Low-profile planar transformer for use in off-line switching pow

Details Low-profile planar transformer for use in off-line switching pow Low-profile planar transformer for use in off-line switching pow

1990-03-30

1991-04-23

Kozma, Thomas J.

Inductor devices

With supporting and/or spacing means between coil and core

Preformed insulation between coil and core

336183, 336200, 336232, H01F 2730

Patent

active

050103148

ABSTRACT:
A low-profile planar type transformer having a unique bobbin design and a minimum of other pieces. The transformer is assembled by simply stacking all of the pieces, other than core pieces, in a sandwich-like-laminate and placing two appropriately shaped ferrite core pieces around the stack. In the preferred embodiment, the stack consists of the following layers, in the listed order: (a) a first thin dielectric spacer; (b) a first planar member (e.g., a PC board) containing a first winding; (c) two thin dielectric insulators; (d) a first nylon bobbin member; (e) a second planar member containing a second winding; (f) a third thin dielectric insulator; (g) a third planar member containing a third bobbin member; (h) a second nylon bobbin member; (i) two thin dielectric insulator; (j) a fourth planar member containing a fourth widning, and (k) a seventh thin dielectric insualtor. Two E-shaped ferrite cores are placed around the stack, with the center arm of the "E" going through a hole in the middle of the stack, to magnetically couple the current in the second planar member's windings to the windings of the first and third planar member.

REFERENCES:
patent: 3609859 (1971-10-01), Hant et al.
patent: 4837544 (1989-06-01), McDougal

Affiliated with

Also associated with

Rating

Low-profile planar transformer for use in off-line switching pow does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low-profile planar transformer for use in off-line switching pow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-profile planar transformer for use in off-line switching pow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1623551