ENERGY SUPPLY DEVICE FOR EXPLOSION-PROOF ELECTRONIC FUNCTIONAL UNITS

• US 20150116071A1
• Filed: 10/24/2014
• Published: 04/30/2015
• Est. Priority Date: 10/24/2013
• Status: Abandoned Application

• Current Assignee: ABB Schweiz AG (ABB Limited)
• Original Assignee: ABB Technology AG (ABB Limited)
• Inventors: Keul, Thomas, WUNSCH, Bernhard, Kretschmann, Rainer, Schffer, Ralf, Drofenik, Uwe
• Application Number:
  US14/523,524
• Publication Number:
  US 20150116071A1
• Time in Patent Office: Days
• US Class Current: 336/200
• CPC Class Codes: H01F 2027/2809 on stacked layers
• CPC Class Codes: H01F 2027/2814 with only part of the coil or of the winding in the printed circuit board, e.g. the remaining coil or winding sections can be made of wires or sheets
• CPC Class Codes: H01F 27/24 Magnetic cores
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/366 made of ferromagnetic material

Abstract

An exemplary energy supply device for explosion-proof electronic functional units, in which the functional units are supplied from a high-frequency AC voltage that is individually output for each of the functional units via an inductor. In order to supply a multiplicity of functional units with little effort, the multi-level printed circuit board of each inductor can be covered with a flat board of magnetic material. The flat board being parallel to a plane of conductor tracks of the inductors.

Claims

1. An energy supply device for explosion-proof electronic functional units in which the functional units are supplied from a high-frequency AC voltage which is individually output for each of the functional units, the device comprising:

a plurality of inductors, each inductor is connected to provide the AC voltage to a respective functional unit, and is formed of congruent conductor tracks of a multi-level printed circuit board which is arranged vertically on a distribution printed circuit board,

wherein the multilevel printed circuit boards of the plurality of inductors are connected to one another, and

wherein the multi-level printed circuit board of each inductor is covered with a flat board of a magnetic material parallel to a plane of the conductor tracks.

2. The energy supply device as claimed in claim 1, wherein each inductor includes two windings having an opposite winding sense.

3. The energy supply device as claimed in claim 1, wherein each flat board includes ferrite material.

4. The energy supply device as claimed in claim 1, wherein each flat board is arranged between two adjacent inductors.

5. The energy supply device as claimed in claim 1, wherein each flat board is adhesively bonded to a respective inductor.

6. The energy supply device as claimed in claim 1, wherein each inductor covered by the flat board of magnetic material is also surrounded by the flat board of magnetic material.