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Design and Implement of an Ultra Low Ripple Power Supply for Cathode of Microwave Tube

Jalali, Saeed | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49036 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Kaboli, Shahryar
  7. Abstract:
  8. The purpose of this Thesis is designing and constructing of high voltage power supply with very low ripple. Proposed method of this thesis is formed of two sections. In this proposed structure, in first section, structure is on basis of diodes rectifier that has been used for producing main portion of output load energy. Second section uses with aim of regulating of first stage voltage. In attention to existence of noises and available offsets in different sections of proposed circuits, model is basis of two stages structure. Sampling of output voltage by using of resistance divider for main loop of circuit has been done. So noises and offsets available in circuit act as prevented factor in decrement of output voltage ripple. In attention to small amount of ripple against noise in main loop sample, there is a necessity of using from second loop for inducting larger ripple amount, inside of control circuit. Second loop sampler is RC high pass filter. Principal task of main loop is for DC level regulation of output voltage. Task for ripple voltage decrement mainly is with second loop. It has been expected with decrement of impact of noise and offsets effect, output voltage ripple with using of two loops control circuits has smaller amount. One loop and Two loop control circuit, in simulation and using of control functions and practical implementations assessed. In attention to simulations and equations and practical implementations, proper impact of two loops control circuits in decrement of voltage ripple verified
  9. Keywords:
  10. Noise ; Power Supply ; Ripple ; Offset Concellation ; Microwave Tubes ; Antiripple

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