Unit question

[Holger Barske]

A pcb with a 4 oz. copper layer - how much ist this in micrometers?
Sorry, we europeans sometimes have some trouble with those american units...

 

[kelticwizard]

I don't do pcb's, but I believe that there are 28 grams per ounce weight-wise.

There are 33 ounces per liter, volume-wise.

I'll leave it to you to decide which one the poster was referring to.

This converter might help in the future. When using it, remember to write "floz" when you mean fluid ounces instead of weight ounces.
http://www.convertit.com/Go/ConvertIt/Measurement/Converter.ASP

 

[Ron E]

4oz copper is 150 micron, or so I am led to believe by a website.

It probably means 4oz per square yard square foot or something like that

0.0150cm*91.44cm*91.44cm=125.4cc
Cu=8 grams/cc
125*8~1000grams per square yard

111 grams per square foot or about 4 ounces per square foot...

Aren't english units simple

 

[pinkmouse]

111 grams per square foot or about 4 ounces per square foot...

Surely you mean 111g per 0.0924m2

 

[Holger Barske]

150µ sounds good, it is a board with serious current transportation.
Thx a lot guys.

 

[subwo1]

Help

It keeps telling me to do a search before I can post a new thread even after I did a search.

 

[pinkmouse]

Re: Help

It keeps telling me to do a search before I can post a new thread even after I did a search.

But did you tick the box at the top left hand corner of the new thread page?

 

[subwo1]

Thanks

Sorry, I didn't mean to get off topic below. 4 oz sounds pretty decent current-wise as I have often seen 1 oz advertised. It would be good to make your echant has some potency left.

I appreciate your response, Pinkmouse. With Jason's aid, I finally saw and did exactly what you mentioned.

I guess the title of my posted thread could have been more interesting to attract more attention. I am anxious to get some feedback on the amp design I thought up.

http://www.diyaudio.com/forums/showthread.php?s=&threadid=18035