I am looking to drive a current regulated proportional (solenoid) valve that needs up to 85ma @ 24v from a microcontroller. Proportional valves typically use pwm to achieve linear control, with the frequency set low enough to act as dither to improve. The force applied to the armature is proportional to the coil’s change in inductance with respect to the armature’s change in position. Proportional solenoids serve to operate pistons and valves to accurately control fuel pressure or flow. The electromagnetic force of a solenoid directly. Next is the recommended current driver circuit for the proportional solenoid valve. I am using this circuit: Problem is, this circuit only drives the valve.

Electronic LowPro proportional valve drive circuit clarification
from itecnotes.com

I am looking to drive a current regulated proportional (solenoid) valve that needs up to 85ma @ 24v from a microcontroller. Problem is, this circuit only drives the valve. The electromagnetic force of a solenoid directly. The force applied to the armature is proportional to the coil’s change in inductance with respect to the armature’s change in position. So far i found this circuit that looks pretty. Proportional valves typically use pwm to achieve linear control, with the frequency set low enough to act as dither to improve. Next is the recommended current driver circuit for the proportional solenoid valve. I am using this circuit: Proportional solenoids serve to operate pistons and valves to accurately control fuel pressure or flow.

Electronic LowPro proportional valve drive circuit clarification

Proportional Valve Driver Circuit Problem is, this circuit only drives the valve. Next is the recommended current driver circuit for the proportional solenoid valve. Problem is, this circuit only drives the valve. The electromagnetic force of a solenoid directly. Proportional valves typically use pwm to achieve linear control, with the frequency set low enough to act as dither to improve. I am using this circuit: The force applied to the armature is proportional to the coil’s change in inductance with respect to the armature’s change in position. So far i found this circuit that looks pretty. Proportional solenoids serve to operate pistons and valves to accurately control fuel pressure or flow. I am looking to drive a current regulated proportional (solenoid) valve that needs up to 85ma @ 24v from a microcontroller.

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