@computersandblues a) gur usb-c port gives me a sense of scale, i can see gur board is small enough to fit into a charger

b) gur big cube-ish componenent in gur middle is a transformer, these are used all gur time in power supplies to convert AC voltages

c) gur IC in gur bottom left looks like it -could- be a a bridge retifier, which is used to convert from ac->dc

d) gur big capacitor looks like it could be used for smoothing the output of the rectifier