Patent Number: 6,294,975

Title: Transformer bobbin with hipot-protect structure

Abstract: Disclosed is a transformer bobbin with hipot-protect structure. The bobbin is integrally formed from plastic material through injection molding and includes a central shaft portion and an outer frame portion at two ends of the central shaft portion. When the bobbin is formed during molding, the outer frame portion is extended from one or two lateral outer ends thereof for a length and therefore forms one or two extended portions on the bobbin. Upright rib or ribs may be additionally provided on top surface of the extended portion. The extended portion provide increased creepage distance between pins connected to outer end surfaces of the bobbin and the core of the transformer to effectively prevent hipot from transiting from pins at one end to pins at the other end by crossing over the core directly.

Inventors: Chen; James Chien-Chung (Taipei, TW)

Assignee: Atech Technology Co., Ltd.

International Classification: H01F 27/32 (20060101); H01F 27/29 (20060101); H01F 5/04 (20060101); H01F 5/02 (20060101); H01F 5/00 (20060101); H01F 027/30 ()

Expiration Date: 09/25/2018