From 8e51476e3890efd9e80457b9d401dc9724aca95b Mon Sep 17 00:00:00 2001 From: Peter Date: Sat, 24 Feb 2024 21:50:59 +0800 Subject: [PATCH] Add update to bus charger --- _posts/2024-02-24-Inside-a-bus-USB-charger.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/_posts/2024-02-24-Inside-a-bus-USB-charger.md b/_posts/2024-02-24-Inside-a-bus-USB-charger.md index 08139cf..cd797d8 100644 --- a/_posts/2024-02-24-Inside-a-bus-USB-charger.md +++ b/_posts/2024-02-24-Inside-a-bus-USB-charger.md @@ -9,6 +9,9 @@ image: /assets/img/2024-02-24-Inside-a-bus-USB-cha/preview.png Random post, on the bus I saw one of those wall-mounted USB chargers with the plastic cover already removed (I did not remove it). This is what the PCB inside of it looks like. -Looks like there are two DC-DC converters, pretty simple. +Looks like there are two DC-DC converters, pretty simple. The board also appears to be conformal coated. + +EDIT: +Looks like this is just a COTS charging module. Searching `"USB3.25"`, which is present on the sticker on the USB-A port, leads to this [product page](https://www.vignal-group.com/en/30-double-charging-usb-socket-for-a-bus-or-a-coach-6957.html). The [datasheet](https://www.vignal-group.com/en/fiche-technique-30-double-charging-usb-socket-for-a-bus-or-a-coach-6957.pdf) claims it is "equipped with a protection against overvoltages, polarity reversals and short-circuits(intentional vandalism).". ![Charger board](/assets/img/2024-02-24-Inside-a-bus-USB-cha/usb-charger-bus-highres.jpg)