Patent ID: 11901109
Assignee: TRANSON CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A primary coil assembly for a transformer, which includes a primary coil interposed between a pair of secondary coils and configured to perform electromagnetic mutual induction, the primary coil assembly comprising:
a bonding coil having both ends connected to primary-side terminal pins of the transformer;
a first PCB member provided on an upper surface of the bonding coil and configured to constitute an upper-side auxiliary winding of the primary coil; and
a second PCB member provided on a lower surface of the bonding coil and configured to constitute a lower-side auxiliary winding of the primary coil;
wherein the first PCB member is formed of a hard printed circuit board (HPCB) or an epoxy HPCB in which a pair of outer terminal pin connection parts extending outward are formed, and
the second PCB member is formed of a flexible printed circuit board (FPCB) in which a pair of outer terminal pin connection parts extending outward are formed and one inner terminal pin connection part extending inward is formed; and
wherein the inner terminal pin connection part is bent around a proximal end to overlap one of the pair of outer terminal pin connection parts, and the overlapping inner terminal pin connection part and outer terminal pin connection part are connected to a terminal pin of the transformer.