Abstract: Described is a combination fastener for attaching an object to a stud extending from or an opening formed in a component. The combination fastener includes a carrier portion to retain the object and a fastener portion. The fastener portion includes a body sidewall that defines a central longitudinal axis and a hollow space configured to receive the stud. A plurality of stud-retention features are resiliently coupled to an interior surface of the body sidewall to retain the stud within the hollow space. Each of the plurality of stud-retention features are angled toward the central longitudinal axis to deflect outward from the central longitudinal axis as the stud passes through the hollow space. A plurality of panel-retention features resiliently coupled to an exterior surface of the body sidewall to retain the combination fastener within the opening.

Abstract: Process for monitoring an alternating-voltage discharge between the electrodes of a double electrode and an apparatus. The process includes measuring values of at least one of a discharge current and a discharge voltage for each half-wave within an alternating-voltage discharge period, determining a difference between the measured values of a second half-wave and the measured values of the first half-wave, and comparing the determined differences to specific tolerance values. When the specific tolerance values are exceeded by the determined differences, a power supply is reduced, whereby the discharge is at least briefly suppressed. The apparatus includes a double magnetron including first and second targets arranged to form a double electrode, and a power supply coupled to supply power to the first and second targets.