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Transformers

A comprehensive range of power transformers to suit various electrical and industrial applications. Whether you need tapped, multi-tapped, toroidal, or step-down transformers, our selection provides reliable and efficient power conversion for homes, businesses, and specialised equipment.  Built with high-quality materials for durability and long-lasting performance, our power transformers guarantee stable and efficient power conversion

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240V to 24VAC 150VA Lighting Transformer - Folders
$95.90

Powertech 240V to 24VAC 150VA Lighting Transformer

Powertech

Enough to run 3 x 50W, or 5 x 20W and one 50W, or 7 x 20W, all of these must be 24V rated.- Transformer must be mounted inside.- Output is via...

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$95.90 - $95.90
$95.90
$95.90
$95.90 - $95.90
$95.90
250W 240 - 120V Isolated Stepdown Transformer - Folders
$299.00

Powertech 250W 240 - 120V Isolated Stepdown Transformer

Powertech

Quality fully-enclosed stepdown transformer with fold up metal carry handles, approved 3-wire power cord & US style 3 pin 110 - 120V socket (...

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$299.00 - $299.00
$299.00
$299.00
$299.00 - $299.00
$299.00
9V-0-9V 20VA Toroidal Transformer - Low Profile - Folders
9V-0-9V 20VA Toroidal Transformer - Low Profile - Folders
$41.90

Powertech 9V-0-9V 20VA Toroidal Transformer

Powertech

WHY A TOROID?- Smaller size and weight to meet modern slimline requirements- Low electrically induced noise demanded by compact equipment- Hig...

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$41.90 - $41.90
$41.90
$41.90
$41.90 - $41.90
$41.90
15V-0-15V 20VA Toroidal Transformer - Low Profile - Folders
$41.90

Powertech 15V-0-15V 20VA Toroidal Transformer

Powertech

The Toroidal transformers is now accepted as the standard in the industry, quality mode to ISO 9000 overtaking the obsolete laminated type. Indus...

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$41.90 - $41.90
$41.90
$41.90
$41.90 - $41.90
$41.90
5W Line Speaker Transformer - Folders
$14.90

Powertech 5W Line Speaker Transformer

Powertech

Designed to tap 100V (or 70V 1/2 power) public address amplifier lines to use an 8speaker. Made with grain oriented steel for good frequency r...

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$14.90 - $14.90
$14.90
$14.90
$14.90 - $14.90
$14.90
15-30V 30VA 1A Multi-Tapped - Folders
15-30V 30VA 1A Multi-Tapped - Folders
$29.90

Powertech 15-30V 30VA 1A Multi-Tapped

Powertech

Traditional laminated iron core transformers suitable for new projects, hobby projects or as a  replacement in existing equipment. They have a th...

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$29.90 - $29.90
$29.90
$29.90
$29.90 - $29.90
$29.90
12V-0-12V 160VA Toroidal Transformer - Folders
$99.90

Powertech 12V-0-12V 160VA Toroidal Transformer

Powertech

WHY A TOROID?- Smaller size and weight to meet modern slimline requirements- Low electrically induced noise demanded by compact equipment- High e...

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$99.90 - $99.90
$99.90
$99.90
$99.90 - $99.90
$99.90
12V-0-12V 20VA Toroidal Transformer - Low Profile - Folders
$41.90

Powertech 12V - 12V 20VA Toroidal Transformer

Powertech

WHY A TOROID?- Smaller size and weight to meet modern slimline requirements- Low electrically induced noise demanded by compact equipment- Hig...

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$41.90 - $41.90
$41.90
$41.90
$41.90 - $41.90
$41.90
18V Centre Tapped (9V-0-9V) PCB Mount Transformer (TF411756) Bargain - Folders
$11.90

Powertech 18V Centre Tapped PCB Mount Transformer

Powertech

• Input: 240V 50Hz• Output: 18V Centre Tapped (9V-0-9V), 350mA max (6.3VA). Pins 6-8-10• Internal 130 degree C thermal fure • TF411756• Pin spaci...

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$11.90 - $11.90
$11.90
$11.90
$11.90 - $11.90
$11.90
1000W 240 - 120V Isolated Stepdown Transformer - Folders
$599.00

Powertech 1000W Isolated Stepdown Transformer

Powertech

Quality fully-enclosed stepdown transformer with fold up metal carry handles, approved 3-wire power cord and US style 3 pin 110 - 120V socket (w...

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$599.00 - $599.00
$599.00
$599.00
$599.00 - $599.00
$599.00
500W 240 - 120V Isolated Stepdown Transformer - Folders
$479.00

Powertech 500W 240 - 120V Isolated Stepdown Transformer

Powertech

Quality fully-enclosed stepdown transformer with fold up metal carry handles, approved 3-wire power cord & US style 3 pin 110 - 120V socket (...

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$479.00 - $479.00
$479.00
$479.00
$479.00 - $479.00
$479.00
3kohm Centre Tap to 3k ohm Coupling Transformer - Folders
3kohm Centre Tap to 3k ohm Coupling Transformer - Folders
$8.20

Powertech 3kohm Centre Tapped Coupling Transformer

Powertech

3kohm coupling transformer. Specifications: Input Impedance 3kΩ Output Impedance 3kΩ Secondary Winding Configur...

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$8.20 - $8.20
$8.20
$8.20
$8.20 - $8.20
$8.20
1K ohm Centre Tapped - 8 ohm Output Transformer - Folders
Powertech Centre Tapped Transformer 1
$8.20

Powertech Centre Tapped Transformer

Powertech

1K 8ohm Output Transformer. Specifications: Input Impedance 1kΩ Output Impedance 8Ω Core Material Ferr...

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$8.20 - $8.20
$8.20
$8.20
$8.20 - $8.20
$8.20

Frequently Asked Questions

What is a power transformer?

A power transformer is an electrical device that transfers energy between two or more circuits using electromagnetic induction. It is primarily used in power transmission and distribution systems to step up (increase) or step down (decrease) voltage levels, enabling efficient electricity flow over long distances.

How does a power transformer work?

A power transformer works on the principle of electromagnetic induction to transfer electrical energy between circuits while either increasing (step-up) or decreasing (step-down) voltage levels. It allows efficient power transmission over long distances by minimising energy loss.

How It Works:
Alternating Current (AC) in the Primary Winding:

When AC voltage is applied to the primary coil (winding), it creates a changing magnetic field around the transformer’s core.

Magnetic Flux in the Core:
The alternating magnetic field generated in the primary winding induces a magnetic flux in the iron core, which serves as a medium for energy transfer.

Induced Voltage in the Secondary Winding:
According to Faraday’s Law of Electromagnetic Induction, the magnetic flux passing through the secondary winding induces an alternating voltage in it.
Voltage Transformation:

The voltage output depends on the turns ratio of the primary and secondary windings:
Step-Up Transformer: If the secondary winding has more turns than the primary, it increases voltage.
Step-Down Transformer: If the secondary winding has fewer turns than the primary, it reduces voltage.

Current Flow in the Secondary Circuit:
Once the secondary winding receives the induced voltage, it supplies AC power to connected loads such as homes, industries, or businesses.

More to consider

150w (450w) 12vdc to 240vac modified sinewave inverter - Folders
150w (450w) 12vdc to 240vac modified sinewave inverter - Folders
$71.90

Powertech 150w (450w) 12vdc to 240vac modified sinewave inverter

Powertech

This convenient mains inverter is perfect when you’re out camping, or anywhere else where a standard mains socket isn’t available. It...

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$71.90 - $71.90
$71.90
$71.90
$71.90 - $71.90
$71.90
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