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DIY inverter from 12V to 220V

Electronics
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DIY inverter from 12V to 220V

In this project, the Master will present us with his autonomous inverter. The inverter is battery powered and converts 12 V DC to 220 V AC. The power of the device is 70 watts. Duration of operation at full power is about 20 minutes. For the price, the device cost the author about $ 5. The device can be used, for example, if you need to work with a soldering iron or a glue gun, but there is no electrical outlet nearby.





Tools and materials
- 12V fan;
-Lithium polymer batteries;
-Inverter module (;);
-Socket;
-Switch;
-Connector;
-Wire;
-Rubber legs;
- fiberglass;
- Orgsteklo;
-A circular saw;
-Drill;
-Crown on wood;
-Glue;
-Soldering iron;
-Insulating tape;
-Double sided tape;
-Drill;
-Nadfil;
-Thermotube;
-Lighter;
-Led indicator;










Step one: blanks for the body
For the body, the master cuts from plexiglas 5 mm thick plates: 100 mm * 65 mm -2 pcs.,
100 mm * 57 mm -2 pcs.

Fiberglass plate: 65mm * 65mm -2pcs On one of the plates from fiberglass cuts a hole with a diameter of 5 cm.







Step Two: Batteries
To power the inverter, the master used three lithium-polymer batteries of 3.7 V. Each battery is glued together in one unit. Connects in series. Leads wires and isolates contacts. The output receives a battery of 12 V 2200 mAh.







Step Three: Connect the Battery
Solder the battery wires to the inverter. Negative wire directly, positive through the switch.


Step Four: Build
Removes a protective film from plexiglass. Sticks double-sided tape. The battery sticks to the tape. The inverter module sticks on top of the battery.





Drills ventilation holes in the side plates of the housing.



The top cover makes holes for the switch, connector and LED indicator.




In one end cap, cuts a hole for the outlet, in the other under the fan.






Solder the wires: + charging connector to + battery, - connector to - battery. The fan and LED indicator are powered via a switch. Solder the wires to the output of the 220 inverter, the second ends are screwed to the outlet.









Glues the fan to the end cap.


Glues the case.









The inverter is ready, tests showed good results.



The entire process of manufacturing an inverter can be seen in the video.
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29 comments
0
Reply To quote A complaint
Rubles are probably American. )))
Author +1
Reply To quote A complaint
You can discard the link where there on Ali inverters distribute 100 r and even with the case
0
Reply To quote A complaint
This is a miracle! And I did not know what to do with the old inverter! I ordered with Ali, along with a box for 100 rubles, but here it turns out! I’ll throw it out, I’ll be fucked according to this scenario
+1
Reply To quote A complaint
This element has flat polymers installed, just installed in a suitable case. This is so, for information to people.
+2
Reply To quote A complaint
And I don’t complain, I just want to know the subtleties.
Author -1
Reply To quote A complaint
Well, I'm talking about size and polymer. Where did the author get his batteries? he writes in a laptop. As for the module, Ivan said. On YouTube in his channel he is asked a question. The answer is “This scheme is available in a joint or commercial market, Sadar, Karachi, Pakistan, to be precise where I got it from.” Maybe it costs 3 bucks there. But these are all particulars. I understand that, for example, you are not interested, but someone will do it and will be glad.
Author -1
Reply To quote A complaint
You are not the first -
admin February 2, 2017 11:53 AM 0
A complaint
Smart backpack on Arduino
The author of the article is not obliged to answer this question; he only acquainted us with the home-made work of a foreign comrade.
+2
Reply To quote A complaint
pogranec,
What claims, you just need to at least slightly understand what the article is about. And so I'm in a stupor. Why, how and why. Why should I jump over my head. You rewrote the article, and questions rained down on you. I also do not know the language of the author.
0
Reply To quote A complaint
pogranec,
This is not the original 18650, there is a polymer inside and a charge controller through micro usb)) I disassembled such elements personally and not only in this standard size.
Author -1
Reply To quote A complaint
In this type-size, and even in laptop batteries there is no lithium polymer, there is a lithium ion.
- this is the size for you, but not notebook ones, but I don’t see the author any reason not to trust, you can put the battery in any case. And this is not his only homemade product and everywhere points to Lithium polymer cells
-1
Reply To quote A complaint
I agree about the power. And adapters for any electromech.
+2
Reply To quote A complaint
An adapter for what ?. Phone to charge? And what, for this, you need to "get" 220 out of the batteries, and then from it, get back 5 volts for the phone ????
My opinion - in the first place, has not changed. Pampering all this! The converter, in order to be truly, practically required, should give out at least 500 watts.
-1
Reply To quote A complaint
Valery,
Well, for example, an adapter with a transformer. We are very good at buying adapters with transformers, the price is captivating.
0
Reply To quote A complaint
Why is HERE a pure sine wave ??? What is a consumer, for example, with an induction motor that can be included here? ))))) Or something else that fits into this power, but requires a "pure sine" for operation ???? ))))
... My opinion is that it is not needed at all)))). Unless, for the sake of "cool happened" ...))))
+1
Reply To quote A complaint
In this type-size, and even in laptop batteries there is no lithium polymer, there is a lithium ion.
Lithium iron phosphate still believe it.
So what is the way out?
A sine wave or a modified sine wave, you probably know that there is a very big difference?
+2
Reply To quote A complaint
Quote: pogranec
208 p. with delivery
So this is 40 "Ketai" watts, and not 70 declared. This is the simplest push-pull transformer oscillator, its efficiency is 0.8 at best.Transistors without radiators dissipate a maximum of one watt, so that its output power is not more than 8 watts.
Author -1
Reply To quote A complaint
My article is my article written by me personally and not copied. All questions in the article.
Everything is tried and tested.
And you buy a bank for 6-7 Ah for 100 rubles.
-Dear, let everyone will do his own thing. If you have a claim to writing an article, voice it. If to the device, questions are addressed here "Karachi, Pakistan." although I try to respond as much as I can. But the bank or the inverter is measured better than the store, the store will still be in a beautiful case and with a guarantee.
Author -2
Reply To quote A complaint
Well, where are these batteries in this size?
-Lithium polymer cells (Mine are from an old laptop battery) Lithium polymer cells (mine from an old laptop battery)
+1
Reply To quote A complaint
Is there a sine output or what other signal?
the master used three 3.7 V lithium-polymer batteries

Well, where are these batteries in this size?
0
Reply To quote A complaint
My article is my article written by me personally and not copied. All questions in the article.
Everything is tried and tested.
And you buy a bank for 6-7 Ah for 100 rubles.
Author -2
Reply To quote A complaint
And how does this homemade product differ from your bank? The fact that there is one module with Ali and you have two? Or did you bring your device diagram? So it was possible to turn a bank in a store to buy with a guarantee and not to bathe.
+2
Reply To quote A complaint
Well damn it, the topic is not revealed! I went in for joy, I thought it was interesting, I repeat. There is emptiness ...
We copied pictures and opa article.
At least see the block diagram.
It’s easier to buy for 1200 rubles in the city at 150 watts with a one-year warranty and in an excellent case.
Author 0
Reply To quote A complaint
I saw that this is probably the admin indulging in links.
he can’t cost 3 dollars.
-
You can and a cotton candy machine, or maybe someone needs such an inverter.
+1
Reply To quote A complaint
pogranec, by the link that was in the article, I don’t know whose it is, I can’t verify this. Whatever the inverter module may be, it cannot cost $ 3.
I don’t know about the charge of the batteries, as he probably charges them
The author did not write, but it is clear that through the external connector, but this is a slow battery killing.
Yes, and without a battery, you can, as an example, take a design and make an exit under a / m, or turn a bank (if there are 12V outputs there) for example.
And you can still make a cotton candy machine. We are discussing a specific product.
Author -3
Reply To quote A complaint
What is my link? I did not give a link to the board. But for example, look maybe it’s cheaper if you look. Since this is 150 watts, the author has 70 watts. I don’t know about the battery charge, he’s probably charging them, or maybe his uncle works at the battery factory. Yes, and without a battery, you can, as an example, take a design and make an exit under a / m, or turn a bank (if there are 12V outputs there) for example.
+1
Reply To quote A complaint
Yes, and to the point: in laptops, batteries are protected and controlled by a separate board, they themselves are unprotected, which means that in this product they are not only charged, but also discharged normally. Not, of course, if we consider this as a toy for 10-20 uses, which will fail at the most inopportune moment, then - please!
+5
Reply To quote A complaint
According to your link, the price is 1 051.79 rubles .. And also a socket, fan, button, we don’t take the rest - let there be "gifts of nature". ;) The price of the kit is 1200 rubles minimum.
You have something expensive nowadays, don’t buy a couple of thousand on occasion at such a favorable rate? yes
Author -2
Reply To quote A complaint
Well, there are plenty of such modules in Ali, choose to your taste.
+13
Reply To quote A complaint
The story of how to make a box, stuff an anonymous module with unknown parameters there and the battery without the ability to charge it normally. And for only 5 dollars!

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