A single stage single switch power factor corrected AC/DC converter
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Bibliographic record
Abstract
This paper presents a single stage single switch isolated power converter topology to achieve a regulated DC output voltage having no low frequency components and a high input power factor. The topology is derived from the basic forward power converter, but incorporates an additional transformer winding, an inductor, and a few diodes. The proposed circuit inherently forces the input current to be discontinuous and AC modulated to achieve high input power factor. Both duty cycle and variable frequency controls are used to regulate the output voltage and to minimize DC capacitor voltage variations. Analysis of the power converter is presented and performance characteristics are given. Further, design guidelines to select critical components of the circuit is presented. Finally, experimental results on a 50 W, 110 VAC to 5 VDC power converter are given which confirm the high efficiency and high power factor features of the proposed topology.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.016 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it