Abstract: Leaderboard with irregularity flags in an exercise machine system. In one aspect of the disclosure, a method may include executing a video workout program on first and second exercise machines, monitoring first and second performance parameters of first and second users during the execution of the video workout program, displaying a leaderboard which displays and ranks first and second performance indicators of the first and second users based on the first and second performance parameters, detecting an irregularity in the first performance parameters of the first user, and updating the leaderboard to display an irregularity flag associated with the first performance indicator of the first user to indicate the irregularity in the performance of the first user during the workout.

Abstract: A bipolar junction transistor (BJT) includes a silicon carbide (SiC) collector layer of first conductivity type, an epitaxial silicon carbide base layer of second conductivity type on the silicon carbide collector layer, and an epitaxial silicon carbide emitter mesa of the first conductivity type on the epitaxial silicon carbide base layer. An epitaxial silicon carbide passivation layer of the first conductivity type is provided on at least a portion of the epitaxial silicon carbide base layer outside the silicon carbide emitter mesa. The epitaxial silicon carbide passivation layer can be configured to fully deplete at zero device bias. Related fabrication methods also are disclosed.