Electrolytic polarity - Page 4 - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 17th September 2004, 05:56 PM   #31
Prune is offline Prune  Canada
Account Disabled
 
Join Date: Mar 2003
Location: Vancouver
And what about this one:
http://www.diyaudio.com/forums/attac...&postid=328821
I don't understand why the capacitors are in parallel here...

And this one:
http://www.psaudio.com/products/images/306_1.jpg
How can it work with such tiny caps?
  Reply With Quote
Old 17th September 2004, 06:55 PM   #32
diyAudio Member
 
Sch3mat1c's Avatar
 
Join Date: Jan 2003
Location: Milwaukee, WI
Send a message via ICQ to Sch3mat1c Send a message via AIM to Sch3mat1c
Quote:
Originally posted by Prune
And what about this one:
http://www.diyaudio.com/forums/attac...&postid=328821
I don't understand why the capacitors are in parallel here...
I doubt the designer does, either. Note that any cap I'm aware of can withstand 3V or less in either direction... it easily reforms under such conditions. There's so little voltage, faliure isn't going to happen either (don't quote me on that, everything dies (to quote Type O Negative) eventually).

The formula to find capacitance has nothing to do with decibels, just ohm's law, capacitive reactance, load current and the maximum tolerated voltage drop.

Quote:

And this one:
http://www.psaudio.com/products/images/306_1.jpg
How can it work with such tiny caps?
Probably in parallel, to shunt rectifier hash.

Tim
__________________
Seven Transistor Labs
Projects and Resources
  Reply With Quote
Old 17th September 2004, 07:07 PM   #33
Prune is offline Prune  Canada
Account Disabled
 
Join Date: Mar 2003
Location: Vancouver
Diodes do not block DC by themselves, you need large caps. In a thread where the photo (commercial product) was mentioned, the maker said the capacitors couple the AC waveform near the zero-crossing where the diodes do not conduct. Again, I don't see how small caps can do that. Maybe I'll build a transformer model in the simulation instead of using a resistive load and see if it changes anything. As for the first circuit, it's also from a commercial product, an amplifier that's supposed to be very reliable. But I'm wondering if someone messed up the schematic.
  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
Ess AMT polarity? Help promitheus Planars & Exotics 1 13th July 2007 09:52 PM
Hi-Vi B3N polarity Gollum Multi-Way 5 5th July 2007 05:58 PM
GE 97F cap polarity ??? maynardg Tubes / Valves 0 3rd February 2007 09:20 PM
LED polarity guitargully Solid State 4 12th January 2004 04:14 AM


New To Site? Need Help?

All times are GMT. The time now is 02:09 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