CircuitLab is a free, web-based tool for creating schematics: it’s dead simple to place resistors, capacitors, batteries and way more onto the drawing board and connect it all together. You can also ...

CircuitLab is coming up on its one year anniversary, and the startup (now part of Y Combinator’s winter 2013 cohort) now boasts 70,000 monthly active users, who run an average of one circuit ...