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Question on LEDs

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Hello ... There is a question about LEDs. As I mentioned more than once, "I'm not on these matters ...")))). Vershkov picked up a little, but I have a lot of questions))))

Actually a question. There are a hundred diodes.
They blink ... Like, imitation of a candle ...
There was a need to solder a garland from them. In the past, there was such an experience with ordinary, indicator (non-blinking). Without any resistance, hundreds of diodes consistently normally serve for many years.
Will such a number pass with these ??? Here the drop is indicated 2.2 volts ... (Or maybe the Chinese just wrote whatever they got)))) ... I connected directly to a three-volt battery (2032). It does not burn at full heat ... N, there the current itself is limited .. And what will be on the 220-volt network?
And anyway ... Due to what they blink ??? SELF MECHANISM ???
Perhaps, having understood HOW IT WORKS, much more will become clear ...
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16 comments
Author 0
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Thank you ... This is my old RARK just was on this computer
I see
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Valery,
https://yadi.sk/d/I7PjgYhz3SFzhS
Catch.
Author 0
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But the video could not be downloaded ....
Author 0
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I know from experience that a "Christmas tree to the ceiling of an apartment" usually needs a garland, from 500 tons of diodes and above ... Then it's beautiful ...
If they flash simultaneously, "one in five or six" .... then that's fine ...)))))
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Here. The current, of course, needs to be limited, the maximum is 20 mA, but this is unnecessary, 10 ... 15 mA is enough. A direct drop of about 2.2 V. If you turn it on sequentially, they will flash synchronously. You can make several groups of sequentially turned on lights, distribute each group territorially so that synchronously blinking lights are not nearby.
Author 0
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Excellent!! So, you don’t have to be a “pioneer” in a matter in which I don’t really “poke around”!)))))
So what's up with them? Do you need to limit the current? ... Or, you can just have a hundred sequentially - and to the outlet?))))
... P.S. Agree, the flashing effect is interesting ... For the "Christmas crafts" - it is! ))))
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Valery, same, and even from this seller. )))
If interested, I can upload the video.
Author 0
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Just those? "Floating"? ...
And then I threw this topic ...
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I tried to include such diodes in series. In this case, the blinking occurs synchronously, I tried from two to six pieces, withstood it for a long time, but there is no rassynchron. I tried to include one, and then the second to it in parallel - there is no synchronization.
For comparison, I tried sequentially 6 pieces of RGB diodes - they work asynchronously.
Author 0
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Two sequentially burn from 18650. There was not enough time for the rest. The experiment is postponed until the next NG ....
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Valery, how did the experiment end?
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Here are three references:, and. Hope this helps you.
Itself did not work with such diodes, but, judging by the Chinese data, in your case the device is current, 2.2 V is a direct drop at a current of 20 mA. Consistently, limiting the current to a level of no more than 15 mA, you can try to turn it on. I believe that a couple more will work this way, perhaps even with an interesting effect, but more than two will glow rather dimly. Therefore, each should be powered separately from the current source, simply put, through a separate resistor.
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Tomorrow I’ll try to turn on several in series from the power supply, say, six volts ... I’ll see what happens ...
Author 0
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About those that blink synchronously, I know ... But these do not blink on-off. They have a glow - “floating”. Just the brightness increases or decreases. Moreover, it is chaotic, and not at the same intervals! They are used in "plastic candles" - it is very similar to a real candle light.
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They cannot be turned on sequentially. They have a built-in pulse generator. I think it’s not quite easy to turn it on sequentially, there seems to be a protective diode installed in the opposite direction.
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The blinking LED (MSD) is a LED with a built-in integrated pulse generator with a flash frequency of 1.5 - 3 Hz. Many probably saw such LEDs on the shelves of radio parts stores.

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