Presented thesis analyses a function of the particular type of the nanopositioner with aim to suggest and construct an electronic device suitable for control of the nanopositioner slider. In presented material there is a description of the control signals and possibility of their generating in the respect of slider movement accuracy. The main goal of the thesis is to describe electronic units ranging from power supply, control processor unit part to end part that directly joint nanopositioner. There is also programme equipment for microcontroller and computer, communication description, movement measuring and calibration and draft for the close-up of the control loop for additional increase of the movement accuracy.

This diplom thesis theoretically deals about principle of pulse welding current source. Work explains operation principle of the single acting transmit converter used in realized construction and mention the others examples of converters types. Goal of the work is design individual parts of source : input filter, pulse transformer, output inductor and power semiconductors components. Thesis also contains description of the regulation circuitry of the converter, auxiliary power supply and pre-driver for power transistors. If everything will be all right prototype of the source will be assembled and measured. Results will be compared with theoretical assumptions.

This thesis is about to introduce the development of switched power supply with output voltage of 5,5 kV and power of 4,3 kW. This thesis directly follows the outputs of two previous semester projects. Main task is about to finish the development of remaining printed circuit boards and perform launching of all parts of developed power supply. Next necessary task is about to assemble a functional prototype of the supply using the developed parts, performing a series of measurement supply’s parameters and creating of technical documentation of mechanical part. There are all stages of supply’s development included in this thesis. From the first part, that describes various types of converters, through the design of all the supply’s parts, to final implementation of functional prototype. There are the results of measurement supply’s parameters at the end of this thesis.

This thesis deals with the issue of switching power supply in terms of noise ratios in the output voltage. In the theoretical part analyzes the basic principle of classical and resonant topology switching power converters in terms of output voltage ripple and switching noise. There are also some possibilities of compensation to minimize switching noise and output ripple. The second part describes the custom design a low noise switching power supply, which is composed of an active power factor corrector, power converters and ripple limiter. The main power converter is designed as an LLC resonant converter. The last part deals with the actual construction of the proposed source, its measurement and presentation of the results.

Laboratory push – pull switching power supply with symetrical output 2x0-30 V/5 A, primarily through adjustable controls (buttons, rotary encoder position) and then displayed on the alphanumeric LCD display. Management and communication device between the user and the power supply of the microcontroller ATmega32 - 16PU.

The thesis is focused on design the switching power supply according to Push-pull topology rules. The work describes basic theoretic principles of Push-pull topology with design of circuit and circuit elements.

This Master’s thesis is focused on design of voltage converter’s system operating with supply voltage of batteries. There are selected appropriate types of batteries, converter topologies and modes of their control. The specified output branches are systematically divided into three separate modules. Each module is designed in detail with focus on high efficiency. The modules are implemented and optimized. Parameter of final modules were measured and compared with correctness of design and theoretical assumptions.

This master’s thesis deals with the design of the switching power supply on the principle of high frequency converter. The goal of this thesis is construction of converter which is using GaN MOSFET transistors and SiC diodes for switching. The converter uses two switch forward power supply topology. Unusually high switching frequency was chosen for the design with power transformer with open magnetic core. The outcome of this work is functional converter which is primarily intended for educational and demonstrational purposes. Multiple parts of this converter are divided into individual blocks, which can be further used for construction of other types of switching converters.

智慧資本之思潮，源自於北歐，最早發展於瑞典，現今世界各國也相繼投入，其長足發展則在1990年後，而在知識經濟掛帥的年代，其影響到組織的創造與長期競爭優勢，已成為組織最有價值的資產及最有利的競爭武器，而良好的顧客關係就是公司價值具有重大影響的無形資產，也產生顧客資本的價值，若企業能將顧客知識整合到公司流程中，就越能滿足顧客所需要的產品及服務，讓顧客滿意度和忠誠度提高。 本研究選擇個案公司交換式電源供應器之顧客為研究對象，研究目的有四：(一)利用層級分析法找出交換式電源供應器之顧客在選擇供應商時之評選標準及相對權重(二)分析不同貢獻度之顧客在供應商評選標準之權重差異(三)分析不同貢獻度之顧客對個案公司在評選標準上之表現以作為未來顧客關係經營方案的參考(四)對現行交換式電源供應器廠商之顧客資本提出經營建言。 本研究以個案公司交換式電源供應器顧客為問卷對象，並使用層級分析法(AHP)將架構因素設計成問卷，請A、B、C、D等四群顧客依過去顧客期望因素之兩兩比較，得到各層級之各因素在個案公司做顧客期望時的權重。 第一層級研究結果發現，個案公司之四群顧客在顧客期望上，首重品質控制能力與技術設計能力，最不重視地點。 第二、三層級研究結果發現，個案公司之四群顧客在顧客期望上最重視客製化能力、售前諮詢、售後服務、價格水準、產品保證期，而最不重視策略事業關係、過去服務經驗與研究發展支出。 本研究相信，個案公司交換式電源供應器顧客期望透過層級分析法(AHP)的量化分析，找出顧客期望的各因素權重，使企業決策者不會依個人主觀及經驗臆測方式做為決策判斷，而以架構化的決策方式和權重優先次序為依據的客觀方法，相信必能提高顧客滿意度增加公司的經營績效。 / Intellectual Capital originated from North Europe and blossomed in Sweden at the early stage but now the hwole world gets involved. The real expanding was after 1990, now the knowledge-based economy taking the lead, intellectual capital would affect organization’s creative and long-term competitive advantage and also become the most valuable asset and useful weapon. Good customer-relationship is company’s intangible asset and also creates the value of customer capital. If enterprise could compile customers’ knowledge into company’s procedure, it will fulfill customers’ need and increase customers’ satisfaction and loyalty. This research is aimed in the company’s switching power supply’s customers. The main purposes for this research are as follows: 1. Using analytic hierarchy process to figure out the evaluation and relative weighted criteria when customers choosing cuppliers, 2. Analyzing the difference among customers’ who have diverse contribution weighted criteria, 3. By analyzing the difference to generate strategy for future customer relationship maintenance, 4. Offering suggestion to the company operating customer capital. This research is aimed in the company’s switching power supply’s customers with analytic hierarchy process as structure to form the questionnaire. Let A, B, C, D, four groups of customers, to compare two factors each time to get the weighted value for each customer upon each factor. The first tier research comes out that four groups of customers emplyasize quality controla nd technology design ability the most. Disregard location the most. The second and third tiers research come out that customers emplyasize custom, pre-sale consulting, after-sale service, price and guarantee the most. Disregard strategy alliance, previous service experience and RD expense. To conclude, this company could use quantification AHP to rank each customer’s expectation; rather than using subjective judgments or guessing from past experience. I believe this could enhance customer satisfaction well and improve ecompany performance.

This work deals with theory of switched power sources. There is description of the ways for connection and their practice purposes. In the next parts there are defined requirements on input supply circuit for these sources, especially for the form of output current. There are mentioned the basic connecting methods of PFC circuits and these methods modify the output current to meet the requirements of specification ČSN EN 61000- 3- 2. In the next parts there are shown simulations of PFC circuits made by Pspice application. Further is the basic description of sources construction for the sources which were used for testing and measuring. The final part deals with evaluation of the measuring on the chosen computer’s source. It compares between the manufacturer’s solutions and PFC circuit made by ourselves.