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Earth short protection TDA7498E

just280
Visitor

‎2025-02-12 01:33 AM

Hi, any suggestions to protect the speaker outputs of the TDA7498 from a short to mains supply earth?

Thanks!

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Peter BENSCH
ST Employee

‎2025-02-12 02:56 AM

Welcome @just280, to the community!

If the supply voltage of the TDA7498 is galvanically isolated from mains, there should be no problem if one of the speaker output wires is connected to mains supply earth.

Does it answer your question?

Regards
/Peter

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just280
Visitor
In response to Peter BENSCH

‎2025-02-12 03:17 AM

Not sure that's a practical solution on a 170VA linear supply?  

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Peter BENSCH
ST Employee
In response to just280

‎2025-02-12 03:45 AM

Well, such a linear supply must also be galvanically isolated for safety reasons, or do you not have such isolation? Therefore the previous statement still applies.

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