Where Should the Next Dollar of Loss-Reduction Budget Go?
The next dollar should go to the active limit…
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Technical Library
Practical engineering articles for transformer-core selection, design and production.
324 articles
Core Cost Reduction: Remove Waste Before Moving the Design Limit
A lower core purchase price is not necessaril…
Read full articleWhy a Firm Core Quotation Starts with the Drawing
Weight and grade can support an estimate. The…
Read full articleHow to Recognize a Core Test Report That Cannot Support a Decision
A precise watt figure can be the least useful…
Read full articleWhy an Excellent First Sample Can Be a Poor Production Predictor
The first sample may have passed through a pr…
Read full articleRepeatability: What the Best Test Result Cannot Tell You
Ask for the sequence, not the record result. …
Read full articleA Passing Core Test Does Not Qualify the Winding Interface
The core passes its magnetic test. The windin…
Read full articleDimensional Acceptance and Magnetic Acceptance Are Different Tests
A complete set of green dimensional checks ca…
Read full articleStack Thickness Is a State-Dependent Dimension
A stack can be too thick for the winding and …
Read full articleWhen Actual Core Weight Does Not Match the Drawing
The scale is reporting a discrepancy. It is n…
Read full articleTransformer Noise: Separate the Source from the Transmission Path
A louder transformer does not tell you which …
Read full articleLocal Defects Require Local Inspection Logic
A defect can occupy too little material to mo…
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Engineering reference notes
Short reference notes complement the full published articles.