This is a fairly common item on eBay. The fact it's on eBay does mean it may be a dumpster product, but it's a good indication of what is available from better quality sources.
The electrical spec for this seems a bit zealous, especially when you see what's inside it. I think I'll give passing mains through this a miss. Even the 2A contact rating seems a bit generous.
But the construction actually turned out to be surprisingly good. Not just with two bearings, but a very clean construction with the rings also acting as guides for the sliding contacts.
For beefier applications AliExpress has some very rugged looking slip ring assemblies with carbon brushes and chunky brass rings.
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It's always fun to buy random high voltage equipment from vague Chinese sellers on eBay and try and work out how it works and how to use it.
In this instance it turned out to be a gas burner ignitor with some interesting circuitry to optimise cost and function.
If you have one of these then here's how to wire and use it.
I specifically avoid using intrusive mid-run video adverts for a more relaxing viewing experience.
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https://www.youtube.com/watch?v=tRIIVcrO_TU
Following the results of the Jägermeister vs Sodastream test, the most requested follow up was to try and carbonate Baileys Irish Cream.
Your wish is my command.....
Here's the original Jägermeister carbonation video:-
https://youtu.be/pJeFMIeIPhM
A link to a video about the "supercomputer" in the background:-
https://www.youtube.com/watch?v=H1k7mxhWQ5Q
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https://www.youtube.com/watch?v=6oUJ27q0noU
The cable on many of the generic Chinese dashboard cameras always seems to break at the less than effective strain relief on the 12V to 5V power supply. I thought I'd video the repair I did to this one.
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https://www.youtube.com/watch?v=mw6MPvGBwP0
This module was sent to me by a chap called Mike because it had failed in his new Beko fridge. It's interesting because it is possibly designed to be cheaper to use than a conventional lamp holder and LED lamp, while also ensuring maximum profit if a replacement is needed out of warranty. (£20 plus shipping at the point of making this video.)
So here's how it works, how to test the LEDs and decide if perhaps one needs bridged to get it working again.
Keep in mind that the fridge must be unplugged from the wall before attempting to install or remove this panel, as it operates at mains voltage.
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https://www.youtube.com/watch?v=7BgWoeMGoX0
This appears to be a clone of a popular lamplighter retrofit cover plate for classic US sockets that makes connection automatically to the electrical connections on each side with spring loaded contacts. In a dark room the plate then gives a splash of light downwards onto the floor (or upwards if you wanted I guess) to act as night illumination.
It doesn't take much light to navigate round a house at night, so I can guess these would be quite effective.
The design seems to have first appeared as a Kickstarter project.
https://www.kickstarter.com/projects/snappower/the-snaprays-guidelight-illuminate-your-life
Here's a generic ebay com search link for the clone:-
https://www.ebay.com/sch/i.html?_odkw=night+angel+-color&_sop=15&LH_BIN=1&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.Xnight+angel+LED+-color.TRS0&_nkw=night+angel+LED+-color&_sacat=0
And here's a link to what I think is the original manufacturers website for one that won't invalidate your home insurance:-
https://www.snappower.com/
And their excellent lamplighter advert:-
https://www.youtube.com/watch?v=8lDwwAQea4Q
Note that the capacitor used in the dropper circuitry of the clone is freakishly small for what should theoretically be a 220nF 200V device. Either technology is progressing well or a corner has been cut.
I wouldn't mind seeing the PCB out of an original unit.
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https://www.youtube.com/watch?v=225LhPh5uxk
This is actually sold as a complete product ready to go, but as with many of these things you really have to treat it as an unfinished product and do all the final bits yourself.
It does offer very good value for the components though, and is an ideal base for many personal outdoor projects.
I wonder where these are actually used in real life. Do people install them as wall mounted alley lights in China or even as pole mounted lights for actual path or street lighting?
Some afterthoughts...
The screws that hold the LED panel onto the back of the housing were very short and two stripped their threads while being tightened without excess force. Not sure the size, but an M3 screw wasn't a direct fit.
The earth connection was the same screw and the same inadequate tapped hole as it often is. The factories that make these don't seem to understand that attaching the earth is supposed to mean a solid electrical connection and not just to keep it loosely out the way.
For those that will inevitably say that it will be grounded by the pole or wall bracket it's mounted on, there may not be a ground on that either. Especially a wall bracket.
If using this panel I'd downgrade the driver to 20W, attach the earth connection properly and check that the panel retention screws were holding it in place properly, replacing them if necessary.
Other than that, the fitting is an interesting twist on the older units with classic 1W LED beads and discrete lenses. The use of a traditional driver is interesting, as I was expecting it to be a DOB PCB (Driver On Board) using the simple current regulation chips.
The seal on the front looks decent and theoretically the position of the flex entry hole should prevent water ingress while allowing the fitting to breathe.
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https://www.youtube.com/watch?v=zGjM2Mp5IfU
Some items are worth buying on eBay just for one part. In this case an aquarium heater comes with a neat 100W spiral heating element inside it. Or, as mentioned in the video, the whole heater could be mounted through the side of an enclosed tank with a suitable sealing gland to act as a low power heating element with a rugged glass body. The wattages available are typically 50, 100, 200 and 300W with the main difference being the length of the heater section.
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https://www.youtube.com/watch?v=pnAI0_S-lUY
There's probably an unglamorous reason that the LED street lights around this whole block are strobing in sync:-
First guess - failed power supply for the controller in "hiccup" mode (keeps failing to start).
Second guess - defective controller crashing repeatedly.
Third guess - Programming error or corrupted program.
But really - I kinda want it to be a test routine loaded into a networked controller remotely by a hacker.
#short
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https://www.youtube.com/watch?v=NHIxk-UDqEQ
There are two interesting things about this pump. The case is transparent, so you can see what's inside - which is nice, and there's a switch on the side that lets you choose two power settings.
This is just a quick video taking the whole darn thing apart to see how they select the speeds and the general construction. (very classic aquarium pump design)
Not sure the actual air volume or pressure of this unit. The listings are always a bit generous in their ratings. At this point in time I've not been able to find the listing I got this from.
It could perhaps benefit from a few strategically placed blue neon lamps held securely in place to avoid vibration issues.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
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https://www.youtube.com/watch?v=ctSoLKxEyBQ