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Modular High Frequency Power Transformer Having Improved Thermal Characteristics

IP.com Disclosure Number: IPCOM000082477D
Original Publication Date: 1974-Dec-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 68K

Publishing Venue

IBM

Related People

Werner, A: AUTHOR

Abstract

This transformer is constructed from 1:1 wound sleeve-core elements joined in a configuration which gives a desired turns ratio with minimum leakage inductance. The shape of the elements gives improved thermal characteristics.

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Modular High Frequency Power Transformer Having Improved Thermal Characteristics

This transformer is constructed from 1:1 wound sleeve-core elements joined in a configuration which gives a desired turns ratio with minimum leakage inductance. The shape of the elements gives improved thermal characteristics.

In Fig. 1, a pair of ferrite sleeves 10, 12 are slipped over an assembly consisting of a plurality of conductors 14, 16, 18, 20 and metallic shield 22. Shield 22 which ultimately will be grounded, separates primary windings 16 and 18 from secondary windings 14 and 20 for voltage insulation safety reasons. Stub 24 on shield 22 holds it in place when he subassembly 26 is folded, as shown in Fig. 2. For purposes of the ensuing description, one end of each of the conductors 14, 16, 18, 220is labeled 14', 16', 18' and 20'. A number of the subassemblies 26 can be joined in a configuration whereby the free ends are adjacent to each other to permit interconnections, providing a desired primary- secondary winding relationship.

One such configuration is a star, as in Fig. 3, wherein the windings are joined in accordance with the wiring diagram of Fig. 4. Windings 16, 18 of each subassembly 26 are interconnected at their 16', 18 ends, and their other ends are connected to windings 18', and 16 of the adjacent subassemblies, as shown in Fig. 4.

Similarly, the secondary windings 14 and 20 are connected, as shown in Fig. 4, to yield a center tapped winding having a 1:10 volta...