Purpose of this study was to analyze the influence of school principals' academic supervision and teacher work commitment on teaching performance of Public Elementary School teachers in Ciamis District. The method used in this research is descriptive method with a quantitative approach. The location of this study was conducted in the SD Negeri Ciamis District with a total of 84 respondents. Based on the results of the research that has been done, it can be concluded 1) the effect of principals 'academic supervision on teacher teaching performance is in the moderate category, 2) the effect of teacher work commitment on teacher teaching performance is in the moderate category, 3) the effect of principals' academic supervision and teacher work commitment the teacher's teaching performance includes the category in the medium category while the rest is influenced by other factors. The results revealed that the school principal's academic supervision and teacher work commitment had a significant and positive effect on teacher teaching performance. The implication in this study is that the academic supervision of the principal and work commitment of the teacher performs the role and function well, it will improve the teacher's teaching performance.

This inductive equipment causes a low value of the electric power factor. The low value of the power factor (cos phi) in an electric power system is a problem that must be minimized. With a low power factor value, it will cause losses for consumers as well as for electricity producers. Power factor improvements are carried out by installing a capacitor bank in parallel with the load. The use of relays in the capacitor bank switching process can cause transient disturbances that can affect voltage quality. Air Coil is used to reduce transient interference in the switching process. Test results with the implementation of Air Coil on capacitor banks show a change in the power factor value, while the results of tests carried out at 06.00 for a 46 watt fan load experienced an increase in power factor value of 2%, 36 watt fan by 2%, 80 watt television by 1%.