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

bench power supply

An adjustable lab power source with a current limit you can set.

A bench power supply delivers a chosen voltage and caps the current at a chosen limit, so a wiring mistake just hits the limit instead of burning parts.

Read the full section →