Stupid polarized capacitor tricks

[John Fields]

What 'bit area' ?

---
For the same voltage rating, (thickness of dielectric) the
capacitance of a capacitor will vary with the area of the plates, so
it follows that if a 1µF cap is being used as 1 bit memory its bit
area will be 1/10th that of a 10µF cap being used as a 1 bit memory.
So, if it takes (say) 1 amp for 1 second to dissolve the oxide in
the 1µF cap it'll take 1A for 10s or 10A for 1s to dissolve the
oxide in the 10µF cap

 

[John Fields]

Yup. See my post of 9/26, a couple of inches down in this thread.

---
OK, but there seems to be a problem...

from:


http://www.sas.org/E-Bulletin/2001-11-16/chem/column.html


"Alternating current produces oxidation on the positive half cycle,
but reduction back to aluminum on the negative half cycle cannot
occur in the aqueous medium."

 

[John Larkin]

---
OK, but there seems to be a problem...

from:


http://www.sas.org/E-Bulletin/2001-11-16/chem/column.html


"Alternating current produces oxidation on the positive half cycle,
but reduction back to aluminum on the negative half cycle cannot
occur in the aqueous medium."

Fine, so why do electrolytic rectifiers work? That particular quote
doesn't make much sense. And I know for sure that reverse-biasing an
electrolytic capacitor destroys the dielectric layer.

John

 

[John Fields]

Fine, so why do electrolytic rectifiers work? That particular quote
doesn't make much sense. And I know for sure that reverse-biasing an
electrolytic capacitor destroys the dielectric layer.

 

[John Larkin]

Sounds like amateur speculation to me.


John

 

[Rich Grise]

Sounds like amateur speculation to me.

I wonder when it was written - "Procuring sheet lead may pose a problem..."
http://www.mcmaster.com/nav/enter.asp?pagenum=3497

And can you even get Mason jars any more?

Thanks,
Rich

 

[John Larkin]

I wonder when it was written - "Procuring sheet lead may pose a problem..."
http://www.mcmaster.com/nav/enter.asp?pagenum=3497

Maybe in ancient Greece. Is was easy for the Romans.

And can you even get Mason jars any more?

Yup, plenty around. We used them to store honey, back when we had
bees.

John

 

[Jamie]

I wonder when it was written - "Procuring sheet lead may pose a problem..."
http://www.mcmaster.com/nav/enter.asp?pagenum=3497

And can you even get Mason jars any more?

Thanks,
Rich

Sure, Our local WalMarts has them.
And dome where around, I saw the original style being
constructed with the locking handle

 

[Jamie]

No, you idiot. They were made, and used 100 years ago.

Ha,.
Thanks for the complement.. Nices thing i've heard today!

 

[John Fields]

Sounds like amateur speculation to me.

 

[Terry Given]

Would you post the full name of the book and its author?

sorry about the delay; just returned from a flying visit to Santa Clara.
So busy I dint get a chance to look at *anything* - sigh.

http://www.amazon.ca/Rectifiers-Cycloconverters-Controllers-Thomas-Barton/dp/toc/0198561636

its a great book. I've read it, but dont have a copy in my library



Cheers
Terry

 

[John Larkin]

sorry about the delay; just returned from a flying visit to Santa Clara.
So busy I dint get a chance to look at *anything* - sigh.

There isn't anything in Santa Clara.

John

 

[JosephKK]

John Larkin [email protected] posted to
sci.electronics.design:

There isn't anything in Santa Clara.

John

Are you referring to the City or the County?

 

[John Larkin]

John Larkin [email protected] posted to
sci.electronics.design:


Are you referring to the City or the County?

City. The county has some nice parks.

John

 

[Michael A. Terrell]

Are you referring to the City or the County?

Yes.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida