Zhihu Q&A
[Answer] What’s the Difference Between These Two Power Transformers?
March 22, 20261 min read
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[Answer] What’s the Difference Between These Two Power Transformers?
[Answer] What’s the Difference Between These Two Power Transformers?
There are two visible differences. First, the one on the left has a 20V output, while the one on the right has an 18V output. Second, the one on the left has fuse protection on the input side, while the one on the right does not.
If the requirements are not strict, 20V AC and 18V AC can be used interchangeably. However, if the electrical device has strict power requirements, then they should not be interchanged.
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