Energizing how many coil(s) makes a stepper motor jump to a specific position and stop?

Energizing one coil in a stepper motor effectively allows the motor to move to a specific position and stop. Stepper motors operate based on the principle of sequentially energizing coils to create magnetic fields that cause the rotor to move in discrete steps. When a single coil is energized, it produces a magnetic field that pulls the rotor to align with that coil's field, resulting in a precise movement.

Stepper motors are designed for fine control of position and speed, and each coil corresponds to a specific step or position of the rotor. By controlling the energy supplied to the coils, the motor can precisely position itself and maintain that position efficiently. Energizing more than one coil simultaneously can lead to a less precise control scheme and is generally not necessary for basic step movements. Hence, energizing just one coil is sufficient to achieve the desired step position and maintain stability.