01 / Intake
Conversational design intake.
Parse the spec, resolve ambiguous requirements, and chart a path forward.
Henry · by feldo
Meet Henry Your AI design partner for power electronics.
Henry works alongside power electronics engineers across the design loop. From first specification to validated outcomes.
How Henry works
Henry, grounded in physics and simulation.
02 / Physics
Physics-aware analysis and decisions.
Henry's reasoning is grounded in circuit physics, from initial sizing through results and final calls.
03 / Simulation
Validated against simulation.
Henry operates simulation engines (e.g., PLECS) on your behalf. Every result is reproducible from your inputs.
04 / Exploration
Trade-off exploration, on demand.
Sweep operating points, parts, and control strategies to see how circuit behavior shifts, without leaving the conversation.
05 / Context
Aware of your application.
Knows the derating envelopes and hard limits your design must respect across different domains.
06 / Components
Real parts, ready to source.
Works with actual catalog parts. Every proposed component can be ordered today.
Get early access to Henry.
Limited spots in our closed beta.
About Feldo
Agentic tools for fields where the work has to be right.
Feldo builds AI agents for advanced engineering. We focus on disciplines where simulation, physical validation, and engineering rigor are the work, and where “plausible” is not a passing grade. Henry, our first agent, works in power electronics. More will follow.
A few things we believe about agentic engineering tools:
Reproducible by default
An engineering tool that produces a different answer each time it is asked is not an engineering tool. Our agents’ outputs are reproducible from your brief. Same input, same answer.
Verifiable answers
Every result is traceable to its source. Engineers should be able to check the work, not take it on faith.
Engineer makes the call
Fundamental decisions go through the engineer for approval. Our agents bring options and trade-offs. They never overrule the engineer.
Honest about scope
An agent that admits what it cannot verify is more trustworthy than one that fakes coverage. Our agents aim to do a focused job correctly rather than a broad one approximately.