Flashlight for everyday wear (review NiteCore EA1)

Hello, fellow! For more than a year, I read your great articles, reviews and reports, but to this day he remains in the shadows. But today decided to make a small contribution to the total, so to say, the case.I'll talk about lanterns and, in particular, one of the best (in my opinion) for everyday wear in any conditions-NiteCore EA1. I strictly do not judge and take condescending to my first publication.So, a short introduction: A few days ago (to be precise, the New Year's Eve) son overcame me, my faithfully served me a few years lantern (surprisingly high quality offspring Russian-Chinese Read more [...]
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Solar battery

The farm will always be radiokonstruktora old diodes and transistors become unnecessary from radios and televisions. In skilled hands it - wealth, which you can find a sensible use. For example, to make a semiconductor solar battery to power in field conditions transistor radio. As you know, when illuminated with light semiconductor becomes a source of electrical current - photocell. This property we will use. Current and the electromotive force of the solar cell depends on the semiconductor material, the magnitude of its surface and lighting. But to turn the diode or transistor cell, need to Read more [...]
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Solar battery

The farm will always be radiokonstruktora old diodes and transistors become unnecessary from radios and televisions. In skilled hands it - wealth, which you can find a sensible use. For example, to make a semiconductor solar battery to power in field conditions transistor radio. As you know, when illuminated with light semiconductor becomes a source of electrical current - photocell. This property we will use. Current and the electromotive force of the solar cell depends on the semiconductor material, the magnitude of its surface and lighting. But to turn the diode or transistor cell, need to Read more [...]
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Simple USB-charging

I propose a simple charger with access to the USB-port.We need: -pad on 4 batteries (AA size) -USB socket-bracket for USB-port (part of the metal design)Flex item, as shown in the photo. In the block a couple of drill holes. Fasten the bracket to the block using M3 screws with countersunk heads.By wires that go from the pads, solder connection terminals USB-port. In block black wire - "minus" red - "plus".Into the USB port, the following pin assignment (view from the other side which is connected powered device)More detailed information about the USB-port you can see for example Read more [...]
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About flashlights.

Hi all visitors! I have accumulated a few flashlights, decided to show - who can and will be useful information. All lights (except era) Battery-18650, they are a little more size AA batteries. So here they are: Left to right: - Flashlight era (analog beetle familiar from Soviet times, only then added the battery does not have to constantly buzzing)))- Flashlight Z-Q5, LED Cree Q5, 230 lumens, 3 modes, adjustable focus. Great flashlight, pleases the presence of focus, ie of the light spot in the half of the room to a small long-range point. Strongly heated at maximum capacity.- Flashlight Read more [...]
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Nalobnik from scratch out of everyday items

Lantern, which will be discussed, was made for me somewhere six months, slowly and upon receipt of ideas. Turners friends I have, so all body parts had to be made out of everyday items. The aim is demountable product, ie no pouring glue.The basis was taken from the Soviet radiator diode. Alas, it has had some extra holes, new this was not found.(From such diodes, incidentally, makes a good substrate screw, but that's for another topic) From the radiator from the computer power supply was machined pancake, which will be planted with star diode. Perhaps it would be better to completely cut leaky Read more [...]
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Compact charger units, operating at a voltage of 6 to 40c

Good day to all present. Units consists of a voltage regulator (PWM controller) capable of charging your USB Soup from so many sources, even from ancient bortseti moped with a voltage 6c, though from bortseti tank 27. Somebody teach uneducated use of khat.Now the converter is connected to the crown and is used as an external power supply for OTG tablet (by the way for this and need a second USB port on the board).The schemaMS34063 chip is used. We 16rub worth it. Both diode Schottky diodes it. Voltage is set at 4.7 kò trimmer. I put 5.11v Also equipped with a standard USB connector Read more [...]
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