---
title: "Power quadrants"
question: "What are 1-, 2- and 4-quadrant power supplies?"
url: "https://nearfieldnotes.com/videos/power-quadrants/"
site: "Near Field Notes"
video: "https://nearfieldnotes.com/media/power-quadrants/full.mp4"
duration: "0:10"
date: "2026-10-23"
note: "https://nearfieldnotes.com/notes/power-quadrants/"
---

# Power quadrants (video)

What are 1-, 2- and 4-quadrant power supplies?

0:10, no sound. [Read Note 21](https://nearfieldnotes.com/notes/power-quadrants/) for the full answer, with figures, conditions and sources.

A silent animation, so it has no transcript.

---

Source: https://nearfieldnotes.com/videos/power-quadrants/