Increasing the voltage converters 12 – 220v
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12-220V+USB; 250W Modified Sine waveform
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12-220V+USB; 600W Modified Sine waveform
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12-220V+USB; 250W pure sine wave
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Maximum power output
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Maximum power output
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Maximum power output
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450W power input 12V-220V USB
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900W power input 12V-220V USB
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12 V 220 V 1000W
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1500W 12V 24.3x10x4.6cm Art. 43744
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12 V 1000W 17x9x6cm
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220V/12V 600W 14x9x6cm
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12V-220V 500W pure sine wave
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Car 12/220V 200W 50-60Hz 8,2×8,9×4,7cm
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Automotive 12/220V 400-800W 50-60Hz 12.2×8.9×4.7cm
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Frequency output voltage
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12-220V 150W usb
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Recent reviews
Vitaly, 07 april 2022
The grinder 1500w, will it work? If not, please advise
Evstratov Andrew , January 29, 2022
Evgeniy , November 16, 2021 .
I bought WESTER MSW600 to power the fridge ATLANT (100 watts) when power failure. I tested it with 6ST55 battery. My fridge was started and worked 15 minutes in standard mode. Disconnected from the thermostat and turned it off. The radiator of the refrigerator (at the back) was warm as usual. Special features: The inverter squeaked briefly when the refrigerator started.
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Converter from 12 to 220 with my own hands
I decided to dedicate a separate article to the manufacture of DC AC step-up converter to 220V. Of course, it is remotely related to the topic of LED projectors and lamps, but this mobile power supply is widely used at home and in cars
Budget models of car inverters 12 to 220 volts are not particularly good sine wave output. Models helpers on 2000W, 3000W, 5000W with pure sine wave are too expensive, although they differ only by 6 transistors on the output. Make a converter from 12 to 220 with your own hands at 300-500 watts is not very rational, and make a powerful profitable, the cost in the store will be from 5000 rubles.
For DC outputs, see DC voltage step up converters.
- 1. Assembling options
- 2. Voltage converter design
- 3. Sine wave
- 4. An example of inverter filling
- 5. Assembling from a UPS
- 6. Assembling from prefabricated units
- 7. Radio assemblies
- 8. Power converter circuits
Assembling options
There are 3 optimal ways of making a 12 to 220 inverter with your own hands:
- Assembling from ready-made blocks or radio assemblies;
- making from an uninterruptible power supply;
- Using amateur radio circuits.
The Chinese can find good radionics and ready-made units for assembling DC to AC 220V inverter. This method will be the most expensive in terms of price, but it takes a minimum of time.
The second way, this upgrade uninterruptible power supply (UPS), which, without a battery in large quantities sold on Avito and cost from 100 to 300rub.
The most difficult option is to assemble from scratch, without radio amateur experience can not do without. You will have to make printed circuit boards and select components.
The construction of a voltage converter
Let’s look at the design of an ordinary step-up converter from 12 to 220. The principle of operation for all modern inverters will be the same. High-frequency PWM controller sets the mode of operation, frequency and amplitude. The power part is made on powerful transistors, the heat from which is removed to the body of the device.
At the input of the converter from 12 to 220 there is a fuse that protects the car battery from a short circuit. Next to the transistors is a temperature sensor, which monitors their heating. In the case of overheating of the 12v 220v inverter, an active cooling system consisting of one or more fans is activated. In low-cost models, the fan can run continuously, not only at high load.
Power transistors at the output
Sine wave
The waveform at the output of an automotive inverter is generated by a high-frequency oscillator. The sine waveform can be of two types:
- modified sine wave;
- pure sine, pure sine.
Not every electrical device can operate with a modified sine wave, which has a rectangular shape. Some components have a change in operating mode and can get hot and start to mumble. You can get a similar thing if you dim an LED bulb that is not dimmable. It starts to crackle and flicker.
Expensive DC AC step-up converters for 12v 220v have a pure sine output. They are much more expensive, but electrical appliances work fine with them.
An example of a converter package
Assembling from a UPS
To avoid reinventing anything and buying off-the-shelf modules, you can try a computer uninterruptible power supply, abbreviated UPS. They are designed for 300-600 watts. I have Ippon for 6 outlets, connected two monitors, one system, one TV, three surveillance cameras, video surveillance system. Periodically put in operating mode by turning off the mains 220, so the battery is discharged, otherwise life will be greatly reduced.
Colleagues electrician connected a regular car acid battery to the UPS, worked fine uninterruptedly for 6 hours, watching soccer at the cottage. The UPS usually has a built-in gel battery diagnostic system that detects low capacity. How it will react to a car battery is unknown, although the main difference is the gel instead of acid.
UPS stuffing
The only problem, the uninterruptible power supply may not like surges in the car network when the engine is running. For the real radio amateur this problem is solved. You can only use it with the engine turned off.
UPSs are mainly designed for short-term operation when 220V is missing from the socket. For long continuous operation it is very desirable to put active cooling. Ventilation is useful for stationary version and for a car inverter.
Like all devices, it will behave unpredictably when starting the engine with the load connected. The car starter sags a lot of Volts, at best it will go into protection as when the battery fails. At worst there will be spikes on the 220V output, the sinusoid will be distorted.
Assembling Prefabricated Blocks
150 Watt Booster
To assemble a stationary or car inverter 12v 220v with your own hands you can use ready-made blocks, which are sold on Ebey or from the Chinese. This will save time on making the board, soldering and final adjustment. It is enough to add a housing and wires with crocodiles.
It is also possible to buy a radio constructor, which is complete with all the radio components, all that is left is to solder.
Approximate price for fall 2016:
- 300w – 400rub;
- 500w – 700rub;
- 1000w – 1500rub;
- 2000w – 1700rub;
- 3000w – 2500rub.
To search on Aliexpress, enter “inverter 220 diy” in the search box. The abbreviation “DIY” stands for “do-it-yourself assembly”.
500W board, output 160, 220, 380V
150W
Inverter 50 watt
Auto inverter 300w
Radio assemblies
The Radio Constructor is less expensive than the complete board. The most complex elements can already be on the board. Once assembled, there is almost no tuning required for which an oscilloscope is needed. The range of parameters of the radio components and the ratings are well chosen. Sometimes in the bag put spare parts, in case of inexperience tear a leg off.
The 1000W Radio Constructor
Radio booster for 2000 watts
Powerful Inverter Schematics
Powerful inverter is mainly used to connect construction power tools in the construction of dachas or fazenda. Low-power 500W inverter from a powerful 5000 – 10000W one differs in the number of transformers and power transistors at the output. Therefore, the complexity and the price are almost the same, the transistors are inexpensive. In terms of power it is optimal 3000w, you can connect a drill, a grinder and other tools.
I will show you some schemes of inverters with 12, 24, 36 to 220V. It is not recommended to put these in a car, you can accidentally damage the electrics. The circuitry of DC AC 12 to 220 converters is simple, the master oscillator and the power part. The generator is made on the popular TL494 or analogues.
Many of the 12v to 220v step up converter circuits for making them with your own hands can be found at http://cxema.my1.ru/publ/istochniki_pitanija/preobrazovateli_naprjazhenija/101-4. About 140 circuits are available, half of them are step up converters from 12, 24 to 220v. The power range is from 50 to 5000W.
I need to use an oscilloscope to adjust the circuit, it is desirable to have some experience with high voltage circuits.
To assemble a powerful 2500W inverter you will need 16 transistors and 4 suitable transformers. The cost of the product will be considerable, comparable to the cost of a similar radio design. The plus side of this cost will be a pure sine wave output.
Сергей, здравствуйте! У меня вопросик: есть DC12->AC220 converter for 300W, I power my computer with it. Everything works fine for about 1-2 hours (consumption of about 120W). But when converter lacks power, it makes a wild squeak and immediately cut off output. This leaves about 11.5 volts in the battery. The converter is Chinese, but it looks quite good. The question itself: why does this happen if the battery still has a lot of power and how to improve this case, so that the converter sucked energy at least up to half. Ideally it would also squeak a little before it dies Thanks a lot for any help!
At 11.5 volts, the battery is low and the converter doesn’t have enough power to work, so it shuts down.
Hello. Can you please tell me if it is possible to connect the battery to the converter at the output connect the PSU, and connect the battery back. Create a so-called closed circuit. Will the system work?
It is better to try, this will be more reliable.
Hello Sergey, Sergei, a lot of schemes inverter, all have their shortcomings, but one of the most important criteria for selection (in my opinion) is the consumption of the inverter without load, for example, I have a pure sine inverter 1000w, works fine, runs any tool and household equipment, but the current consumption without load 8 A. Batteries are charged by solar panels, for a day, it can land anything, I would like you to advise the most economical option inverter, in the range of 12/220 from 1000 to 3000kW. Thank you!
That’s for you in the alternative power supply forum. Haven’t seen any tests or reviews on no-load current. You picked an unfortunate 12 volt voltage to work with solar panels. A minimum of 24V or 36V is best, the efficiency of the inverter will increase.
Good day! Sergei, please advise such a question. If you take 12 volts from the household network through a rectifier (for example, 300 watts) and power the inverter, which consumes 12 volts and produces 3000 watts, you can save electricity and pay 10 times less? Is this true? I would appreciate an answer!
It won’t work that way. It will consume 4000w and give 3000w.
My dear Sergey, I, an old amateur (started in the late forties with old glass lamps, trophy E-series and universal RW12/2000), first came across your site, and I like it. Very practical tips, understandable for beginners, a lot of materials and different. Thank you, and success to you.
It’s good that you liked the content.
I’m just laughing. Modified sine wave, how? A sine wave is a sine wave in Africa, how can it be modified? You make me laugh. You can even come up with some kind of joke or anecdote.
There is a rectangular sine wave, there is a Chinese sine wave, there are many variations.
This circuit is made with domestic components and is quite old, but that doesn’t make it any less effective. Its main advantage is that it produces a full AC voltage of 220 volts and a frequency of 50 Hz.
There are different circuits.
Hello Sergei, your schemes are so cool, smart and convincing! But with my 70-something years of age it is not easy to grasp it all. I need… I need a circuit for a converter with 54 or 100V DC to 220 AC output 200W. Payment guaranteed. Thank you.
I can’t help you, I don’t do that kind of trivia. This unit is easier to buy a model called B900W, 3 weeks ago I ordered one, costs 1200 rubles.
“The UPS usually has a built-in gel battery diagnostic system that detects low battery capacity. How it will react to the car battery is unknown, although the main difference is the gel instead of acid.” – What a persistent popular ignorant misconception about “gel batteries” in a UPS. There are no gel batteries! They use AGM batteries, in which the normal electrolyte is “soaked” in a glass cloth between the plates (Google to help). “The battery diagnostic system” in the UPS treats a car battery as if it were its own.
“Like all appliances, it will behave unpredictably when starting an engine with a load connected. The car’s starter will drop a lot of Volts, at best it will go into protection like when the battery fails. At worst there will be spikes on the 220V output, the sinusoid will distort. – The UPS just shuts down right away when you start the starter, so there won’t be any more surges.
“The only problem, the uninterruptible power supply may not like the spikes in the car mains when the engine is running. For a real radio amateur this problem is solved. You can only use it with the engine turned off.” – A UPS like the one in the picture (Ippon) works fine with the engine running.
There are different types of uninterruptible power supplies, old and new.
Where can I buy a radio set that comes complete with all the radio parts?
