Julian’s electronics postbag #157 – boost and buck
New stuff from eBay and AliExpress. https://www.aliexpress.com/item/1005004844972111.html https://www.ebay.co.uk/itm/144887401123 https://www.ebay.co.uk/itm/385476746254 https://www.aliexpress.com
Exploring electric hot water bottles
Looking at a few different electric hot water bottles. Why do they puff up over time and stop working?
Julian’s electronics postbag #156 – ebay and aliexpress
New selection of stuff 2Pcs Brushless DC12V 5015 Cooling Fan Blower Turbo Cooler for 3D Printer Black https://www.ebay.co.uk/itm/175207154117 2Pcs Gdstime…