National Formosa University is a technical university located in Huwei District, Yunlin County, Taiwan. It is the only university in Taiwan to include the historical name of Formosa in its title. NFU was established in Huwei Township in 1980 as the Central Party Affairs School.National Formosa University is organized into four colleges: the College of Engineering, the College of Electronics and Information, the College of Management, and the College of Applied Arts and science. These four colleges provide 19 undergraduate, 18 postgraduate, and 2 doctorate level study programs. The Research and Services Headquarters was formed in August 2007 to manage four research centers and two multi-purpose laboratories. The aim of these bodies is to organize academic resources and provide a platform for industry-academia cooperation. The research centers focus on technical services. They are the Energy Science and Technology Center, the Micro-Electronic Mechanical System Design and Application Center, the Opto-electronic and Display Technology Center, and the Precision Mechanical Device Development Center. The two research laboratories are the Micro/Nano Science and Common Technology Laboratory and the Ultra High Precision Machining Laboratory. Wikipedia.
National formosa University | Date: 2011-03-23
An alternating current chopper circuit with low noise is disclosed. The circuit includes a switching circuit, a first freewheel circuit, and a second freewheel circuit. The switching circuit has a control switching unit, which turns on and or off accordingly to a control signal. The first freewheel circuit and the second freewheel circuit are for providing a current-conducting path to the motor, when the control switching unit is turned off.
National formosa University | Date: 2011-10-28
A protein substrate includes a base having micro-passages and reaction grooves, a polyethyleneimine (PEI) fixed on the base and a specific protein fixed on the PEI. The base is modified by plasma stripper to make the PEI bonded on the base. Mixed with tyrosinase, the specific protein can stably stick on the base due to the tyrosinase bonded with the PEI. By antigen-antibody bonding specificity, the invention can quickly detect antibody in a sample able to link with the specific protein. The specific antibody can be added with targeted biotin secondary antibody, targeted avidin-peroxidase, and color producing substrate able to react with the targeted avidin-peroxidase, such as tetramethylbenzidine or 3-(4-hydroxy)phenyl propionic acid (HPPA), so as to measure a specific antibody amount.
National formosa University | Date: 2014-11-07
A power line communication control system adapted for single-wire and method thereof are provided in the present invention. The power line communication control method adapted for single-wire includes: receiving a AC voltage from a AC power wire, wherein each period of the AC voltage includes a positive half cycle and a negative half cycle to form a sinusoidal AC signal; and adjusting the positive half cycle and the negative half cycle of the sinusoidal AC signal according to a digital data to be transmit to a load circuit. The step of adjusting the positive half cycle and the negative half cycle of the sinusoidal AC signal includes removing a first component of the positive half cycle of the sinusoidal AC signal and a second component of the negative half cycle of the sinusoidal AC signal to obtain a phase cutting signal. When the digital data is a first logic, the positive half cycle of the phase cutting signal is equal to the negative half cycle of the phase cutting signal. When the digital data is a second logic, the positive half cycle of the phase cutting signal is not equal to the negative half cycle of the phase cutting signal.
National formosa University | Date: 2012-09-13
A nut for a ball screw mainly includes a nut, multiple dual-narrowed paths, multiple micro fans, a control portion, and multiple temperature sensing portions. The nut has a threaded path and the dual-narrowed paths are defined through the central axis of the nut and substantially parallel to the threaded path. Each of the dual-narrowed paths has a high-speed area and the diameter of each of the dual-narrowed paths is gradually reduced from two ends toward the high-speed area. The nut has micro fans which drive the air flows and reduce the temperature to increase the life of use and the precision of positioning.
National formosa University | Date: 2013-01-17
Provided is a method and an apparatus for purifying potassium nitrate from the solid waste produced by a chemical glass-strengthening process. In the method, the solid waste is melted into a liquid waste at first. Potassium nitrate of various purity grades can be obtained by batch processing the liquid waste through stepwise cooling processes of cooling the liquid waste to a first temperature facilitating the potassium nitrate contained in the liquid waste to be crystallized at a first rate and then cooling the liquid waste to a second temperature close to the freezing point of the potassium nitrate at a second rate that is slower than the first rate. The recovered potassium nitrate from the solid waste can be recycled and reused.