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Transformers

Products: 4
Transformer 230 / 24 V AC...

Transformer 230 / 24 V AC 15 VA type TRM-24

TRM-24 transformer manufactured by Zamel. The maximum output current is 0.625 A AC and the rated secondary voltage is 24 V AC . It has 4 connection terminals. Its housing...
5.0 (1)
Index: ZML-19821
Index: ZML-19821
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Regular price €15.50 Price €15.50
Converter voltage 230V/110V - 2000VA

Volt VP-2000VA - transformer 230V/110V

The transformer is used to lower AC 230 V to AC 110 V or to increase the AC voltage. Its construction is based on modern components. The casing is metal, black, has a...
4.9 (16)
Index: HUR-15232
Index: HUR-15232
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Regular price €60.50 Price €60.50
Toroidal transformer Indel...

Toroidal transformer Indel TST20/006 20W 230V/2x14V

Toroidal transformer made by Indel. The primary voltage is 230 V, the secondary is 2 x 14 V. The power is equal to 20 VA.
4.5 (2)
Index: MOD-07878
Index: MOD-07878
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Regular price €28.90 Price €26.01
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Indel toroidal transformer TST35/001 35W 230V/12V

Transformer toroidal Indel TST35/001 35W 230V/12V

Toroidal transformer by Indel with a diameter of 75 mm and a height of 32 mm. It is powered by 230 V . Output voltage is 12 V and current consumption is 2.9 A. The...
4.8 (6)
Index: TME-16253
Index: TME-16253
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Waiting time: 1-2 weeks
Regular price €25.50 Price €25.50

See also

Change for better

When building or designing, for example, a lighting system, we will have to face how to power our model. We will then encounter a device called a transformer, thanks to which we will power the components of our system. The principle of operation of this device is to transfer alternating current electrical energy by induction from one electrical circuit to another, maintaining the original frequency while changing the electrical voltage. During the transfer of electricity, losses are minimal, so the current (apart from the voltage) does not change.

Adjusting the voltage to your needs

What is changed is the voltage, for example from high voltage, which is used for transmission in the power grid over long distances, to low voltage suitable for powering final receivers. Transformers are made of two basic elements - a steel core and windings made of copper or aluminum. The most commonly used type of winding is cylindrical winding, where the primary and secondary windings take the form of concentric cylinders. The transformer core is made of columns and yokes.

How does a transformer work?

Transformers are designed to change electrical voltage, but how do they work? One of the windings is connected to alternating current, which creates an alternating magnetic field, the flux of which, conducted by the core, flows through the other coils. Changing the magnetic field flux in the coils causes electromagnetic induction, i.e. an electromotive force, also known as voltage, is created in them. If a transformer has fewer secondary windings than primary windings, it induces a lower voltage, and this type of transformer is called a step-down transformer. The principle of operation of the primary winding is based on induction in the magnetic core (excites magnetic flux). Moreover, the voltage in the primary winding is sinusoidal. In the case of the secondary winding, we are dealing with voltage generation. The material of the winding itself is primarily copper or aluminum. The selection of the transformer (including the number of turns) should be adapted to the specific type of device (power requirements)

Types of transformers

Depending on the application, we have different types of transformers. Polyphase (three-phase) transformers are used in polyphase current systems. You can also find plane, toroidal, safety transformers and many others. For low voltages, transformers are insulated with air, for higher voltages, transformer oil is used, which also serves as a cooling agent. In the industry and in everyday language, we can often come across the name shortened to trafo.

Transformers - FAQ

Using a transformer with a lower power will provide a lower charging current. Care must be taken to ensure that the transformer does not overheat. Toroidal transformers have lower leakage inductance, which makes them easier to overheat if the system does not provide current limiting.

LED strip lights can be powered by LED drivers , but longer types should be powered by an LED transformer. Although LED drivers provide a constant output voltage, longer strips require more power to operate at maximum efficiency.

Welding machines with resistance wires are paired with transformers with a really wide power range. Some have simple and others have complex control systems, but due to their design, they must be provided with sufficiently high power supply.

A suitably large and current-efficient mains transformer, for example the Volt VP-2000VA , is the basis of the project. The simplest and most common design is a stereo amplifier. Inside the housing there is one power supply with a single mains transformer and two amplification paths on a common board.