This is the rechargeable variation of the USB powered ultraviolet lacquer/glue curing and exposing light. It arrived defective with the charging circuitry for the internal cell seemingly intact, but no operation of the output. The unit is quite a functional device (now I've repaired it), but the switching system is a design weakness. A simple button would have been more useful. I guess maybe the main market of nail varnish curing means that a simple press on the top is a preferred way of activation. 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=I_LcwHqBm0k
One of the snow machines went bang and we were trying to locate the area of an elusive fault. Since it's hired equipment I can only go so far unless the hire company approves further exploration, but the fault may be tracking between live and neutral on the mains input on the PCB (it does have small anti-tracking slots), a local MOV or the main blower motor, although I don't think it's an issue.
These snow machines are slightly bizarre. They have clearly had a lot of development work put into them, including a custom round PCB with a very chunky transformer and suitable DMX decoding hardware. The main blower is housed in large drainage pipe with the fluid reservoir formed from equally large drainage pipe, then the whole lot is encased in a rolled stainless steel housing.
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http://www.bigclive.com/coffee.htm
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https://www.youtube.com/watch?v=5V9YezvtpUI
It creeps me out that stuff like this is available to ordinary consumers. The technology is usually used by trained professionals in industrial environments and can cause serious eye and skin damage with a short direct exposure.
This video is part review of construction quality (poor) and partly to make you aware of the dangers of using one of these.
These lamps do damage viruses, but unfortunately they can damage humans too.
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.
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https://www.youtube.com/watch?v=aaVnAO1Vv-k
It's all gone a bit Ashens momentarily. https://www.youtube.com/user/ashens
So amongst the Poundand Halloween confectionery was this chocolate witch, which looked suspiciously like a chocolate easter bunny...... Obviously this had to be investigated and eaten.
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=YLsLsKmNb9s
This is an MK socket with a key operated switch to allow authorised users to power items.
The way they've achieved the key-switch function with standard electrical components is very impressive. But can it be picked?
The part number for this MK socket is K2949BSS if you have a use for one. They're quite expensive due to being a specialist component.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://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
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https://www.youtube.com/watch?v=YW2B4Yzr5c0
A short video showing the counting mechanism from an old Bally pull-handle slot machine (fruit machine). This module counts the coins that have been paid out from a rotating coin hopper.
This machine is from an intermediate era between the all-mechanical arcade/casino games and the fully electric ones. The reel mechanism is mechanical, but the coin handling and controls are electrical. (No electronics yet.)
I'm not sure how old this machine is. Possibly from the 1960's.
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.
#ElectronicsCreators
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https://www.youtube.com/watch?v=clTchLRZzs4
This device is an automated water kettle that heats and then vends a single cup of boiling water on each operation. It's fast (50 seconds) and efficient as it only heats the amount of water that is needed for a drink. In the UK our standard power sockets can supply 240V at 13A allowing 3kW appliances to be plugged into any socket.
I've this unit for a while, and recently it started misbehaving when turned on. Sometimes it would work immediately and other times it would pause before making a slight pop noise and then working. Finally it just stopped working and a wisp of smoke came out of the switch.
It was easier to open than expected and revealed a simple, but very clever switch that latches in the on position, but can be reset by a bimetallic disk that is exposed to steam from the boiling water.
Initially I thought it was a custom switch just for the appliance, but it turns out that it may just be a standard kettle switch mechanism. The original one was made by Strix, a local manufacturer of kettle components, but the replacement was another brand.
In hindsight I now know that I could have got these switches from a variety of sellers, but sadly not a Strix original.
If you have one of these Breville Hotcup units and use it a lot then I'd recommend getting a spare switch in advance. It's easy to change. (Make sure the kettle is not on the power base when working on it.)
Here's a link to the UK eBay listing I bought my replacement from:-
https://www.ebay.co.uk/itm/302892375135
A search for - Strix R4803 - may bring up the original component.
Alternately a search for - kettle switch - will find a variety of similar units.
Clones may not be up to the same quality/safety standard as an original Strix switch.
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.
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https://www.youtube.com/watch?v=b0UM1Uvdb48
I'm not sure how common these sealed packs of pre-cooked microwave rice are around the world, but I've always wondered how they can keep them sterile for so long. I've also wondered what would happen if the pack got damaged in storage or had a leak in the seal that allowed air to get in.
That was answered recently when a work colleague noticed I was using these packs as handy meals and got one to try. What he didn't notice was that there was a slight cut in the packaging, possibly from the factory, during shipping or perhaps overzealous opening of a box with a knife in the store.
He said it looked and tasted odd and asked me if it was normal. That was when we found the green mould and slit in the packaging.
So here's what it looks like when you open a damaged pack of microwave rice. Remember to check these packs thoroughly before using them.
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https://www.youtube.com/watch?v=XBxbACjF2xc
Noco is fairly prominent brand in the lithium jump starter market, mainly due to heavy marketing. This unit failed after a few uses, so let's take a look inside and see if we can find what went wrong.
The optocoupler-like devices are indeed Cosmo 1010 optocouplers.
The battery balancing is dealt with by an 8254AA chip with 4435 MOSFETs.
The LEDs are driven by an Xn2115tp device.
The main processor is a Holtek HT46R06.
The USB output is powered by an MP1584 buck regulator.
The USB charging input is boosted up by an FP6293.
There's a GZ423 (maybe a dual op amp?) and a 3.3V regulator.
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
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https://www.youtube.com/watch?v=uAvyRwMhd0w
You can now buy me cake and things to take apart at:- https://www.patreon.com/bigclive
A look inside a typical 10W rechargeable LED floodlight from ebay.
This is the LONG version with the intensity maybe locked off a bit too low? You may feel the need to skip past the bit where I'm fighting with glue and heatshrink. There's also a shorter version of this video.
There are a lot of sellers selling these on ebay. To find them, do a search for rechargeable 10W LED work light
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https://www.youtube.com/watch?v=2Eqm5WdK9vA