An improved Voltage Stabilizer System
Microcontroller technology provides improved performance in heavier loads
Technologies used


Industrial sector (PRODCOM code)
    3162 Other Electrical Equipment

Lamda Inc. is one of the most specialised companies in the East Macedonia and Thrace area. The areas of specialisation include high technology applications through design, implementations and installations of specific application electronic systems. Lamda Inc. was established in 1994, it was selected to be subsidised by the Law 1892/90 for development and was certified by the Ministry of Industry, Research and Development (Pr. No. 14798 / ?F?1784) as a high technology company. It has 6 employees and an annual turnover of 160 KEURO.

Electronic engineering and construction of electronic systems is Lamda's main sector. The skills the company had before the AE include PCB design and computer programming. The company has many products targeted to industry like: Voltage Stabilisers, Position Control Systems, Timers, Computer controlled switches, Stepper Motor Controllers and DC motor drivers. The main market is wide spread in the industrial sector although the manufacturing industry needs more Lamda's end product.

The objective of the application experiment was to improve the electronics in the existing voltage stabiliser system, in such a way to become more efficient and capable of handling heavier loads. This product is used to protect from the overvoltage the sensitive electronic equipment and machinery.

The previous product incorporates conventional electronic technology and out-dated power electronics components. To improve the product, application experiment enhanced its electronic technology, introducing the use of a microcontroller. The advanced electronics enabled the product to be more efficient through modern digital control techniques. Furthermore, the microcontroller has the advantage of direct control of switching power electronics (TRIACS). The integration of the new technologies improved the product making it lighter and capable of handling heavier loads.

The objective of the application experiment was to (i) introduce advance electronics in control (microcontroller) and switching power electronics (TRIACS), (ii) to provide improved performance in heavier loads, to assist in developing new export markets, and (iii) to reduce product set up and servicing costs.

Some of the major the target qualifications are:

  • Correction time < 15msec
  • Distortion < 1%
  • Output Voltage 3X230VAC 2% typical, 400VAC
  • Output voltage/current check
  • Input voltage 180 ~260V (220V 20%)

The application of microcontroller technology has produced the following product improvements:

  • Improved accuracy in the changing areas of the main transformer
  • Improved product reliability, incorporating system self-diagnostic facilities and algorithms to detect if the stabiliser is working of limits and cut's it off.
  • On line display of the input-output information and to differentiate the product from competitor products.
  • Reduced service costs.
  • Improved programming mechanisms to prevent unauthorised reprogramming of the control unit.

These additional product features provide new customer benefits and product differentiation features that improve Lamda's market competitiveness. The ability of the stabiliser to operate by digital control allows the company to develop new markets for the product in the East Europe. The application experiment was completed in 8 months, and cost 43.388 KECU to complete. The payback period for the application experiment will be 6 months, and the return on investment is 921% for three years product life.

The product will have a street price around 650 000 GDR (2 000 EURO) and the target is to double or better triple the market share.

Following the application experiment, Lamda is now capable of undertaking the incremental design of the improved product for other applications, and the manufacture of the new product.

Lamda Inc.
Kougioumtzoglou 8
Xanthi TK 67100

Detailed information

You can also benefit from microelectronics

Microcontroller technology provided Lamda Inc. with the means of improving its products and enhancing its market position. You can also achieve significant benefits by acquiring the right microelectronics technology and utilising it in your product or manufacturing process. You can get help from FUSE to realise this.

FUSE is a technology transfer programme, funded by the European Commission to stimulate the wider use of microelectronics technologies by European enterprises to increase their competitiveness and enhance their economic growth. The demonstrator described here is one of many examples in the public FUSE portfolio covering the whole spectrum of microelectronics technologies and spanning a wide range of applications and industry sectors.

FUSE provides you with:

  • Best practice in acquiring specific microelectronics technologies and conducting full development projects through the FUSE portfolio of real life demonstrator documents.
  • Local training and expert support to plan your innovation realistically and help you conduct your project successfully.

Further information and support relating to this and other demonstrators can be obtained from the addresses below.

Further information   Guiding Technology Transfer Node
For further information and support regarding this case study, please contact a Technology Transfer Node (TTN) in your region.
Homepage: http://www.fuse-network.com
Archimedia SA
73, Poseidonos Avenue
P. Faliro 175 62