Transformer and driving device adopting same

Abstract

The embodiment of the invention relates to a transformer, a product and a driving device of the product, wherein the product comprises the transformer and has (safety extra-low voltage) SELV requirements. The transformer comprises a magnetic core, a framework, at least one winding and an insulation isolation unit, wherein the winding is wound on the framework, the insulation isolation unit is coupled with the framework and is configured into the state that the winding and other conducting components outside the transformer at least meet the preset electric isolation standard. The compactness of the whole circuit comprising the transformer is realized, the equipment size is reduced, and in addition, the production cost is reduced. The embodiment of the invention also relates to a method for manufacturing the transformer.

Description

technical field [0001] The present invention generally relates to the field of electrical technology, in particular to a transformer, a driving device including this transformer and products with SELV (safety extra low voltage) requirements, especially a ballast including this transformer and such Ballast driven low voltage halogen lamps or LEDs (Light Emitting Diodes). Background technique [0002] In products with SELV requirements, transformers are widely used. However, in the prior art, various electrical isolation standards need to be met between the winding of the transformer and other electrical components on the PCB (printed circuit board) except the transformer, such as the need to have sufficient creepage distance (creepage distance) And clearance (clearance) (for example, according to IEC61347-2-2 and SELV, creepage distance and clearance should be at least 6mm). [0003] Creepage distance is the shortest path measured along an insulating surface between two con...

AI Technical Summary

Problems solved by technology

[0006] Even with these methods in the prior art, due to the need to meet the creepage distance and electrical clearance in compliance with safety regulations, in a product or device with a transformer, other conductive parts cannot be placed directly close to the transformer, thus hindering the entire product or The compactness of the device while increasing the manufacturing cost

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