Parallel Energy Buffering LED Driver Achieves Electrolytic Capacitor-Less and Flicker-Free Operation
Bibliographic record
Abstract
AC powered LED drivers experience imbalanced energy, between input and output, in a half line cycle. To achieve flicker-free operation, the imbalanced energy needs to be buffered, and often by energy-dense electrolytic capacitors. However, electrolytic capacitors are also well-known for short lifespan and the limiting factor of LED drivers' life. High voltage film capacitors and Buck converter had been used in the proposed LED driver to buffer imbalanced energy. When , the extra energy is transferred from AC input directly to the high voltage film capacitors. When Pin<; PLED, the shortage energy is transferred from the high voltage film capacitors to the output by the Buck converter. The imbalanced energy goes through two times power conversion in the proposed LED driver, which is one time less than other comparable electrolytic capacitor-less designs. Therefore, an improved efficiency can be achieved. A 28W Flyback topology based experimental prototype had been built and tested to verify the proposed design.
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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) | 0.000 | 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) | 0.004 | 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".