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In Reply to: RE: Mundorf ECap Direction posted by Duster on February 20, 2021 at 08:08:28
what's strange is the lack of marking for + - if it's really an electrolytic. Or do they expect people to 'know' the usual physical orientation? Maybe they just came across a crapload of cheap aluminum cases to make their caps.
When you place electro's in a dc circuit with the wrong polarity they will explode eventually.
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That would be my guess too. Buying standard axial housings would be cheaper than having some custom made without the indentation, I would imagine.
Below is a link to the data sheet. I don't know if they're stenciled "Bi-Polar" on the back, but if not, they ought to do their customers a favor and add it to avoid confusion. Writing "Plain" on a cap tells me nothing, in itself.
Since the design is symmetrical without any directionality whatsoever, I'm going to place the caps with the signal flow in the direction of the lettering. It's what I do with any other device without explicit instructions about directionality, so it seems to be the thing to do.
The cap per the description is BIPOLAR meaning there is no differential for positive or negative. The cap doesn't care, so to speak. Electrolytics are not typically made this way. Unlike film caps that are largely wound types, electrolytic caps are stacked or layered electrolyte and dielectric. The groove at the end is a roll seal on the case.
It sucks to get old. It really sucks to get old and bitter.
Edits: 02/21/21
I've known about this since I was a wee lad Mike, I hope you keep things like this in mind in the future and examine more carefully.
Here's one example of a true Sprague Electrolytic - notice the casing and markings. There's none to note from the previous pic
whatever
It sucks to get old. It really sucks to get old and bitter.
yep
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