Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 13th September 2002, 02:53 PM   #1
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Default Adding large caps?

Anyone ever make a "cap bank" to add to the AC line before your gear? What I meen is add this "bank" in-line of the AC...wall outlet--"bank"-- audio gear.

Just wondering if this could/would help anything...and how much is enough?


Rino Odorico
  Reply With Quote
Old 13th September 2002, 03:08 PM   #2
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Check this thread: Anybody tried that?
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 13th September 2002, 03:13 PM   #3
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
You don't want to bypass your AC line to neutral with large capacitors. It sounds to me like you are thinking of applying the bypassing used in a DC supply to the AC mains--totally different things.

Sometimes one bypasses line-neutral, line-ground, neutral-ground but only with capacitors chosen for higher frequencies. That is, we might want to remove noise at 100kHz-5MHz and leave the fundemental (50/60/400Hz) relatively untouched.

Another thing that is possible is AC coupling the mains line. This is usually done for a specific purpose, e.g. eliminate DC on mains from causing transformer problems. It needs to be done very carefully.
  Reply With Quote
Old 13th September 2002, 03:24 PM   #4
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Peter, thanks for the reply!

Sounds like a good idea, cheap to try at least. But what I was thinking is adding this "cap bank" in line or series, just like in car audio.

Rino Odorico
  Reply With Quote
Old 13th September 2002, 03:34 PM   #5
sam9 is offline sam9  United States
diyAudio Member
 
sam9's Avatar
 
Join Date: Jun 2002
Location: Left Coast
Default Ole Sparky

I looked at some of the photos on the thread that was cited. Scary stuff. I think I'd rather play patty-cake with "Ole Spaky".

(For those of you not in the US, "Ole Spaky" is the nickname for Mississipi's electric chair.)

  Reply With Quote
Old 13th September 2002, 04:11 PM   #6
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
Car audio is a DC supply, unlike mains AC. Please make sure you completely understand what you are doing!

A good idea might be to test any device using an isolation transformer unless you are absolutely certain it is safe.
  Reply With Quote
Old 13th September 2002, 10:16 PM   #7
haldor is offline haldor  United States
diyAudio Member
 
Join Date: Aug 2001
Location: Columbus, Ohio
Default Re: Adding large caps?

Quote:
Originally posted by Rino odorico
Anyone ever make a "cap bank" to add to the AC line before your gear? What I meen is add this "bank" in-line of the AC...wall outlet--"bank"-- audio gear.

Just wondering if this could/would help anything...and how much is enough?


Rino Odorico
Be aware that any cap that is wired across the AC mains has to be non-polarized and should also be rated for such use. If you put a computer grade electrolytic on your AC power it will self destruct quite violently.

There is little reason to do this anyway. An effective RFI filter on the input to your power supply is what you need. Unless you are building a monster class A amp, your not going to be loading down the AC lines anyways.

Remember power = Volts time Amps. At 12V you've got to push a lot of amps to get power. At 120V you only have to push 1/10 the amps, so voltage drops in the cable are greatly reduced.

Phil
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Large caps Stuart Easson Swap Meet 26 25th March 2009 03:57 AM
anyone know How to refurbish Large caps? gto127 Parts 11 29th January 2009 01:09 AM
Paralleling small value caps with large value PS caps xyrium Power Supplies 16 14th October 2005 04:06 PM
Question about adding caps to an amp mattjk Solid State 3 11th December 2004 05:32 AM
Large PSU caps for sale. jleaman Swap Meet 3 23rd October 2004 04:28 AM


New To Site? Need Help?

All times are GMT. The time now is 01:40 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2