I had to source USB power supplies for a product ... Also, why was the output 4.7-5V, and why did my scope say 5.5V (but surprisingly stable)? Inside was a completely different beast.

[Paul] recently purchased an inexpensive USB power pack ... Now you can’t just hook up the 22 ohm resistor to a 5V power supply for the sake of keeping it on — that would draw 1.1watts ...

3A 【Widely Application】It is for 5V/3A equipment DIY power supply and maintenance replacement, such as LED desk lamp,usb fan,small appliance light belt,power adapter,power charging stand ...

The idea for this ESP32 usb-c power supply project came to me when I discovered that components ... it is connected to a pc using a USB-C cable but the output is only ever +5V. When the board is ...

If a MIDI device with lots of LEDs is used, be sure the 5V power source provides enough current for all devices. Both TM0s are running the same sketch. If a USB MIDI keyboard with lots of knobs is ...