— Eflight 101

E Zone Magnetic Actuator Basics: Put simply, a magnetic actuator is what you use when a servo is too heavy or too expensive. This article takes you through the basics of how they work and possible configurations.
Winding Techniques: A step-by-step tutorial on winding small actuator coils.
Mutually centering in-surface actuators: Actuators provide more positive control if some method is used to center them. This note shows how in-surface actuators can be made mutually centering.