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Questions about the components in a circuit (metal piece)

lovingdemscience

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Hi can anyone explain what is the metal stick sticking out of the screw and what is it for? I found it in a air purifier device.

IMG_20200526_140417.jpg
 
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betwixt

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Most likely a negative ion source.

Some 'purifiers' generate small levels of ozone, claiming it makes the air purer although more likely it produces a slight scent to make people think it does more than it really does.

If that's what it is, it will have a high negative voltage on it, enough that you might see a tiny glow around it in the dark but at a current rating so low it isn't harmful to touch.

Brian.
 

Relayer

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Hello lovingdemscience,
It almost looks like a grounding source.
When the unit is fully assembled, does that wire touch any metal?
Regards,
Relayer
 

lovingdemscience

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Hi there,
No it doesn't touch anything. I think betwixt is right on this one, my purifier do have a kind of smell as described by him.
 

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