In this paper we discuss about comparing efficiency of single phase capacitor running induction motor, 220 Volt, 30 Watt, 1370 Rpm, where the placement of speed controller is connected on source supply or main winding. This experiment is used to investigate torque, current flow, cos j, input power and efficiency from various motor speed. The result of this analysis, for two placement motor speed controller show that speed controller that is connected on main winding have 15 % more efficient than motor speed controller that is connected on source supply. The speed controller that is connected on main winding is not influence motor input voltage on auxiliary winding. This is why the speed controller that is connected on main winding can more efficient

This paper describe Flux Vector Design Using Vector Matlab on 3 Phase Inverter when torque changes. Transient response is important things for inverter because it needs optimal torque that motor shows desire performance. This condition needs flux vector design that give V/F linear comparison in transient response. The experiment was done by simulating induction motor parameters using Matlab, the result shows : Torque supply 240 - 320 Nm, in 0.005 - 0.01s range of time.

Standard test boards populated with common components including BGAs and QFPs were built with vapor phase and convection soldering technology and tested at Epic Technoligies, LLC facility. Reliability testing demonstrated that lead-free and tin-lead joints produced by vapor phase to be equally robust as those from convection reflow. The controllable, lower peak solder temperature makes vapor phase ideal for soldering complex assemblies having sensitive lead-free SMT components