A novel concept of employing current source inverter in valley fill electronic ballasts with dimming capability and low crest factor
Bibliographic record
Abstract
A new concept of using current source resonant inverter in passive valley fill dimming electronic ballast with variable frequency control is presented in this paper. The advantage of using a current fed resonant inverter in the proposed power circuit is that it provides isolation to the driver circuit without the use of any isolation devices. When the proposed inverter is cascaded with the valley fill circuit to achieve power factor correction, the input inductors of the current source inverter introduce a new operating mode that is able to shape the input line current to achieve high power factor. A simple modified 555 timer is used in the variable frequency controller to continuously regulate the lamp current by changing the switching frequency of the resonant inverter. As a result, dimming operations and low lamp crest factor are achieved with high power factor to be maintained. A detailed description on the operating principles of the proposed circuit is given in this paper. Powersim (PSIM) simulation and experimental results are presented to highlight the performance of the proposed circuit for a 20W compact fluorescent lamp.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
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) | 0.000 | 0.000 |
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 teacher head, 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".