A bright standalone DIY lamp
Suddenly a failed external battery is not a cause for frustration, especially if only its microcircuit is damaged. Of course, this is the most important part in this device, but if the batteries are not damaged (in many such devices are often used), they can always be used. My external battery had six lithium-ion cells. Each is 4.2 volts and a capacity of 6800 mAh.At least, so it was stated on the label. Not having a device for measuring, I took them to my friend, to check. Measurements showed a capacity of 4300 mAh, which is also very good. As for voltage, the label did not lie - 4.2 volts. At the same time asked to identify the failure of the device itself. After making sure that the reason was in the microcircuit, and the batteries were not damaged or damaged, I quickly found a use for them. I decided to make a wall-mounted, independent of the outlet, a lamp (the good, the capacity of the batteries allows it to work in such conditions).By connecting three batteries in series and getting 12.6 volts at the output, I connected a 12 volt LED light bulb from an old chandelier for the sake of interest. The effect is quite impressive - in the first seconds I was blinded. The light is incredibly bright. At least in the chandelier was not so bright. The light bulb itself, for some reason, almost does not heat up, which is rather strange with such light output. Strange, because I know that LEDs also tend to heat up when the brightness is high. Take at least a flash in the phone, if you use it as a flashlight ... But this suddenly opened plus gave me the idea of such a lamp - it works for a long time, it heats up a little, I am glowing brightly! We proceed to the assembly.Tool:We process flux and put a piece of tin-lead solder on top, close to the joint. We heat this structure on a gas stove.Carefully so that the solder does not fall. Upon reaching the required temperature, the molten solder itself will spread throughout the joint.Now we cool it all. Remove the screed. The result was such a blank:We cut off the field from the plug with a grinder so that it is flush with the body. Although, you can leave if too lazy to mess around. Just if in the future the lamp will be inserted into the bracket on the wall, these fields can interfere. Now let's do the bottom cover. We take the plug for 15 mm, drip inside the flux, put the spring in there, put the solder in and repeat the procedure with heating.It turned out the bottom cover of the lamp, through which we insert the batteries. And now the top cover. The plastic cut out of the bottle is rolled up and inserted into the prepared thread from the same bottle. This plastic tube, in addition to the insulating function, will also serve as a filler, so that the batteries do not hang out and do not rattle inside the case when the lamp is in mobile use.We solder to the edge of the case from the inside a small posting (for the minus, which will be on the mass).
It will be needed
- A length of metal pipe 30 mm in diameter and 210 mm long.
- , voltage 4.2v . (you can also use four batteries per 3.7v. But then you have to lengthen the tube-housing to the appropriate distance)
- and the cartridge holder to it.
- Internal and external hollow M10x1.5 threads (such as used in chandeliers, wall lamps, desk lamps and other electrical appliances).
- Lock nut 15 mm.
- 15 threaded end cap mm.
- Thread from a plastic bottle.
- Two caps from a plastic bottle.
- Plastic itself from a bottle (smooth,area 200 × 150 mm).
- Tin-lead solder and flux.
- Thin wire from headphones .
- Heat-shrinkable tubing for 3 mm.
- Aluminum wire with section of 2-3 mm.
- Seconds glue.
- Stationery knife.
- Round file.
Luminaire manufactureFirst, prepare the luminaire body. It will be from a metal pipe. After we cut off the necessary piece, we will process the edges with a sandpaper and a round file in order not to get hurt when working. Now, with the help of an aluminum wire tie and knitting needles, we press the lock nut to one of the ends of the pipe.
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