Practical answers for power-system decisions.
Specification guides, engineering comparisons, standards notes and application insights written for the people who build the equipment.
Toroidal vs EI Transformers
A practical comparison of size, magnetic field, mechanical noise, thermal behavior and cost drivers.
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Selecting an Isolation Transformer
How to define the isolation boundary, load, leakage, voltage and documentation before selecting a design.
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Replacing an Obsolete Transformer
A practical checklist for replacing a failed transformer when drawings or the original supplier are unavailable.
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EN 61558 Transformer Documents
What equipment teams should clarify about standards, declarations, test records and responsibility.
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Switch-Mode vs Linear Power Supplies
Choosing between regulated switching supplies, linear supplies and transformer-based architectures.
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Transformers and Supplies for Lighting
Electrical, thermal and environmental questions for lighting systems using transformers or DC supplies.
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Selecting a Laminated-Core Transformer
Electrical and mechanical questions for chassis, panel and equipment power transformers.
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Why contactors, solenoids and capacitive loads can require more than steady-state VA.
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Transformer vs Autotransformer
How to choose between voltage adaptation and galvanic isolation.
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