A simple led lamp — lighting for the drill press
Hello, dear friend!
I have stanochek to drill drilling of printed circuit boards and very much lacked illumination, had a table lamp to illuminate, that is not convenient. And here was a free evening and decided this highlighting to create.
Generally, the thought does not pull this topic to the post. But still, novice Amateurs and Amateurs LEDs would be interesting. A couple of years ago to collect this lamp, it seemed quite difficult. Yesterday I collected a couple of hours with the unit in its place. Immediately stipulate that for the lighting of rooms on the brightness of these lamps will be weak, but for light duty at the entrance or somewhere else, most it. Although most of the cheap Chinese lamps from the online stores is collected in such a scheme (even simplified).
Schematic diagram of the lamp
It is well to understand video.
And the scheme pulled from the same place.
The capacitor C1 is taken from the table based on the number of LEDs and the required current.
Table for selection of the capacitor C1
It is convenient to make a lamp according to this scheme in the case of the failed "seragaki", such as here.
I took 12 3528 LEDs, diode bridge.
R1 — 100 Ohms as in the diagram, it serves as a fuse and does not dramatically skaknut current at the time of inclusion. Resistance which discharges the capacitors after switch-off: R2 — 750 Ohms, R3 — 47kω.
Capacitors: C1 — 0.33 UF x 600 In (it is better not to take the voltage below 400 V) C2 100 µf, 50 V. On the chain of our LEDs is about 12 x 3 = 36 V. So I got two Zener: 24 and 15 V, i.e. the voltage can not rise above 39 In that will protect the capacitor C2 from power surges and if the chain of LEDs will be disconnected from the circuit.
Safety
As correctly noted RamirezRodriguez in the comments. The circuit is not galvanically isolated from the network in the socket. Therefore, all conductive parts of a circuit must be well insulated or placed in a dielectric housing.
Board for the power supply circuit and the workpiece circuit Board for led
Ready Board for LEDs
Have Nepal details on the Board
Ring with LEDs
Set everything in its place
Something like this to work, the reality is not as bright as it looks in the photo
Now I have a boring stanochek with angel eye! And you success in all your endeavors!
Thanks for the article, I'm convinced. Probably, flood polièfirkoj ring away from sin.
cool-hacker
At first, too, about the isolation of thought. Yesterday touched with wet hands and nothing. The capacitor will not allow more than 20 mA, what would happen?
Here, read about safety at the end of the article about a similar scheme: easyelectronics.ru/kondensatornoe-pitanie.html
And, please, never touch any contacts on the card.
k1rra
Well, theoretically, nothing)
But in fact — and the Bang)
Possibly Bang. And almost even more so.
At first, too, about the isolation of thought. Yesterday touched with wet hands and nothing. The capacitor will not allow more than 20 mA, what would happen?
The radio frame 700 rubles worth one, all with the collection of about 2,000 motor, base, collets;
I gave him one good man, when he learned that the Board was doing. So I puzzled over this question. There like some kind of signboard of the factory is, but at the same time it is evident that some of the details of homemade :)
You are right, I already agreed with these arguments and will saibainuo ring, thank you
the engine doesn't have bare contacts under tension, right?
but the chances of accidentally get a hand in lamp, is not zero.
after all, you need a minimum charge to cover the ring of Plexiglas.That was not even a theoretical possibility to climb hand. Avoid.
as the saying goes, "better safe than sorry, said the nun putting on the 3rd candle condom" :=)
There is a distance to the Board you want to highlight, not more than 10 cm, so the light is enough. About the food maybe you're right. But there is still a healthy engine from a 220 volts feed on the side of the machine attached to a huge capacitor for the motor, so this machine at all particularly dangerous to life and health :)
the 3528 LEDs — by 70мВт — not serious at all. You should at least 5050 to take, or even any more interesting. Well, Konstrukcija fed from the mains directly and without isolation, very dangerous. Since I took 12pcs 3528 total power 0.84 W, to power them have a "clean" source such as the charger from mobile, changing the switching to a lower voltage. Certainly it would be safer
I do not ask this question, and measure nothing
if even just a little runout at the end of the drill, the drill just break at this thickness
himiks
beats no this connection?
0,8 certainly not break so stranse as 0.6-0.7. Just under 0.6 is necessary to drill
how many microns biennia drill under 0.6 mm?
Is a little bit, then I'm a little twisting and bends the drill) But when you start drilling (drill bit is included in the material) is not the beats)
beats no this connection?
0,8 certainly not break so stranse as 0.6-0.7. Just under 0.6 is necessary to drill
Yes, clamp. Still have the collet Chuck, which is clamped in this, and then Chuck in a small drill.
Well ka show me this miracle of a soldering iron with illumination. Very interesting.
That is drilled in the dark, and to solder immediately the buzzing and rotating the drill bit.
Very sorry, but do not tell. Bought the coils in Ukraine. On ledway.ru see reviews of the sellers (seen somewhere). And here someone was reviews.
5730 tried to illuminate the interior dimensions and trunk. Thing! That still would have been very grateful if I have given links to Chinese sellers (Ali, eBay) with really polovinnyi white 5730.
this 5730. For your I was just. And on account of a thick PCB and efficiency 3528 you should think.
I work hard more, well, svetilnik powerful. 75 volt voltage drop and a current of about 100mA.
i65.fastpic.ru/big/2015/0...d4a8102c30d386404d28a.jpg
By the way, the PCB is thick, if properly understood. And 3528 have to let go.
Yes, but that's the time installation takes much less often and reliability is higher, because in the Assembly, the diodes are selected according to the parameters better than alone.
and what a diode bridge is used, to what it current is? I recently collected them myself from a large inventory of N4007 diodes they are up to 1A.
svetliydom
Lucky you. I dream at least about the drill press, but there is no place to put it...
The main desire I have beside the bed for a whole year's worth of band saw !
cool-hacker
Well, it is possible to make small stanochek almost from scrap materials, on the drive saw a few options. Well, yeah... the Problem is, I have no garage, the apartment is small. From the wife regularly received offers to move me along with all my stuff to the entrance :)
xD
Well, it is possible to make small stanochek almost from scrap materials, on the drive saw a few options. Well, yeah... the Problem is, I have no garage, the apartment is small. From the wife regularly received offers to move me along with all my stuff to the entrance :)
Lucky you. I dream at least about the drill press, but there is no place to put it...
With their hands — it's good!
The cut lacquer or Plexiglas put. No access to the network and suddenly the shavings on the machine housing and the ring closed? Although the Board sculpting... go.
with Ali, you can order ready-made drivers to the junction. I did so when I compared the price on them and how much would it cost to collect (not enough parts), but looks neat and stabilization is.
The design is such, but it should not burn, because the current of approximately 18 mA
sucks only one thing, when one with the first bulbs will burn the other will not work :( But so good.
Thank you. Is also an option. I took a feed directly from the network, even when the engine is off. I prefer.
The idea is wonderful. Do yourself, but a little differently: are driver with "Ali" 220/12V and 300 mA. Three LEDs 5050. More and is not necessary, in my opinion. Machine factory, Sturm, there is plastic protection on it and will fix. Driver energized from the relay start the engine, I think it'll work well.
Yes he is not perfect at all) Took a couple of suitable Krajicek in the kitchen, did a couple of circles with a marker. Drilled a bunch of holes in a circle inside the same stanochek. Outside a hacksaw cut and then file all brought to mind.
I agree, 100µf 12 LEDs sure everything will smooth out. The idea of placing the LEDs I liked, but diet can and improve. By the way and than cut such a perfect circle?
Pulsations of light not — they smoothes C2 100 UF. And the driver, but would like your in the same evening)
The design idea is good, and the wiring diagram is not very much. Likely to be the pulsation of a light stream and can cause a strobe effect. Drawdown of the supply voltage, the brightness will fall. All problems solve ready driver.
AndyEr
Brilliant! You can cut 2 rings (outside "+" for example, and inside "-" ) and bust them in parallel, not sequentially. Plus, would the ability to add diodes in some places if necessary!
And so — the idea is great, the PCB is. Left surlily machine buy))))
Easier to connect consistently. When connected in parallel each led needs a current limiting resistor.
Brilliant! You can cut 2 rings (outside "+" for example, and inside "-" ) and bust them in parallel, not sequentially. Plus, would the ability to add diodes in some places if necessary!
And so — the idea is great, the PCB is. Left surlily machine buy))))
A perfect circle cut out sooo just with crowns encrypted-tbn2.gstatic.co...IBqkUYlUK7q7FBrzpDmb9uwTN just holding not one, but 2 laps.
As they say: — "the Russians have translated the Kama Sutra and called the mother of invention"