Tortech

Audio Transformers:

Click here for more info on Balanced Studio Power Supply

 The Balanced Studio Power Supply converts conventional unbalanced single-phase mains power to symmetrical balanced power. As a power supply for a studio�s audio equipment, this eliminates most of the spurious components in a studio�s mains supply, providing a clear, solid earth. By eliminating reactive current in the earth, this lowers the studio noise floor, extends frequency response and improves stereo imaging.

• Provides True Balanced 240V Power

• Removes Power Line Noise

• Eliminates Ground Loops in House Wiring

• Reduces Radiated Fields from Power Cords

• Soft Start Protects Equipment From Turn-On Surges

• Less Than 2 Hours Assembly Time

• Reduces Interference Between Equipment

• Temperature/Overload  Protection

General Audio Transformers:

This section describes the range of audio transformers manufactured by Tortech for sensitive applications, and outlines the design and support services which are a key element in the company's approach to this dynamic sector of industry.The company has for many years designed and manufactured products specifically for applications in which the effects of radiated magnetic interference, mechanical noise, and size constraints have been important considerations. Tortech is the market leader in this field.

Working in close partnership with equipment designers, we use our technological expertise to create transformers which are as much a part of original equipment design as any other element of the final product. By operating in this way, we provide the optimum response to highly specific requirements across a wide application profile, including professional broadcast equipment, domestic hi-fi, computers, video monitors and compact power supplies. In many cases the company's involvement in a project is such that it will take key components for newly designed equipment - such as the PSU or the complete chassis - from the manufacturer and carry out bench tests to determine accurately power requirements, size, noise and stray field levels.

In this way Tortech is able to provide the design engineer with a prototype transformer which has already been tested, and which provides the highest level of performance within a specific cost per unit framework.This design/consultancy service is free to the original equipment manufacturer.

AUDIO LINE MATCHING TRANSFORMERS

Line matching transformers or balancing transformers have been designed for the professional audio market. Balancing transformers are used for interfacing the inputs and outputs of professional audio equipment. Frequency response, distortion, line matching and insulation are excellent.

SPECIALIST TRANSFORMERS

There are some key properties of toroidal technology which are critical to success in sensitive applications.

The core and noise.

The quality of the toroidal core is a vital consideration for sensitive applications. Tortech has invested heavily to provide extensive core manufacturing and annealing facilities. We use the highest grades of steel available - MO H or Ml H - with guaranteed maximum losses of 1.11 watts/kg at 1.7 Tesla. Toroidal cores using these high grade materials can operate at 1.7 to 1.8 Tesla, while lower grades are limited to 1.3 to 1.6 Tesla. With this higher efficiency, our designers can use fewer turns of copper and smaller cores to achieve the same result. This means that we can produce a product which is smaller in size with lower temperature rise, more efficient and with lower winding resistances. The core is manufactured in-house under the close supervision of the Quality Department in order to maintain the performance characteristics of the high grade steel.

Because Tortech cores are manufactured from a continuous strip of high grade steel, with both ends welded, there are no loose sheets to vibrate - thus eliminating the possibility' of disturbing mechanical hum. For more sensitive applications, sophisticated methods of core impregnation and winding impregnation have been developed in conjunction with new innovations in varnish impregnation materials.

Size Constraints.

Tortech is able to utilise an infinitely variable diameter-to-height ratio, giving the design engineer the opportunity' to achieve the ultimate level of electrical performance within a specific size.

Radiated magnetic field

Achieving low levels of stray field is an important consideration for the design engineer, as this phenomenon can create unwanted noise through interference with sensitive electronics. While a toroidal transformer will generally offer a reduction of 8:1 in magnetic interference levels compared with laminated or conventional transformers, the engineer still has to be aware of the need to locate the transformer away from the sensitive parts of a circuit. Sometimes the only solution is to separate the device entirely by mounting in a remote enclosure, but this can be costly and undesirable.

Tortech's design team has vast experience in solving this type of problem, and has developed a range of successful techniques over many years.

These include:

� Using a combination of lower flux density and specialist winding techniques .to provide further field reduction by four to five times.

� Applying a low cost steel screening system which is built into the transformer to further reduce stray field by eight to ten times:

� The cost effective use of Mu-metal. Electromagnetic radiation can be almost completely eliminated by totally enclosing the transformer in a Mu-metal. With some manufacturers this can be a costly solution to the problem and therefore prohibitive. The Tortech/ Talema group has built up a varied range of tooling which enables Mu-metal cans to be fabricated or deep drawn - the latter significantly reduces costs, making this form of screening from Tortech a cost effective alternative.