3 ms·

In this world of AI can we not get a summary?

quenix 1y ago
In this case, I think the interesting part is the video itself / the process. He breaks down a very inaccessible product and explains how it all works.
danso 1y ago
fwiw YouTube has an experimental “Ask about this video” button. This is the verbatim output: Here's a summary: • The charger was donated by a viewer and stopped working despite seemingly good construction. 0:02 • It has two USB-C ports (100W each) and one USB-A port (12V, 22.5W). 0:25 • When plugged in, none of the ports output voltage. 1:00 • The outer box is filled with resin, making it difficult to open. 1:10 • Open, the charger reveals several circuit boards in a sandwich-like design. 2:57 • A shorted rectifier bridge (3:49) and a shorted capacitor on the USB-C output control circuitry (7:20) were initially suspected. 3:49, 7:20 • Further investigation with a thermal camera pinpointed a specific communication/voltage conversion chip as the source of the short. 13:11 • This chip controls the gate of the MOSFETs used in the synchronous rectifiers and DC-DC converters. 14:00 • The main transformer is a hybrid flyback design with a unique AC input and half-bridge rectifier. 17:15 • The short was traced to the capacitor's pins on the same side of the board, suggesting a potential multi-layer board issue. 12:19, 12:41 • The video ends with a cross-section view of the transformer and measurements of some donated 18650 battery cells. 18:46, 20:35 Essentially, the video demonstrates a complex charging circuit and troubleshooting process, highlighting the potential for multiple failure points in high-power chargers.
- whiteboardr 1y ago
  Where?
  - AStonesThrow 1y ago
    Certainly! I shall describe the UI in English: good luck First, tap on the dooblydoo to expand it. Find the powder blue/violet, four-pointed star that represents Google Gemini. Tap the down-chevron to expand summary. Also take note of various “explain” lozenges outlined in multicolor. These are quick-action queries for Gemini. Have fun! [The production style exactly reminds me of predecessor “Play With Junk” who undertakes massive teardowns of spectacular enterprise-class Unix machines. https://youtube.com/@playwithjunk?si=4-hu0iIA7bGovnGe https://youtube.com/@playwithjunk?si=4-hu0iIA7bGovnGe]
  - elaus 1y ago
    As always with new Google products: available only in certain countries...
    - Gigachad 1y ago
      At Google, something as trivial as changing the website theme is enough to trigger legal action so it’s not surprising they roll stuff out carefully.
- auguzanellato 1y ago
  the short was actually traced to one of the two PD controllers, the other stuff seems kinda right
Rebelgecko 1y ago
This video dives deep into a faulty 120W GaN charger, exploring its intricate design and uncovering the source of the failure. The video details the process of disassembling the charger, revealing its complex circuitry and identifying various components like the GaN transistors and the printed transformer. The investigation concludes with a surprising discovery about the cause of the malfunction.

In this case, I think the interesting part is the video itself / the process. He breaks down a very inaccessible product and explains how it all works.

danso 1y ago

fwiw YouTube has an experimental “Ask about this video” button. This is the verbatim output: Here's a summary: • The charger was donated by a viewer and stopped working despite seemingly good construction. 0:02 • It has two USB-C ports (100W each) and one USB-A port (12V, 22.5W). 0:25 • When plugged in, none of the ports output voltage. 1:00 • The outer box is filled with resin, making it difficult to open. 1:10 • Open, the charger reveals several circuit boards in a sandwich-like design. 2:57 • A shorted rectifier bridge (3:49) and a shorted capacitor on the USB-C output control circuitry (7:20) were initially suspected. 3:49, 7:20 • Further investigation with a thermal camera pinpointed a specific communication/voltage conversion chip as the source of the short. 13:11 • This chip controls the gate of the MOSFETs used in the synchronous rectifiers and DC-DC converters. 14:00 • The main transformer is a hybrid flyback design with a unique AC input and half-bridge rectifier. 17:15 • The short was traced to the capacitor's pins on the same side of the board, suggesting a potential multi-layer board issue. 12:19, 12:41 • The video ends with a cross-section view of the transformer and measurements of some donated 18650 battery cells. 18:46, 20:35 Essentially, the video demonstrates a complex charging circuit and troubleshooting process, highlighting the potential for multiple failure points in high-power chargers.

whiteboardr 1y ago
Where?
- AStonesThrow 1y ago
  Certainly! I shall describe the UI in English: good luck First, tap on the dooblydoo to expand it. Find the powder blue/violet, four-pointed star that represents Google Gemini. Tap the down-chevron to expand summary. Also take note of various “explain” lozenges outlined in multicolor. These are quick-action queries for Gemini. Have fun! [The production style exactly reminds me of predecessor “Play With Junk” who undertakes massive teardowns of spectacular enterprise-class Unix machines. https://youtube.com/@playwithjunk?si=4-hu0iIA7bGovnGe https://youtube.com/@playwithjunk?si=4-hu0iIA7bGovnGe]
- elaus 1y ago
  As always with new Google products: available only in certain countries...
  - Gigachad 1y ago
    At Google, something as trivial as changing the website theme is enough to trigger legal action so it’s not surprising they roll stuff out carefully.
auguzanellato 1y ago
the short was actually traced to one of the two PD controllers, the other stuff seems kinda right

Rebelgecko 1y ago

This video dives deep into a faulty 120W GaN charger, exploring its intricate design and uncovering the source of the failure. The video details the process of disassembling the charger, revealing its complex circuitry and identifying various components like the GaN transistors and the printed transformer. The investigation concludes with a surprising discovery about the cause of the malfunction.