Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

diode

A part that lets current flow one way and blocks it the other.

A diode conducts from anode to cathode once forward-biased past its forward voltage, and blocks reverse current up to its reverse voltage rating.

Read the full section →