Spark Chamber

Spark Chamber teaches electricity, circuits and electronics, from SI prefixes and
Kirchhoff's laws through op amps, diodes, BJTs and MOSFETs to power supplies.
Problems are generated from real component values (E12 and E24 series) and
every answer is computed and checked.

- Accepts answers the way engineers write them: 4.7k, 4k7, 4700 or 4.7 kΩ
- Wrong answers get stepped hints, then a worked solution, and common slips
(a prefix off by 1000, hertz for radians per second) are named
- Each topic is seen through circuit, physics, signals and math lenses
- A circuit simulator, a formula sheet and spaced review of mastered topics

Everything stays on your computer: no account, no network access, no analytics.
Learning is free: no subscription, no ads, no mascot, no streak quests. Just the engineering.