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US 6,664,881 B1Granted
Efficient, low leakage inductance, multi-tap, RF transformer and method of making same
AssigneeAmeritherm, Inc.
InventorsLeslie L. Thompson, Francisco Chiarilli
Life of this patent
Estimating the term…
Abstract
A low leakage inductance, versatile RF transformer with multiple input/output voltage ratios. The transformer has many applications. For example, and not by way of limitation, the transformer can be used with switching power supplies, RF induction power supplies, and RF plasma power supplies. The efficiency of the transformer is on the order of 99% to 99.7%. These efficiencies have been measured at power levels of 3 kilowatts (KW) to 10 KW.
Claims20
A transformer, comprising:
- a plurality of conductors stacked on top of each other, thereby forming a conductor stack, the conductor stack being wound, at least once, around an axis, thereby forming a coil, wherein each of said plurality conductors has a first end and a second end;
- and
- a printed circuit board (PCB) comprising a plurality of traces, wherein
- said first end and said second end of each of said plurality of conductors is connected to said PCB and electrically coupled to at least one of said traces.
1 more element
A transformer, comprising:
- a printed circuit board (PCB) comprising a first trace and a second trace;
- a primary winding;
- and
- a secondary winding, wherein
- said primary winding comprises said first trace, a first electrically conducting element, and a second electrically conducting element, wherein said first trace electrically connects one end of said first electrically conducting element to one end of said second electrically conducting element,
- said primary winding comprises said second trace, a third electrically conducting element, and a fourth electrically conducting element, wherein said second trace electrically connects one end of said third electrically conducting element to one end of said fourth electrically conducting element,
- said electrically conducting elements are stacked on top of each other, thereby forming a stack of electrically conducting elements, such that said third electrically conducting element is disposed between said first and said second electrically conducting elements and said second electrically conducting element is disposed between said third and said fourth electrically conducting elements, and
- said stack of electrically conducting elements is wound, at least once, around an axis.
5 more elements
Dependencies are inferred from the claim text.