Best transformers for 2020

The overwhelming majority of household electrical appliances and equipment need a standard voltage of 220 V, which is provided by an ordinary socket located in the room. Sometimes situations arise when you need to connect a device that requires less voltage. These include low-voltage heaters, halogen lamps, LED lamps and much more.

To solve this problem, a step-down transformer is installed. It will not be difficult to purchase it in the nearest store, on the market, or on specialized Internet resources, if you wish, you can make it yourself. They are ubiquitous in almost every field of activity. Power units are mounted at substations and power lines. Step-down devices reduce 380 V to, for example, 220 V. They are called industrial step-down transformers.

Household workers work with less voltage. They convert 220 V to 42, 36, 24 and 12 V.

How does it work?

The device includes a ferromagnetic core and two windings. The division is due to the principle of action. The primary, in contact with the power grid, creates a magnetic field that crosses the turns of the secondary winding. There should be no contact between them. More turns in the primary will create a lower voltage. As a result, an electromotive force arises, generating a voltage that differs significantly from the input voltage.

Its performance is affected by the number of turns. The work is accompanied by inevitable losses amounting to 3% of the power.

The overwhelming majority of electrical household appliances require an AC network to operate. As a rule, step-down transformers are housed in a special case. But this is largely determined by its purpose and model and, of course, by the manufacturer itself. This is due to the fact that they act as constituent elements of most power supplies, stabilizers and other similar devices. Models with multiple terminals on the secondary winding are common. They won public recognition due to their versatility and versatility.

What are they?

The need for these devices served as an impetus for their improvement and division into types according to the tasks performed.

1. Toroidal. It has a torus-shaped core. Used when small capacities are required. The device is characterized by small dimensions and low weight. This kind of design allows a good current density to be obtained because the winding on the core cools quickly. At the same time, it has the lowest indicators of magnetism. The main area of ​​use is electronic devices.
2. Rod. They have a different design. Its features include a winding covering the core of the magnetic drive. Simple construction makes winding insulation and repair easy. The main advantage lies in the cooling at a high level, due to which fewer wires are needed for the windings.The main area of ​​use is medium and high power devices.
3. Armored. They are classified as low power. The magnetic drive covers the winding and acts as a kind of armor. In all other respects, it is the same as the pivot. The exception is low power. They are inexpensive and have fewer coils.
4. Multi-winding. The most common are two winding 1 phase devices. With the help of several secondary windings on the core, different voltages are obtained from the step-down transformer. The windings differ in the number of turns and the voltage they produce.
5. Three-phase. In production, 3 single-phase transformers are used, placed on one core. The magnetic fluxes are balanced and add up to zero. The windings are delta or star connected. The latter is characterized by a common outlet for all phases. The triangle uses a series connection of all phases in a ring. Three-phase models are necessary to reduce the voltage in a three-phase network. They are widely used in industry and everyday life.
6. Single-phase. Zero and phase are located on the primary winding. The most common type of device.

Why is the popularity of electronic transformers increasing?

Technological advances have contributed to the emergence of electronic step-down transformers on the market. In comparison with the classic ones, they have a number of advantages. This contributed to their consolidation in the market and their gradual introduction into the everyday life of an ordinary user.

One of the main features is the design. The usual coils and cores have been replaced by precision microcircuits, capacitors, resistors and other precise components. The use of this kind of device has its negative and positive aspects.

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How to choose?

A number of criteria determine the stability and quality of the transformer. These include.

1. Input voltage. To determine its value, it is enough to study the marking on the case, 220, 380 V. The first one is enough for an ordinary consumer.
2. Required current level. It is determined by the purpose and environment of use. In most cases, it is 12 or 36 volts. There is a special marking on the body that displays the value.
3. Power. To determine it, calculate the sum of all devices that will connect to it, plus 20% of the received value.
4. Safety. A high-quality device can withstand sudden changes in the network and other emergencies. To do this, it must have protection against short voltage, surges, overloads and other things. The presence of this kind of protection guarantees stable operation in any conditions.

Best step-down transformers for 2020

Gals ET-190E 60W

The device is designed for low voltage halogen lamps (12 V). The maximum power of the transformer is 60 W. The device operates on a regular household network (220 V). The maximum length of the wire to the lamp should not exceed 2 meters.

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CVGaudio T-20/16

A step-down transformer is used in speaker systems (16o hm) that are connected to the broadcast line. The device is equipped with four outputs for tapping different power and connects a speaker with a rated power of 20/10/5 / 2.5W in 100V mode. It has 2 legs, which, thanks to special holes, can be fixed to the audio system cabinet. Its recommended wattage is 30-50W (16o hm).

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TR-08 8V AC

The small compact device is designed to power household appliances that do not require a stabilizing voltage, the maximum power of which is 8V. It is allowed to work together with the stabilizer.

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The best step-down transformers for halogen lamps

Lightstar 517250 UNI

The novelty from the famous Italian brand Lightstar has received a stylish design that fits perfectly into almost any interior and does not stand out at all. Smooth start-up and three-stage protection ensure trouble-free operation of halogen lamps. The minimum power is 50 V.

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ET 190 B Ecoline

The model is made in a plastic case and is designed for use in combination with low-voltage halogen lamps with a maximum power of 12 V. The kit includes a 2 m wire.When installing, do not forget about free air circulation, otherwise the temperature will exceed the permissible limits and the transformer will quickly come out out of service. The maximum load should not exceed the specified in the technical operation.

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FERON 250W 220-12V TRA110

A novelty from a Chinese brand that has proven itself on the positive side. The company has been on the market since 1997 and during this time has competed with European and American brands. This became possible due to the fact that they adhere to the principle of "providing the consumer with a quality product for little money."

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Best step-down transformers for 2020 for LED strips

Flesi 240 / 12V

Will become an indispensable assistant in the design of LED clip light for home decoration or playground. With him you can not worry about the safety of your garland. The maximum power is 300 W. There is the possibility of connecting 6 beams, each of which can be connected to 38 watts.

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360W 410 360 Lightstar

Product of an Italian company with a power of 360 watts.The power of the output voltage is 12V. The maximum permissible tape length is 5 m.

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REXANT 200-200-2 200W

A compact multifunctional device that supports power supply of LED strips and other decorative lighting elements. The power supply unit, accepting 220 V, outputs 12 V.

Equipped with overheating and short circuit protection. The use of advanced developments in the field of technology has made it possible to qualitatively increase the stability of work. The aluminum case protects the functioning radioelements from accumulated heat.

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The best transformers with a change of 220-12 / 24V

OSO-0.4 kVa 220 / 24V

Domestic product from Kostroma. The transformer is designed to operate in closed rooms with a stable temperature, the sun's rays should not fall on it.

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TS40 / 12-24C

It belongs to the category of modular components System pro M compact and is also used in extra-low voltage power circuits with a maximum power not exceeding 40 V. Accidental contact with the secondary winding is allowed.

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Neon-night 220-24 V, 30 W

The transformer from Neon-Night adapts the voltage to the consumer who needs a low-voltage power supply. Due to its low weight and reputation of the company, it is widely used where long-term service of lighting fixtures is important. To start it, it is necessary to supply a load to it, in other words, a permanent connection of the bulbs to the network is required. The lighting is switched on / off using a switch built into the primary circuit.

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The best transformers with a change of 220-110 V

Robiton 3P100

Power supply for electrical appliances with a voltage not exceeding 110 V. The maximum output power is 100 W. It is equipped with overheating, short circuit and overload protection.

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ATS220 / 100-100

The Polish toroidal transformer is designed for devices that require 100 - 120 V for their operation. It is equipped with an additional Japanese or American outlet, since most devices of this power come from those places. This saves money on the purchase of an additional adapter.

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The top includes the best representatives of their class.They have won the trust of consumers in the market due to their high quality level and affordable prices. Together with them, you can not worry about your electrical appliances.