Wound Components

Custom Transformers and Wound Components

The Precision range includes fully-custom high and low frequency transformers for lighting, power supply and instrumentation.
Precision is our in-house range of wound components, built at our affiliated ISO9001:2015-certified plants in China.


Backed by over a quarter of a century of manufacturing expertise, our range of fully custom high and low frequency transformers is designed specifically to fulfil customers’ needs for full flexibility, superb quality and unbeatable value for money. Distributed exclusively via our UK and German hubs, the range is available throughout Europe.

The Precision range of wound components includes inductors, chokes, main and isolation transformers and switch mode transformers. They are ideal for a variety of industries and applications, including lighting, automation, metering and power supply.

Inductors and Chokes

Our wound component product range includes chokes and inductors, which can be used for a variety of applications even those that require a high DC current bias. Some of the applications you may use common inductors and chokes are:

  • Emergency Lighting
  • Street Lighting
  • Power supplies for IT

Discover more benefits and information about our Precision inductors and chokes.

Precision Main and Isolation Transformers

Nobody wants to receive a shock when they come into contact with electrical components, which makes isolation transformers extremely valuable as they protect the circuits, equipment and anyone who comes into contact with the device.

The Precision range of main and isolation transformers not only provide protection, they’re manufactured with permanent corrosion protection, high insulation value and are designed for high ambient temperatures.

Main and Isolation Transformers can be used for applications such as:

  • Emergency Lighting
  • Street Lighting
  • Power Supplies for IT
  • Metering
  • Robotics
  • Automation

Discover more benefits and information about our Precision Main and Isolation Transformers.

Switch Mode Transformers

Switch Mode Transformers (or Switch Mode Power Supplies) are beneficial for applications that require more regulation when it comes to the amount of power a transformer may be receiving. Switch mode transformers can be used alongside AC Power Supplies or DC-DC Converters to transfer or receive power for its desired application.

Types of applications Switch Mode Transformers can be used for include, but are not limited to:

  • Lighting systems
  • Industrial power supplies (Induction, LED and HID)
  • Digital Logic Circuits
  • Telecommunications Circuits
  • Displays
  • Switching supplies and navigation

Discover more benefits and information about our Precision Switch Mode Transformers.

Why Precision?

Our relationship with our Chinese manufacturers has been fine-tuned over the years, enabling us to provide fast sample turn around and a responsive, cost-effective solution for mass production.

We work together with five factories in the Shenzhen district to provide technical and commercial solutions for our customer’s product. We have the ability to negotiate costs with local raw material suppliers in China ensuring best material costs and availability for master production.

We have vast experience working within the lighting market; key areas include LED, HID, emergency lighting, ballasts and driver systems up to 100W. We also have experience in the supply of main transformers, rectifier transformers, switching transformers and SMPS for Automation and Control applications.

With samples in 14 days and production from 3 weeks ex-factory, isn’t it time you switched?

Call the team on +44 (0) 1480 412233, email us on info@componentsbureau.com, or simply complete our contact form.

Inductors and chokes

Some of our global partners

  • Precision
  • Bivocom
  • High Flying
  • Cervoz
  • AEM Inc.
  • Adam Technologies Inc.
  • Kingbright
  • AiSHi
  • Minmax
  • Artesyn
  • Everflow
  • Jamicon
  • CIT Relay
  • Hua Jung Components
  • HSM
  • Iskra
  • Konek
  • Littelfuse
  • Minamoto
  • OBO Pro 2
  • PDC
  • Hua Jie
  • Suntan