» Flashlights and flashlights »The simplest flashlight on one supercapacitor (5+ hours of operation)

The simplest flashlight on one supercapacitor (5+ hours of operation)

The simplest flashlight on one supercapacitor (5+ hours of operation)

We recently looked at how to make a very bright flashlight on two supercapacitors. But his disadvantage was that a too powerful lamp was used there, which planted a flashlight in 6 minutes. Here we look at a similar lamp, which is made just the same in order to shine as long as possible. Despite the fact that there is only one capacitor installed, and not two, as in THIS COOKINGThe flashlight can shine for more than 5 hours. All this is due to the fact that here one LED is used instead of a lamp.
Everything is going pretty quickly, though you have to tinker with the case. It can be printed on a 3D printer or just pick a suitable cylinder.

List of materials and tools for assembly:
- 100 ohm resistor;
- wires;
- Light-emitting diode;
- heat shrink;
- soldering iron with solder;
- wires with crocodiles;
- diode;
- supercapacitor;
- switch and more.

Flashlight assembly process:

Step one. Parts preparation
First of all, the author printed the case for the LED, cleaned out the capacitor outputs for soldering, and picked up the LED. All parts in this step are already prepared for assembly.


Step Two Scheme

The author decided to charge his flashlight from the solar panel, in connection with this there is a diode and no switch. How exactly everything is connected can be seen in the diagram.


Step Three Install the capacitor in the housing
In the next step, the author installs a capacitor in the housing. First, in the upper part, you need to drill a hole for the output of the charging wires, since the author forgot to provide it.

The author connected a resistor to the long terminal of the LED to protect the LED. A red wire is connected to the other end of the resistor so as not to reverse polarity. For insulation, the author pulled a heat shrink on the resistor. The author seats the pipe with a soldering iron. To the other end of the LED, you can solder a wire of blue or another color, so as not to reverse polarity during assembly. The other contact is also shrink-insulated.









Even at this stage, you can remove the charging wires from the hole and solder them to the appropriate places.

Step Four Further assembly
Push the LED through the cover. Then it remains to solder all the other wires, including installing the LED. At the end, the cap is fixed with an aluminum scotch. So the flashlight can be quickly disassembled if necessary.









That's all, the flashlight is ready. For best performance, a reflector can be installed under the LED.
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19 comments
Quote: Valery
Apparently, there is a design "collective farm" inside
I looked at the photos of the inside - an ordinary interior, like all modern buses. Why should there be anything unusual? The simpler - the cheaper it should be. Is that the design of the driver’s seat is simple - so what matters to passengers about this?
I don’t know how inside, but outside is definitely better

That's it! !!! ... I just realized now that by "design" they (users) probably mean the inside! Apparently, the design is “collective farm” inside ... (I don’t know, I didn’t go it myself.) ....
And I still think why most of our Minsk dwellers so low in design? !!! As for me - quite modern. No "last century!" ...
..I will be in Minsk - it will be necessary to take a ride .. It is interesting that there is already such a terrible design ...))))
In addition, Vitovt - with an accordion, more maneuverable.

I saw them in different versions. And with an accordion, and a shortened version, without it.
Perhaps the Finn is also made this way
Quote: Valery
Belarusian "Vitovt" looks more modern

I don’t know what is inside, but outside is definitely better. In addition, Vitovt - with an accordion, more maneuverable.
Finnish Linkker.

.. By the way, about the design ... Maybe I have something with the perception is not right ... But, honestly, in my opinion, the Belarusian “Vytautas” looks more modern ...
... And our mostly "outdated design" and hayut ...)))))
Well, isn’t it yet? I thought that ours, as always, "jump into the car of the outgoing train ...
Your link generally surprised me ... It turns out that a certain company in Kazakhstan trades in Belarusian-made public transport ...
... And we have an opinion that our country is "collective farm and backwardness", and that everything we produce is outdated and uncompetitive! .. Among young people there is a "reinforced concrete" belief that all our "successes" are exclusively " the merit of the zombie’s man, "but in fact neither BelAZ, nor MAZs, nor tractors, nor combines are needed in anyone in the world because of their involvement in the" past century "... I'm not talking about household appliances Atlant and Hephaestus
But, if it is true that somewhere someone is selling something, it means that even if it’s potential, is there a demand? .. Such a large-scale company would not have been opened otherwise ...
... That is, the Belarusians are really whiners, and they just love to be stingy and scold everything they own, as many Russians write about it? ))))
In Moscow, they are also going to launch electric buses, one of the applicants.
Quote: Dmitrij
cool) what is the total capacity there?

Here it is. They can estimate the capacity themselves.
12 km - there was a TK. In reality, it is up to 20 km, but this is in the summer and without an air conditioner, it is not known how it will be in the winter, it is possible that the heating will be on hydrocarbon fuel.
Dmitrij,
Yes, it seems, while "small". They say that between stops no more than 12 km should be ...
Author
cool) what is the total capacity there?
What's on capacitors? If the buses - then yes. At stops, they recharge, while people sit down and get out .... I did not go to them, I just overtook))).But the people say that "quietly, smoothly and quickly" ... Although there are many skeptics ... And the range is small !!! (And why is it in the urban cycle more than a few tens of kilometers ??). And that "with us Belarusians everything is not like people !! We can’t produce normal buses, we’ve come up with this!" (Although we also produce buses and trolleybuses and trams ... And, it seems, not bad))). And, especially, about the "collective farm" design !!!
Although, in my inexperienced opinion, the design is nothing ...

Author
On capacitors?
For this, ionistors are suitable: fast charging, the ability to charge at the final stops.
In Minsk, buses run on such buses ... Well, in the sense, not buses, but electric buses))). They are called that, by the way ...
In what cases is it advisable to use ionistors? When very large currents of charge and discharge are needed, when a long service life or a large number of charge and discharge cycles is required. And the disadvantage of ionistors is many times lower specific energy consumption compared to batteries and the difficulty of obtaining a large operating voltage.
There is no obligatory element in this case - any voltage limiter on the capacitor, so as not to burn it when charging.
cool i liked
GOOD LUCK !!!
I repeat, the use of expensive capacitors in such devices is not very rational !!!
The so-called leads to complete amazement. And the hanging “tails” for charging?
If you already tear, then, at least, something decent, and not this squalor.

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