A novel SEPIC type single-stage single switch electronic ballast with very high power factor and high efficiency
Bibliographic record
Abstract
A novel SEPIC type single-stage single switch electronic ballast with very high power factor is presented in this paper. The proposed lamp power circuit combines the SEPIC converter and a single switch resonant inverter to form a single-stage inverter to power the lamp. The resulting circuit provides a compact and cost-effective circuit configuration for electronic ballast designs. By operating the SEPIC power factor corrector in discontinuous conduction mode, the average line current is in phase with the line voltage and a very high power factor is achieved at the input. In the proposed design, zero-current switching (ZCS) is achieved at the turn-on of the MOSFET to maintain high efficiency for the overall circuit. The proposed topology also allows simple gate driver to be used without the use of any isolation devices. Simulation and experimental results are provided for a design example of a 26 W compact fluorescent lamp to verify the feasibility of the proposed circuit.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".