Inside a USB rechargeable misting unit (with schematic)

Inside a USB rechargeable misting unit (with schematic) https://stream.echo6.co/videos/watch/80da708e-0c46-4f61-a35b-221cb20b0478 These little units were originally sold as beauty aids that misted your delicate skin with water in a dry office environment. They seem to have become very popular, and the circuitry has evolved to a minimalist approach. There's a possibility that these units could be used to nebulise alcohol for inhalation, but it should be noted that you are effectively inhaling a solvent. It's not recommended. The older unit I melted with "air freshener" chemicals was much more complicated inside. It seemed to have current sensing on the primary of the transformer. Presumably to maximise efficiency by operating at its resonant frequency. The new approach of software set frequency is much simpler. The lithium cell is very much a small token gesture 150mAh one to make the unit rechargeable. The slim unit charges it at an appropriate 100mA, while the larger round one charges at 500mA suggesting intent for a larger cell. Here's an eBay search link to find these units:- https://www.ebay.com/sch/i.html?_from=R40&_nkw=facial+steamer&_sacat=0&_sop=15 Target price around $5 Interestingly, I had neglected the melted unit long enough for the lithium cell to over-discharge and puff up. When I gave it a recharge the cell seemed to reabsorb the gas and shrunk back down to its normal "vacuum packed" size. If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- http://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty. Fri, 17 Apr 2026 10:17:04 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co Inside a USB rechargeable misting unit (with schematic) https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/80da708e-0c46-4f61-a35b-221cb20b0478 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.