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Associate
February 12, 2025
Question

Earth short protection TDA7498E

  • February 12, 2025
  • 1 reply
  • 1347 views

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

Thanks!

1 reply

Peter BENSCH
Technical Moderator
February 12, 2025

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

just280Author
Associate
February 12, 2025

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

Peter BENSCH
Technical Moderator
February 12, 2025

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.