One of the most pleasing things about China is their "relaxed" approach to electrical safety. That's summed up nicely in some of their electrical test equipment, like this adorable little connection box that has spring loaded speaker connectors for hooking up mains connections. This is made even better by the single pole switch with neon indicator, and a non polarised plug, meaning that even with the switch off one of the outputs may be live at 120-240V. It's worth mentioning that they also have a very slack approach to earth/ground connections as demonstrated regularly by the unconnected earth wires in their products. That means that there's a good chance that many Chinese factory workers are literally live at 220V or more regularly during the day without even realising it. Obviously I don't recommend buying one of these, other than as an exciting curiosity. They are widely available on AliExpress with descriptions involving words like LED lamp test connection box. They even do bench mounting strip versions with several speaker connectors for mass connection of electrical stuff. The lack of polarity and double pole switch means that if you stick a wire into one of the terminals that may or may not be live then the other unconnected wire may become live via the load before you've even connected it. A slightly more compliant version for naughty experimenters might be to use a proper double pole neon indicator switch in line with the (48V rated) speaker connector. I'm very tempted to make a 3D printed version just for the foolishness of it. The first UK compliant connection unit I showed is a Cliff Quicktest, which has a very long history in our electrical workshops. It's a lot more expensive, but is industrial-grade. 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 algorithm quirks, allowing it to be a bit more dangerous and naughty. #ElectronicsCreators ... https://www.youtube.com/watch?v=LHiPgynfmFs

A followup to the earlier teardown video on the driverless LED with an insulation test of the substrate and the addition of an electrolytic capacitor to the PCB to convert the rectified AC to smoother DC. 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 ... https://www.youtube.com/watch?v=UGTXne_e554

A cheap wall mounting light that can be used for lighting paths, floors or walkways without glare. Like many modern LED lights, this unit should be considered disposable. If it fails the whole unit will have to be replaced or repaired. Construction is quite nice, the light level is OK for a pathway at night and the PCB has some level of hackability. Either changing the LEDs for a different colour, using your own design of PCB or just changing the dropper capacitor to 100nF or 220nF for a lower intensity light. Here's a link to the CPC page for these lights in the UK:- https://cpc.farnell.com/pro-elec/pel01324/led-wall-light-100mm-dark-grey/dp/LA07984 They do a few different sizes. 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. ... https://www.youtube.com/watch?v=1TziZejdClw

The 2019 Edinburgh Meet was very busy and went on from 3pm to 11pm. Lots of technical chat, food and drink. Thanks to everyone who attended. The 2019 channel meet up will once again be held at the Caley Picture House on Lothian Road. It will be on Sunday the 18th August 2019 beginning at 3pm. The Caley Picture House is an old cinema that has been converted into a Wetherspoons pub, so food, tea, coffee and other stronger drinks will be available as desired. (And can probably be ordered from the tables with their app.) Please don't bring technical gifts, as I am travelling and need every inch of luggage space. Also be aware that this event is during Edinburgh's Fringe Festival, so accommodation will be ludicrously expensive if you travel from afar. As in previous years, please check here or the official bigclivedotcom Facebook page before attending in case of unexpected changes. https://www.facebook.com/bigclivedotcom/ ... https://www.youtube.com/watch?v=LAb2SBOD1sg