Features of light catching

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25.11.2012 18:46, alex017

In general, I do not understand the joke of shining CFLs, if only because it is more reasonable to take visible light from diodes! And for that matter, I even have a ready-made non-dimmable dc driver 12V 1A, 4 diodes available, only there is no radiator. Such a 12W light bulb will give a guaranteed 1600lm of light at the output, this is a decent searchlight!
And I also bought a 24vdc inverter epr. Where does it make sense to redo the inverter?!
But to redo it for running engines is a completely different matter!
I repeat that the point of using an inverter is simply the load on the converter.
By the way, you would have doubled up when you saw how its dc-dc converter internals are made: I can't understand how the manufacturer stuffed so many elements into such a volume!
And at a current of about 0.8 A, there is practically no heating.

This post was edited by alex017 - 25.11.2012 18: 47

10.12.2012 16:15, Hierophis

While you're theorizing here, I just did IT

I and sipytal are already in different modes

This is a DC/DC converter that is regulated in small limits by the output voltage(by selecting the pulse width), made using a slightly modified version of this one
http://radiomaster.com.ua/index.php?newsid=1593
However, changes are only in terms of increasing power and reliability..

The parameters are as follows (based on the IRFZ46N keys used, or from a 400W computer power supply)- maximum long-term power of 300 W, output voltage for connecting CFL 360V(as needed), efficiency of at least 90%.

When the CFL operates at 38 W, the current is 3.7 A at the input, the power consumed by the light bulb is approx. 40 W, and no parts in the diagram are heated at all.

When operating at a power of approx. 250W, the current consumption is approximately 23A.
But I have measured all this from the power source so far, and there the voltage sinks at this current.
At this power, at a room temperature of about +25C, the radiator becomes slightly warm.

Now it remains to zabatat the box, and you can make such a flashlight)))

Likes: 1

10.12.2012 17:04, Hierophis

Yes, the same scheme itself, only I did it based on maximum efficiency and power, when connecting a 38W housekeeper at the output of about 360V, I get it on this scheme.
The same goes for connecting 26W. At XX, approximately 380V.

This is due to the fact that I carefully studied a couple of forums that discussed this scheme, there are already up to hundreds of pages in some places

, and took into account all the amendments.
The main thing is a fairly capacious capacitor at the input, a paradox, but it is needed, and a special one at that, with a low inductance. Ordinary ones explode.
I put 9 capacitors with a capacity of 3300mkf from the comp. board from the processor power stabilizer, at the output-I need exactly capacitors from the computer power supply, special pulse ones, I put a pair of 200V 330mkf, the width and frequency of the pulses need to be adjusted for a specific trance, put protection-rc chains to block reverse emissions for reliable operation on XX, wiring on the board on the low side, I made a 2.5 kV mm wire. As a result, if you take it to the maximum, then you can safely connect 400W, and real and not Chinese)))

In general, this is a very good thing, real parameters, high efficiency, some with a very scrupulous measurement was up to 95% at R ok 100W, but this is true with drivers, without them like 90-92% max.
It is advisable not to use a multiplier for high power, but tests were shown with capacitors from the PSU ka kpokazali-250W is normal at a voltage of approx. 260V with a multiplier(connected resistors).

PS
If it is still accepted, describe the cost, I bought parts for 25 hryvnias somewhere, I found the rest at home.

But if you estimate the purchase from scratch, then you probably need to count on 250 UAH, taking into account that you need to buy in a computer repair shop, or approx. 30 pupaars, especially expensive capacitors, exactly what you need, simpler ones are cheaper, but there will be no effect ..
But for 300W converter is also normal

This post was edited by Hierophis - 12/10/2012 17: 18

Likes: 1

11.12.2012 11:03, Hierophis

Yes, I'm shocked at how people catch this pricked drl, yesterday I turned on 40W mode for 5 minutes, and I tried not to look too hard, so everything in the room was filled with the smell of ozone and my eyes burned for two hours afterwards.
And plants from it die completely for a couple of hours of exposure.
Even DRL in a normal glass shell normally needs to be hung at least 5 m from a person, the retina also burns out from UVC!!!

In general, it is optimal to throw out the internal inverter of the housekeeper and connect only a bulb with a throttle and a capacitor, so efficiency increases and reliability increases, and most importantly - brightness!
I actually did this thing with a secret desire... for catfish fishing ! )) At night, how convenient it is, you turn on the 38W lamp and change the bait and do not steam with a flashlight)

11.12.2012 16:41, alex017

Et you now in shock, and I years 10-12nazad made a craft for the physicist from the technician from the crushed 150w drlok. This craft was in the form of a textolite with a screwed-on cartridge, throttle and fork. The cartridge was fitted with a tinplate structure with a sheet of asbestos inserted inside and a 10x40mm hole made at the arc level.
I only turned on this lamp for a few minutes! Otherwise, it smelled like ozone!
How to catch a 250W lamp I just don't understand! This is a natural nightmare. The street stinks slightly, of course, but ugh...I'm thinking where to put the uv from 18 uv compact....you'll have to cover one side with foil. My eyes are more important))
By the way, did you solder the epra according to the scheme you suggested earlier?
Of course, I will not solder, I have already bought a ready-made epra for 1tr.

This post was edited by alex017 - 12/11/2012 16: 41

11.12.2012 17:13, alex017

Well, I do not catch on the split DRL and carry dozens of kg of accumulators I will not, so I bought a low-power EPRA.
There is also one important factor. This is the time. Every DIY project is too expensive! It makes sense to make it if there are some special requirements or the cost is too high. I, for example, soldered something like a relay controller for precise control and automatic lowering of the level in an aquarium with sensors at several points of the system to protect against various unpleasant accidents. This made sense, because the finished gizmo would be prohibitively expensive and would have a controller, i.e. a microprocessor, which I consider unacceptable in such a technique.

And yet, according to what scheme did you collect it? Write down the wiring of the board here, it will be useful for people (probably).

16.12.2012 8:05, antlook

Previously, DRL was used to illuminate highways, which were later replaced with more energy-efficient ones with a greenish-yellowish glow spectrum. It was often possible to pick up a variety of insects under the lanterns. Now there is practically none, which is not due to the power of the source, the height of its location above the earth's surface, or even the radiation spectrum. They often simply don't exist!!! It is remembered as a parallel to the mass fishing for an ordinary light bulb for a car headlight with a spread sheet on the hood for convenience of preliminary analysis. As the main factors in this regard, in addition to the presence of the objects themselves, the following are listed in descending order of importance:
the presence of a minimally urbanized landscape;
windlessness, the presence of even a weak wind strongly affects the mobility of photoxene insects, this is also typical for other fishing methods, etc.;
the absence of the moon, the full moon also affects the mass of summer, which, however, can be partially compensated by cloud cover;
the presence of a stronger light source in the vicinity, and flying insects in its direction will still be intercepted by a closer one standing in the way;
it is also important to have an optimal temperature and summer period, which may differ significantly in different species, some species may be noted even in the presence of the first or small frosts;
the location of the trap depends on the terrain, it is still better to take into account the direction of natural migrations of the considered insects in the area.