Circuit

Who Circuit is for

For electrical engineers and students doing the small repeated calculations that sit between reading a datasheet and committing to a design, currently living in a spreadsheet nobody trusts and everybody copies.

What Circuit does

Circuit does filter design with real component values, plots Bode magnitude and phase so you can see what a filter actually does rather than trusting a cutoff number, and converts between units and decibels — a conversion that is easy and easy to get wrong in the wrong direction. It is deliberately stateless: nothing is saved, so there is nothing to organise, nothing to lose, and no stale saved calculation to mislead you six months later.

• →Filter design with component values
• →Bode magnitude and phase plots
• →Unit and decibel conversion
• →Stateless — nothing to save or lose

How Circuit works

1. 01

   Pick the calculation

   Filter design, Bode plot, or unit and decibel conversion.

2. 02

   Enter your values

   Real component values and target specifications.

3. 03

   Read the result and the plot

   Magnitude and phase, because a cutoff frequency alone hides the behaviour either side of it.

4. 04

   Use it and move on

   Nothing is saved. There is no file to manage and no stale calculation to mislead you later.

What Circuit does not do

Circuit is stateless by design, so nothing persists: no saved designs, no project history, no export of a session. It covers filter design, Bode analysis and conversions rather than general circuit analysis — it will not solve an arbitrary network, simulate transients or do anything with semiconductors. It calculates and does not design: choosing a topology is yours.

Common questions

Works well with