The JC-CA300 handheld Aerosol particle counter is designed and developed based on light scattering principle. The JC-CA300 counter is composed of optical sensor
In Japanese "e-government" policy, called "e-Japan", the "administrative document management system" is functioning as information searching systems. On the oth
Sampled SPWM is an excellent VVVF method of motor speed control, meanwhile the harmonic components of the output wave impairs its applications in practice. A de