- Maple Valley, a King County community nestled 10 miles southeast of Renton within the sheer-cliffed Cedar River valley, grew from its outskirts inward toward its center. Originally a hodgepodge of homesteader cabins, its growth can be attributed to the lumber industry, coal mining, railroads, watersheds, and highway development.
- Tiny transformer inside: Decapping an isolated power transfer chip (righto.com)
I saw an ad for a tiny chip that provides 5 volts of isolated power: You feed 5 volts in one side, and get 5 volts out the other side. What makes this remarkable is that the two sides can have up to 5000 volts between them. This chip contains a DC-DC converter and a tiny isolation transformer so there’s no direct electrical connection from one side to the other. I was amazed that they could fit all this into a package smaller than your fingernail, so I decided to take a look inside.