Electrolysis! Behold!

[Stickman393]

Just, little bit of fun here.

Ain't just a neat way to etch your stompboxes. It's also a great way to destroy economizer actuators.

Guess which connections were positive.

 

[LukeFRC]

I have no idea what that is - but it doesn’t look happy

 

[Stickman393]

0-10vdc. Big ol CLR on the input. Got wet...like...a lot.

Its an actuator that modulates the position of a damper that closes the return air and opens the outside air pathway for a rooftop air conditioner.

Of specific note: all that copper oxide and no sign of overheating. No burn marks. No melting of the plastic. Just...corrosion.

 

[Stickman393]

Kinda got me thinking...

Talk box enclosure?

Would need a compression driver in the =/<3.75" range...

 

[jessenator]

Chonk Box