This is by far the chunkiest head torch I've taken apart. While the concept of solar recharging while on your head is interesting, it's so awkward that I think you'd probably want to take it off immediately after use.
It does work. It provides a good wash of light and a slightly too narrow beam for close work. I'm also pretty sure the battery will run the LEDs for a good length of time at a gradually reducing intensity as the battery discharges. The 3 ohm resistor does hint at running the LEDs at around a watt for either the COB or beam.
I'll be keeping the little solar panel, battery, LEDs and reflector. But other than that this light is just a bit too bulky to use versus a compact lithium powered unit.
I'd estimate the power factor as being in the region of 0.016 because it's deriving a 4V supply from 240V via a phase shift. If being charged at apparent power the unit would meter at 14W instead of less than half a watt real power.
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.
It does work. It provides a good wash of light and a slightly too narrow beam for close work. I'm also pretty sure the battery will run the LEDs for a good length of time at a gradually reducing intensity as the battery discharges. The 3 ohm resistor does hint at running the LEDs at around a watt for either the COB or beam.
I'll be keeping the little solar panel, battery, LEDs and reflector. But other than that this light is just a bit too bulky to use versus a compact lithium powered unit.
I'd estimate the power factor as being in the region of 0.016 because it's deriving a 4V supply from 240V via a phase shift. If being charged at apparent power the unit would meter at 14W instead of less than half a watt real power.
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.
ะกั ะตะผะฐ ะพัะตะฝั ะฝะฐะฟะพะผะธะฝะฐะตั ัะพะฒะตััะบะธะน ัะพะฝะฐัั ัะปะตะบััะธะบะฐ. ะั, ะทะฐ ะธัะบะปััะตะฝะธะตะผ ัะฒะตัะพะดะธะพะดะพะฒ.
"Aolar"?? ๐ค
Kinda surprised you bothered taking one of the batteries apart, lol. Not really surprised that SLA batteries are taking up all the displaced lead โ at least theyโre easier to recycle than solder tho, so thereโs a chance they wonโt end up in landfillsโฆ Hopefullyโฆ
It's very old and very cheap. Lead acid batteries are extremely easy and forgiving to charge, and very cheap for the capacity.
This lamp used to use a pair of tungsten filament lamps. One in the main beam and one in the area flood where the COB now lives.
The design also predates lithium, and already had the extremely cheap and basic charger system.
So instead of going through the whole thing and upgrading it to lithium, they just took exactly the same head lamp they've been building since who knows when, threw LEDs into it, and could advertise it as LED HEAD TORCH.
Great blast from the past .all your old videos are coming back up .even after I already have given thumbs up .YouTube is at it again
Lithium batteries are SO MUCH better ( and lighter ! ) , but with this set up the charge voltage must NEVER exceed 4.2 volts ( for a lithium cell ) or nasty things happen … there is no charge voltage regulation in this device , so sadly a direct drop in is not a good idea … lead batteries MUST be constantly maintained ( many folk do not ! ) , a bit like looking after a pet ( ? ) whereas a lithium cell will hold it's charge for MONTHS .. and .. they do not leak , unlike alkaline types , my ultimate hate ( GRRR ) …
Errmm.Not sure about having a container of acid sitting just above my eyes.
You could 3d print a battery holder to fit in this light and still have the cells secure. maybe some kind of flat cell will be more space effective than 18650 would be a cool project. also make an new circuit board that reuses the original switch etc but with charcing circuit for lithium. Looks pretty much like lights they sell in dollar/china crap warehouses here in sweden. Years ago they used to be incandescent. My dad had one in a cold attic the PB/So4 battery explains why it only worked the first time he used it.
Clive the video you did a little wile ago on those cheep voltage indicators ? Is there any way of adding one or two extra components to the circuit board to stop it banging out RCDs when testing between line and earth? I am asking for a friend out of curiosity.
I do love watching your videos mate I always learn something new and interesting to maybe I could have play with . So thank you for all the information and the videos .
That head light looks like it is modelled on an SLR Camera, and like those cheep little digital cameras for kids you can get from Amazon. But I bet it a useful tool that does the job.
Fantastic video as always Mate ๐๐๐โค๏ธ
I shudder to think what sort of "human place" they are referring to……
I recently suffered a liver injury and now can't drink alcohol. I really appreciate your videos during this transitioning as I used to drink almost every night. thank you for helping me relax a bit and learn my new norm. cheers
There should be a zener across the battery to prevent voltages rising excessively if the cells go open circuit.