Electronics and Telecom
 
Coreless Printed-Circuit-Board (PCB) Transformers
無鐵芯印刷電路板型變壓器
 
Principal Investigator 項目負責人
Professor HUI, Ron Shu Yuen 許樹源教授 [ Profile ]
, Contact: Knowledge Transfer Office
Country
國家		Patent/Filing No.
專利/申請號		Description
發明名稱		Issued/Filing Date
授權公告/
專利申請日期		Status
狀態
US US7,768,371 Coreless Printed-Circuit-Board (PCB) Transformers and Operating Techniques Therefor 03/08/2010 Granted
China ZL99100579.1 無鐵芯印刷電路板型變壓器 01/02/2006 Granted
UK EP(GB)0935263B Coreless Printed-Circuit-Board (PCB) Transformers And Operating Techniques Therefor 26/05/2004 Granted
Germany DE69917504.6-08 Operating techniques for coreless printed-circuit-board (PCB) transformers 26/05/2004 Granted
Europe EP0935263B Method of operating a coreless printed-circuit-board (PCB) transformer 26/05/2004 Granted
US 12/847,638 Coreless Printed-Circuit-Board (PCB) Transformers And Operating Techniques Therefor 30/07/2010 Pending
Stage of Technology Transfer:  Commercial viable technology/product ready for sale
Research Area:   Electronics and Telecom - Power Electronics
Abstract
Transformers are used for energy and signal transfer and for providing electrical isolation. CityU researchers have developed a coreless PCB-based transformer that does not require a transformer core, thereby reducing production cost and simplifying the automated manufacturing of transformers. The invention also controls the operating frequency of the coreless transformer, providing optimal operating techniques for coreless PCB transformers under conditions of minimum input power and maximum energy efficiency. The resonant frequency of the transformer can be adjusted.

Uniqueness and Competitive Advantage
• Wide frequency range: from 1 Hz to 300 kHz
• Flexible choice of optimal operating frequency
• Compact in size and low production cost

   

Applications
• Suitable for applications in which stringent height requirements are to be met


Contact Information
Mr Tomson Lee, Senior Technology Transfer Officer
Address: Technology Transfer Office, City University of Hong Kong
Room 401, Festival Walk Tower, 80 Tat Chee Avenue
Kowloon Tong, Hong Kong
Tel: (852) 3442 6441/3442 6859
Fax: (852) 2265 8028
Email: thmlee@cityu.edu.hk
   
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