Self-oscillating electronic ballast with dimming control for lamps and system that includes it.

Summary of the technology

This invention describes a self-oscillating electronic ballast with dimming control for fluorescent lamps such as induction electrodeless lights (IEFL). The proposed ballast is able to carry out dimming control and self-start with no need of auxiliary circuits and with a minimum number of external components.

Fundació URV

Details of the Technology Offer

This invention describes a control circuit for self-oscillating autonomous or embedded electronic ballasts of application in fluorescent lightssuch as induction electrodeless lamps (IEFL). Although there is a considerable amount of previous literature describing self-oscillating ballasts, the present invention provides full functionality and dimming control with no need of startup circuits or additional magnetic elements. The control system can be included in an integrated circuit and the current sense transformer is of minimum size. The chief advantages in the realization of electronic ballasts are that lighter, smaller and cheaper devices could be developed with this approach.

Current development status

Laboratory prototypes


The invention has application as stand-alone or integrated ballast for induction electrodeless fluorescent lamps. Self-oscillating control has been employed previously to reduce the complexity and cost of the ballasts, but dimming control for those circuits remains to be disadvantageous. So far, dimming in self-oscillating ballasts has been achieved with help, for example, of additional magnetic elements which are heavy and bulky. Our invention employs logic circuits in order to ensure self-oscillation and provides a simple, effective, and low-cost dimming control.

Desired business relationship

Patent licensing

Intellectual property status

  • Patent already applied for
  • Patent application number :P201631618

Related Keywords

  • Electronics, IT and Telecomms
  • Electronics, Microelectronics
  • Electronic circuits, components and equipment
  • Industrial manufacturing, Material and Transport Technologies
  • Physical Sciences and Exact Sciences
  • Electronics Related Market
  • Electronics Related Equipment
  • Consumer Products
  • electronic ballast
  • self-oscillating
  • dimming
  • electrodeless fluorescent lamp
  • logic circuit

About Fundació URV

The Technology Transfer and Innovation Center (CTTi) meets from the University environment the technological needs and services generated by the productive sectors and administration, through the management of Transfer of Technology and Knowledge, the Intellectual and Intellectual Property management, Technology Watch, Entrepreneurship, and Technology Infrastructures Offer (business incubator).

Fundació URV

Never miss an update from Fundació URV

Create your free account to connect with Fundació URV and thousands of other innovative organizations and professionals worldwide

Fundació URV

Send a request for information
to Fundació URV

About Technology Offers

Technology Offers on Innoget are directly posted
and managed by its members as well as evaluation of requests for information. Innoget is the trusted open innovation and science network aimed at directly connect industry needs with professionals online.


Need help requesting additional information or have questions regarding this Technology Offer?
Contact Innoget support