User guide
Start from index.html. The 13 laboratories run in a browser and can be used online or from an extracted download. Keep an exported copy of your work: browser saving is convenient, but it is not a portable backup.
Open the collection
For online use, open the collection website. For offline use, obtain the complete version 1.0.1 ZIP from the GitHub release and follow these steps:
- Extract the whole downloaded collection into a normal folder before opening it. Keep the delivered filenames and all files together. Opening an HTML inside a ZIP preview can prevent the collection links from working.
- Open index.html in a browser with JavaScript enabled. Use Go to the laboratories and choose a resource. You can also open a numbered HTML directly.
- Select EN, ES or GL inside the laboratory. The interfaces provide English, Spanish and Galician. On a first opening without a saved preference, they start in English; each laboratory can remember its own last language when storage is available.
- Read the model assumptions, predict an outcome, change one parameter, and explain the resulting plots and values. Choose a learning level where the laboratory offers one; higher levels reveal additional material.
- Answer the self-assessment before revealing its solution. Questions use the conditions stated in their wording, independently of the current slider settings.
- Export your work before leaving, reloading, clearing browser data or changing files. Open the downloaded export and check that your notes are present.
Use the browser's Open link in new tab action to compare laboratories. Ordinary collection links use the same tab; leaving the RMS/mean laboratory can therefore discard its unexported work.
Know what is saved
The table describes the student work retained by each laboratory. Except for laboratory 03, saving uses local browser storage when the browser permits it. Watch the saving notice in the laboratory. If it reports that storage is unavailable, work remains only while that page is open.
On a narrow screen, scroll the table horizontally to read all columns.
| Laboratory | Work retained when browser storage is available | Export student work | Export numerical data or plots |
|---|---|---|---|
| 01 · Power semiconductor devices | Investigation notes and the first-attempt self-assessment record. | Export my work → TXT; includes notes, the recorded self-assessment and selected model summaries. | Print / PDF for plots and the teaching material. |
| 02 · Control and protection in power electronics | Investigation notes and the first-attempt quiz record. | Export my work → TXT; includes notes, the recorded quiz and current model parameters. | Export model CSV in each of the 14 model blocks. |
| 03 · RMS and mean value calculation | Page only: notes, selected answers and attempt history are lost on reload or closure. | Export my work → TXT; includes current waveform settings, mean/RMS results, notes and answers. | Export notes and answers only → TXT is also available; use it if a calculation error prevents the full export. |
| 04 · Fourier harmonic decomposition | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the active Fourier model. |
| 05 · Three-phase electrical system review | Activity notes, quiz history and selected interface/model settings. | Export my work → TXT; includes activity notes, quiz history and current settings. | Export waveform CSV for voltage data. |
| 06 · Single-phase half-wave diode rectifier | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Waveforms CSV and Metrics CSV at the Advanced level. |
| 07 · Single-phase full-wave diode bridge | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the numerical model. |
| 08 · Three-phase half-wave diode rectifier | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the numerical model. |
| 09 · Three-phase full-wave diode bridge | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the numerical model. |
| 10 · Single-phase half-wave SCR rectifier | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the numerical model. |
| 11 · Single-phase fully controlled SCR bridge | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the numerical model. |
| 12 · Three-phase half-wave SCR rectifier | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the numerical model. |
| 13 · Three-phase fully controlled SCR bridge | Self-assessment selections, attempts, revealed-solution history and its reasoning notes. | Open Check your understanding, then Export self-assessment → TXT. | Export data → CSV for the numerical model. |
Laboratory 03 is the important exception: its notes and answers are intentionally held only in the open page. Export before every reload, closure or navigation away. A browser exit warning is not guaranteed.
For laboratory 05, the saved state also includes such settings as source amplitude, frequency, cursor and voltage probes. For the other laboratories, record the operating point with the numerical export or a PDF rather than relying on settings surviving a reload.
Browser work depends on the browser profile and the storage context. Moving or renaming downloaded files, changing browser or computer, clearing site data, or using private browsing can make earlier work unavailable. Local-file storage behaviour also varies between browsers. Do not expect notes or answers to transfer between an offline file and the hosted website, or between different website addresses. Export them before changing context. The existing TXT and CSV exports provide readable records; this collection does not provide a general file-import or automatic synchronisation facility.
Choose the appropriate export
TXT records preserve student notes and the self-assessment information supplied by that laboratory. CSV files preserve numerical data and the settings or provenance included by the model. In Fourier and the rectifier laboratories, a numerical CSV does not contain the self-assessment notes: export both files when you need both kinds of work.
For laboratory 06, choose the Advanced level to reach the waveform and metric CSV controls. In laboratory 02, each model has its own CSV control. Laboratory 01 and laboratory 03 provide their work in TXT rather than a separate numerical CSV.
Exports include a laboratory identifier and the internal HTML release identifier, distinct from collection version 1.0.1. Keep the generated filename to help identify the export. A date in an exported filename is the export date, not the collection publication date.
Import CSV files into a spreadsheet using comma-separated fields and a decimal point. Read the header and metadata rows for units and definitions. Some exports include extra rows at switching events, one-sided limits or distinct repeating intervals; do not assume that every time step is uniform. Undefined physical ratios can have blank entries as described by the laboratory; they should not be converted automatically to zero.
If a calculation fails, follow the on-page error message and correct the settings or use its retry control. Numerical export and application printing can be disabled until a valid result is available. Student-work exports remain available where the interface provides them; laboratory 03 has the separate Export notes and answers only control.
Print or save a PDF
Use the laboratory's Print / PDF control, then choose a printer or the browser's PDF destination. Check the preview for the chosen language, operating point, notes, questions and the available solution options. Print controls and options differ between laboratories; the self-assessment may offer Include solutions when printing and Include explanations of incorrect options.
Keep a TXT export when the answer history matters. A printed worksheet is not a replacement for every item in the electronic self-assessment record. A PDF preserves a snapshot of the display; the HTML remains the interactive resource.
This documentation page can also be printed using the browser's Print command. Browser and printer settings can change page breaks and colours.
Use the collection offline
The laboratory HTMLs contain their scripts, styling, calculations and drawings. No installation, account, server or internet connection is needed for the teaching interactions after extracting the collection. JavaScript must be enabled. Optional links to external references require an internet connection.
Keep index.html, the numbered HTMLs and the accompanying documents together. Export your work to a folder you can find, and retain those exports separately before updating the collection. Keeping a filename stable helps navigation, but it does not guarantee continuity of browser-local work.
Recover or clear work carefully
If a laboratory reports earlier saved work that could not be interpreted or no longer matches its current questions, export that work before erasing it. The recovery material may be included in the TXT export; it may need to be read manually rather than appearing as current answers.
Read the confirmation before using Erase, Delete my notes and quiz record, or an equivalent control. Resetting a circuit or waveform and erasing student work are separate actions. Export first if you need to keep the record.
Self-assessment results are for learning and practice. They are not an official course grade. The collection has no automatic submission to an instructor or learning management system; follow your instructor's submission instructions when a task requires delivery.
Find related information
Read the collection description for learning objectives and model limits, LICENSING.txt for reuse terms, and CITATION.md for citation instructions. The browser-readable documentation includes these explanatory sections. Documentation is written in English; the laboratory interfaces provide the three languages listed above.
Collection description
This collection supports university-level Power Electronics teaching through interactive explanations, calculations, plots, guided investigations and self-assessment. It is intended for students, instructors preparing demonstrations or guided activities, and independent learners with basic circuit knowledge.
Scope of version 1.0.1
The collection contains 13 laboratories and one laboratory homepage. Its topics are power semiconductor devices, control and protection, mean/RMS values, Fourier harmonics, balanced three-phase voltages, four diode rectifiers and four SCR rectifiers. The accompanying documentation page is a guide, not an additional laboratory.
The 194 authored self-assessment questions are distributed across these 13 laboratories. The question count exposed at a particular learning level can be smaller. Additional conceptual checks and investigations are provided where the laboratory offers them.
Dedicated laboratories on inverters and DC/DC converters are planned for future versions; they are not modules in this release. Some existing controlled-rectifier laboratories already discuss or calculate inverting operation under suitable circuit conditions.
Prerequisites
Learners should know Kirchhoff's laws, basic resistor/inductor/capacitor behaviour, elementary algebra and trigonometry, and sinusoidal AC signals. Mean/RMS and Fourier work benefits from basic integration and harmonic representation. The more advanced inductive and capacitive rectifier sections use circuit differential equations, switching intervals and steady periodic operation. The three review laboratories help revisit the corresponding foundations.
Common learning objectives
After appropriate study, learners should be able to identify voltage and current reference directions; distinguish peak, RMS, mean and instantaneous quantities; predict conduction paths before using a plot; relate parameters to waveforms, device currents, power and harmonics; and explain when an analytical formula applies.
The laboratories encourage a cycle of prediction, parameter change, observation and explanation. Students can use local notes and self-assessment to record that reasoning, then export a portable record. These activities support learning; local quiz results are not formal course grades.
Module inventory
On a narrow screen, scroll the table horizontally to read all columns.
| No. | File and module | Learning objectives |
|---|---|---|
| 01 | Power semiconductor devices 01 - Power Semiconductor Devices.html |
Distinguish diode, SCR, BJT, MOSFET and IGBT behaviour; interpret conduction and switching losses, drive requirements and thermal constraints. |
| 02 | Control and protection in power electronics 02 - Control and Protection in Power Electronics.html |
Explain gate drive, reference potentials, isolation, triggering, cooling, snubbers, clamps, fuses and crowbar coordination using their separate teaching models. |
| 03 | RMS and mean value calculation 03 - RMS and Mean Value Calculation Review.html |
Calculate and distinguish mean, mean square and RMS; relate RMS to resistive heating and separate DC and zero-mean AC contributions. |
| 04 | Fourier harmonic decomposition 04 - Fourier Harmonic Decomposition.html |
Construct and decompose periodic currents; interpret coefficients, phase, RMS, DC, THD, truncation and the distinction between source and output currents. |
| 05 | Three-phase electrical system review 05 - Three-Phase Electrical System Review.html |
Relate balanced phase and line voltages, subtraction polarity, phase sequence, RMS/peak values and three-pulse/six-pulse voltage envelopes. |
| 06 | Single-phase half-wave diode rectifier 06 - Uncontrolled Rectifiers - Single-Phase Half-Wave.html |
Explain single-device conduction, inductive current continuity, freewheeling, an opposing DC source, capacitor filtering and source-current distortion. |
| 07 | Single-phase full-wave diode bridge 07 - Uncontrolled Rectifiers - Single-Phase Full-Wave.html |
Follow the conducting diode pair, output polarity, load-current continuity, capacitor charging and the difference between source and output current. |
| 08 | Three-phase half-wave diode rectifier 08 - Uncontrolled Rectifiers - Three-Phase Half-Wave.html |
Follow phase ownership and the neutral return; explain three-pulse output, load branches, phase currents and harmonics. |
| 09 | Three-phase full-wave diode bridge 09 - Uncontrolled Rectifiers - Three-Phase Full-Wave.html |
Follow the conducting diode pair and six-pulse output; distinguish phase, line, device, resistor and complete output quantities. |
| 10 | Single-phase half-wave SCR rectifier 10 - Controlled Rectifiers - Single-Phase Half-Wave.html |
Relate firing delay and gate-window duration to conduction, freewheeling, load current and power. |
| 11 | Single-phase fully controlled SCR bridge 11 - Controlled Rectifiers - Single-Phase Full-Wave.html |
Explain paired SCR triggering, discontinuous/continuous current and rectifying or inverting operation under the stated load conditions. |
| 12 | Three-phase half-wave SCR rectifier 12 - Controlled Rectifiers - Three-Phase Half-Wave.html |
Relate firing delay from natural commutation to three-pulse operation, phase ownership, load behaviour and signed power. |
| 13 | Three-phase fully controlled SCR bridge 13 - Controlled Rectifiers - Three-Phase Full-Wave.html |
Explain six-pulse pair commutation, gate timing, load behaviour, harmonics and rectifying or inverting operation under the stated conditions. |
Model assumptions and limitations
The on-page definitions and assumptions govern each model. Use the offered parameter ranges and the actual active load configuration. The following overview identifies the main limits needed when interpreting or comparing results.
On a narrow screen, scroll the table horizontally to read all columns.
| Modules | Important modelling limits |
|---|---|
| 01 | Device characteristics, loss waveforms, reverse recovery, gate charge, SCR/GTO actions and IGBT tail current are simplified or illustrative models. The steady thermal network has no thermal dynamics or temperature feedback into electrical loss. A favourable result does not establish device ratings or safe operating area. |
| 02 | The separate drive, isolation, triggering and protection models each have their own scope. RC gate models omit the Miller effect and do not predict drain/collector switching times; imposed flux and fault envelopes do not establish transformer saturation or real fuse operation. Thermal networks are steady-state; snubber, clamp, coordination and crowbar examples do not constitute hardware/component selection. |
| 03 | Prescribed ideal periodic current waveforms, not a load-circuit simulation. Mean/RMS calculations use analytical expressions; plot sampling is for drawing. Heating examples use a constant 2 Ω resistor. Meter bandwidth, transients, switching loss and temperature dependence are outside the model. |
| 04 | Metrics describe the active finite Fourier reconstruction. Changing the maximum order, order filter or enabled components changes the analyzed waveform. The optional ideal reference and its complete-waveform metrics are separate. The ideal rectifier source-current presets assume sinusoidal sources, ideal diodes and a pure resistive load. |
| 05 | Ideal balanced sinusoidal voltages with a fixed U–V–W sequence, equal phase peaks and an ideal neutral reference. It constructs voltage differences and envelopes; it does not calculate load/neutral currents, power or semiconductor states. The √3 and 30° relations require the stated balance, waveform and voltage ordering. |
| 06–13 | Periodic steady-state rectifier models with prescribed sinusoidal sources; the three-phase sources are balanced. Device drops use the constant-drop option where offered. Startup, source/transformer impedance, finite commutation overlap, reverse recovery, leakage, switching loss and temperature are excluded. Ideal charging-current peaks are not safe component ratings. |
| 10–13 | SCR rectifier models assume adequate logical gate drive, zero latching/holding thresholds and zero recovery time. They explain circuit conduction rather than validate a real SCR driver. The firing-angle cosine rule needs continuous series current and its other stated conditions. A firing angle above 90° alone does not establish inversion. |
For capacitor-filter comparisons, match the circuit branch explicitly. The diode filters in 06–08 use the ideal capacitor branch. Laboratory 09 offers both an ideal branch and a branch with a small charging resistance; the controlled rectifiers use the specified resistance in the capacitor branch. That resistor is not an AC-source resistance. Match this choice, active load, voltage convention, device drops and periodic state before comparing diode and SCR circuits.
For three-phase rectifiers, the input amplitude is phase-to-neutral peak; for a single-phase bridge it is the complete source peak. The half-wave three-phase topology has a neutral return, while the full-wave bridge uses three line conductors. Laboratories 09 and 13 show all six directed line voltages by default in Source and output voltages; phase voltages have a separate toggle and are initially hidden. Display toggles do not change the physical calculation.
Distinguish the resistor current from the complete rectifier output current when a capacitor branch is active. Check the stated denominator for distortion, power factor and efficiency. An undefined ratio is not a zero result. If a laboratory offers established and zero-current-start periodic states, use its stated conditions; selecting a state does not simulate the complete startup transient.
These models support circuit reasoning within their disclosed assumptions. Real hardware also requires appropriate datasheets, parasitic and thermal behaviour, ratings, layout, insulation and experimental validation.
Languages and delivery
The laboratory interfaces are available in English, Spanish and Galician. The official collection title remains in English. The documentation is written in English. Each laboratory is a self-contained HTML and runs offline with JavaScript enabled; optional external references are supplementary.
Start from index.html and use the user guide. Notes and assessment records are saved locally when permitted in 12 laboratories; laboratory 03 keeps them only in the open page. See the guide's per-module export table. Offline and hosted storage must not be assumed to transfer or synchronise.
Prepublication verification
Version 1.0.1 corrects the publication documentation and collection labels. It retains the same educational material and application logic reviewed for version 1.0. The earlier checks below describe that review; a metadata update does not extend its browser or numerical coverage.
The recorded educational review on 6 October 2026 checked independent analytical reference cases, all 194 English self-assessment questions, and numerical/sign equivalence and actual grading across EN/ES/GL. Browser checks covered Chrome 154.0.8037.98 and Microsoft Edge 154.0.4258.53, narrow layouts, printing/PDF, actual exports, local HTTP and extracted offline use.
The later six-line/phase-visibility revisions to laboratories 09 and 13 were checked separately in Chrome 154.0.8037.98, including exports, printing and narrow/expanded views. Those specific later plot revisions have not been retested in Edge. The documentation preparation in Chrome 155.0.8059.39 checked notes and submitted-answer retention in all 13 laboratories, 14 actual TXT exports and 25 actual CSV exports against the current HTMLs. It also checked the documentation and homepage through local HTTP and extracted offline use, in light/dark layouts at widths from 320 to 1440 pixels, and their native browser PDF output.
This scope does not establish compatibility with every browser or device, a complete screen-reader audit, or formal accessibility certification. Firefox, Safari and physical mobile devices were not exercised in those reviews. Results remain subject to the model assumptions above.
Authorship and reuse
Alejandro Gómez Yepes is the named author, affiliated with Universidade de Vigo. He used ChatGPT (OpenAI) and Claude (Anthropic) as AI tools to help generate and refine the HTML resources. The acknowledgement does not imply personal assistance, collaboration or endorsement by those companies.
Original educational content, diagrams, explanatory documentation and collection metadata use CC BY 4.0; original implementation code uses MIT. The scopes are component-specific and apply within the author's rights. Student-authored work and third-party material have their own rights. See LICENSING.txt, LICENSE-CONTENT.txt, LICENSE-CODE.txt and THIRD_PARTY_NOTICES.txt.
Use CITATION.md to cite the collection and CHANGELOG.md to identify the release history. MANIFEST.json and SHA256SUMS.txt identify this package's exact file bytes. This version was released on 10 October 2026; its archived citation is 10.5281/zenodo.23284179.
Licences
Original educational content, diagrams, educational strings/questions embedded in scripts, explanatory documentation and collection metadata use CC BY 4.0. Original implementation code, CSS and structural HTML use MIT. These are grants for different components, within the author's rights. Student-authored work and third-party material have their own rights.
Both licences permit commercial reuse subject to their terms. Preserve appropriate attribution, licence links and change notices for content; preserve the MIT copyright and permission notice for code. The full legal terms govern reuse.
- LICENSING.txt: precise scopes and attribution guidance
- LICENSE-CONTENT.txt: complete CC BY 4.0 terms
- LICENSE-CODE.txt: complete MIT terms
- THIRD_PARTY_NOTICES.txt: external references and third-party terms
The code drawing a diagram is MIT; its original educational visual content is CC BY 4.0. Linked technical documents are not relicensed by this collection. See Creative Commons CC BY 4.0 and the MIT licence.
Citation instructions
The official title is Interactive HTML Learning Resources for Power Electronics. Universidade de Vigo is the author's affiliation. The author's ORCID is 0000-0002-1423-4276.
Citation for version 1.0.1
Gómez Yepes, A. (2026). Interactive HTML Learning Resources for Power Electronics (Version 1.0.1) [Interactive educational resources]. Zenodo. https://doi.org/10.5281/zenodo.23284179
This correction release is dated 10 October 2026. The version DOI identifies its exact archived files. The GitHub release supplies the identical downloadable ZIP; the website supports online use and may serve a later version in the future.
@misc{gomez_yepes_power_electronics_html_v1_0_1,
author = {G{\'o}mez Yepes, Alejandro},
title = {Interactive {HTML} Learning Resources for Power Electronics},
year = {2026},
month = {oct},
version = {1.0.1},
publisher = {Zenodo},
doi = {10.5281/zenodo.23284179},
url = {https://doi.org/10.5281/zenodo.23284179},
note = {Interactive educational resources; released October 10, 2026}
}
For a particular laboratory, cite this collection version and identify its module number and title in the surrounding text, caption or note, for example 09 — Uncontrolled Rectifiers — Three-Phase Full-Wave. An exported calculation can additionally identify its operating point and internal HTML release identifier.
Version DOI and concept DOI
The version 1.0.1 DOI identifies this archived release. Use it for a teaching intervention, calculation, comparison or other work that depends on these exact files.
The concept DOI represents the collection across its versions and resolves to the latest published version. It is suitable for a general reference to the evolving collection. It does not identify a particular file snapshot. The collection label 1.0.1 is recorded separately from Zenodo's internal version numbering. See Zenodo's version-management guidance.
Original version 1.0 and release history
Version 1.0 was first published on GitHub on 7 October 2026 and archived on Zenodo on 8 October 2026, under DOI 10.5281/zenodo.23244291. Its GitHub release, ZIP and checksums remain unchanged. The original package's Zenodo notices reflect its preparation before the archive existed; version 1.0.1 supplies the corrected documentation.
If you used the original version 1.0 files, cite that version DOI. Use this release's DOI when you used version 1.0.1. Publication dates identify each release; internal HTML revision timestamps and export timestamps identify different events.
Future releases
Reserve each new version DOI before freezing its files, then publish a new GitHub release and a new version of this same Zenodo collection. Preserve earlier archives and their citations. Dedicated inverter and DC/DC laboratories remain planned additions. See the official DOI reservation and publication-date guidance.
Attribution when reusing content or code
A scholarly citation and the reuse obligations have related but different purposes. For original educational content or diagrams, credit the author and source, link CC BY 4.0, and identify changes when adapting the material. An example for an unchanged laboratory is:
Alejandro Gómez Yepes, Universidade de Vigo. Interactive HTML Learning Resources for Power Electronics, version 1.0.1, laboratory [module number and title]. Educational content and diagrams: CC BY 4.0. Source: 10.5281/zenodo.23284179.
Fill in the laboratory's number and title. For an adaptation, add a brief description of the changes. Keep the MIT copyright and permission notice when redistributing code or substantial portions of it. The full terms and component scopes in LICENSING.txt, LICENSE-CONTENT.txt and LICENSE-CODE.txt govern reuse.
Change log
Version 1.0.1 — 10 October 2026
Documentation and publication-metadata correction. Added the reserved version DOI 10.5281/zenodo.23284179 to the homepage, citation instructions and release metadata before freezing this package. Replaced outdated current-release Zenodo notices, updated documentation and download links, and recorded the original version 1.0 archive separately.
Updated the common collection label to 1.0.1 in the homepage and all thirteen laboratory footers. Each changed HTML has a new internal revision identifier and its immediate parent hash. Filenames, model/application scripts, educational questions, browser-storage keys and export schemas are preserved. Regenerated the browser-readable documentation, manifest and SHA-256 list. The GitHub and Zenodo downloads use the identical new ZIP.
The original version 1.0 GitHub tag, release assets and Zenodo version DOI remain intact. This release adds no new laboratories. Numerical and browser checks from the original educational review retain the scope stated in COLLECTION_DESCRIPTION.md.
Version 1.0 — 7 October 2026
First public release. The collection is available through GitHub Pages and the version 1.0 GitHub release. The identical original ZIP was archived on Zenodo on 8 October 2026, under DOI 10.5281/zenodo.23244291. The original package recorded that archive as pending because it was prepared before the deposit; its archived bytes are preserved. The entries below describe preparation of this first release, not earlier published versions.
The released collection contains the homepage and 13 numbered laboratories listed in COLLECTION_DESCRIPTION.md. Their public filenames use English names and an ordered 01–13 prefix; index.html remains the homepage.
The preparation established the common collection title, author, Universidade de Vigo affiliation and version 1.0 label, repaired collection navigation, and added CC BY 4.0/MIT notices with distinct educational-content and implementation-code scopes. The AI-tool acknowledgement was retained.
The educational/functionality review on 6 October 2026 corrected saved-work recovery, calculation-failure handling and print flow, and repaired expanded-plot legend layout in the controlled rectifiers. The recorded checks covered numerical reference cases, assessment content and grading, languages, exports, notes, local HTTP, offline extraction and printing within the scope described in the collection description.
The subsequent source-voltage updates to laboratories 09 and 13 added all six directed line voltages and separate phase-voltage visibility. The default view displays line voltages and hides phase voltages. The numerical models were preserved.
The documentation preparation on 7 October 2026 (Europe/Madrid) added the user guide, collection description, citation instructions, this change log, a browser-readable documentation page, and an exact file manifest and SHA-256 list. The homepage links the documentation in EN/ES/GL. These preparation entries identify work completed before release; the first public release date is 7 October 2026.
The publication preparation added the stable website and download addresses, current release citation and publication date. GitHub deployment configuration and repository citation metadata are kept outside the downloadable collection. The original 13 laboratory files and their numerical, storage and export behavior are unchanged from the reviewed preparation.
Planned future work
Dedicated laboratories on inverters and DC/DC converters are planned for a future collection version, tentatively version 2. Additional modules and their eventual release date will be recorded when they exist and are reviewed; they are not files in version 1.0.1.
Identify an exact package
The public collection label of this package is 1.0.1. Individual HTMLs also retain internal release identifiers and parent provenance, which identify their source revisions. MANIFEST.json records the current file sizes, SHA-256 values and HTML provenance; SHA256SUMS.txt includes the manifest's own hash.
The two integrity files cannot both include their own hashes without a circular dependency. MANIFEST.json therefore inventories every package file except MANIFEST.json and SHA256SUMS.txt. SHA256SUMS.txt hashes every package file except itself, including MANIFEST.json. The manifest also records the complete expected filename set.
Regenerate both integrity files after any content or metadata edit. A checksum establishes equality with the bytes listed in this package; it does not independently authenticate the author or a download source. Keep the final released archive and its externally recorded archive checksum with the publication record.
Package files and integrity
README.md gives the document inventory and checksum instructions. MANIFEST.json records the expected filenames, sizes, hashes and HTML provenance. SHA256SUMS.txt hashes every package file except itself, including the manifest. The manifest inventories the payload and excludes both integrity files to avoid self-reference.
ZENODO_METADATA.txt records this release's publication metadata, identifiers and licence scopes. Open the Zenodo archive.