The engineering workspace for electronics designers

Stop guessing component values or taking black-box maths on trust. NeoCircuits Lab provides interactive design tools that show full mathematical derivations, solve backwards from target constraints, and output standard E6 through E192 preferred values ready for your bill of materials.

  1. 1Build the networkAdd parts in series or parallel, nested as deep as you like.
  2. 2Solve in either directionSolve for the equivalent, or for the one part you are missing.
  3. 3Finish on a part you can orderEvery result lands on a real E6 to E192 value, with its error.

Circuit fundamentals

The arithmetic every design leans on, whatever it is for.

Power and semiconductors

Driving, switching and regulating — where parts get hot and die.

Layout, signals and reference

Getting a design onto a board, and the numbers you look up doing it.

Try our calculators

Passive networks — pick the component type, then how the parts are arranged.

SeriesParallelMixedResistanceohmsSeriesR₁ + R₂Parallel1 / (1/R₁ + 1/R₂)Mixedseries + parallelCapacitancefaradsSeries1 / (1/C₁ + 1/C₂)ParallelC₁ + C₂Mixedseries + parallelInductancehenriesSeriesL₁ + L₂Parallel1 / (1/L₁ + 1/L₂)Mixedseries + parallel