Open EMC is an open-source initiative for building transparent, local-first engineering tools that help teams explore EMC risks before the lab. The first project is EMC-Assist — a conducted-EMI workflow assistant for LTspice-based simulations.
Independent open-source initiative. Results are engineering diagnostics, not certification.
EMC problems rarely come from the ideal schematic. They come from layout parasitics, return paths, cables, filters, switching edges, and measurement setup. Open EMC exists to build transparent tools that make those assumptions visible earlier — tools you can inspect, adapt, and run on your own machine.
The status quo finds EMC trouble at the worst possible time: a failed scan late in the program, when every fix is a re-spin. We think the parasitics, resonances, and filter trade-offs that drive that outcome can be surfaced — as hypotheses to test — long before the chamber is booked.
EMC issues surface at the end of a program, where every iteration is expensive and schedule-critical.
A clean schematic omits the layout parasitics and return paths that actually shape conducted emissions.
Chamber time and re-spins compound. Each unguided guess is hours of bench work.
Tools that hide their assumptions can't be trusted, adapted, or learned from. Engineers need to see the working.
A small set of commitments that every project under the initiative is held to. They constrain what we build — on purpose.
The engineering core is open and inspectable. You can read exactly how a value is estimated, where it comes from, and where it's an assumption.
Simulations run on your machine. Your schematic, netlist, and results stay local unless you explicitly choose to send a redacted summary.
Every estimate shows its working — where a value comes from, the uncertainty around it, and where it's an engineering assumption rather than a measurement.
No bundled scraped knowledge dump. You index the sources you're legally allowed to use; the tool never hides where guidance came from.
The goal is risk reduction before the lab. Every result is framed as an engineering hypothesis that requires laboratory verification.
Deterministic calculation and simulation are the source of truth. AI assists — it explains, retrieves, and organizes, but never replaces the working.
The first concrete tool under Open EMC. A short introduction — the full workflow, features and getting-started live on the project page.
Model PCB parasitics, generate LISN- and cable-aware LTspice testbenches, compare EMI filter variants, parse .raw/.log results, rank variants, and document risks before the lab.
Full workflow, features, privacy model and getting-started live on the project page.
LTspice is user-supplied and runs locally — never bundled, hosted, or modified. Results are pre-compliance diagnostics, not certification.
Open EMC treats AI as an assistant, not an oracle. Recommendations should be traceable to calculations, simulation results, cited sources, or explicit engineering assumptions.
Every recommendation points to a deterministic calculation, a simulation result, or a clearly-labelled assumption — not a confident guess.
Knowledge carries a source or is flagged as an engineering estimate. Outbound payloads are redacted; your schematic and netlist stay local.
AI proposes; the engineer decides. Deterministic calculation, simulation, and human review remain central to every result.
Where the initiative is heading. Directional, community-shaped, and deliberately without dates — the order and scope will follow what's useful.
The conducted-EMI workflow assistant. The first and current focus of the initiative.
Curated, source-cited EMC rule sets you can index locally — bring-your-own, never a bundled scrape.
Open, reproducible reference cases that show where simulation predictions hold up against measurement — and where they don't.
Earlier surfacing of loop area, return paths, and stack-up risk as sourced hypotheses for review.
Better-characterised detector modes for pre-compliance diagnostics — explicitly not a certified receiver.
Teaching material that helps engineers build intuition for where conducted-EMI risk comes from.
Directional only — nothing here is a commitment or a dated promise.