Where better to use charge suckout capacitors? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 28th November 2006, 04:28 PM   #1
diyAudio Member
 
Join Date: Jan 2004
Location: Lithuania Kaunas
Default Where better to use charge suckout capacitors?

Hi,

I'm planning to do some upgrade for my AB Class amplifier. How I should use charge suck out capacitors after or before base stoppers? I attached the images of possible variants. My output stage looks the same Rb1=Rb2=10 ohm R=100 ohm. But output uses three paralled output trasistor pairs.
Where I shoud use charge suckout capacitor? And which value should I chose? It is better to use one bigger value capacitor or three smaller ones?

My output devices are toshiba's 2SC5200/2SA1943
Attached Images
File Type: jpg final_p1.jpg (41.4 KB, 205 views)
  Reply With Quote
Old 28th November 2006, 06:02 PM   #2
diyAudio Member
 
turnA_zpoint's Avatar
 
Join Date: Nov 2006
Hi Mindaugas
I may say only some of your idea .

I think the better circuit of the Ccs is under fig .
The cap warks ‚’eduction of impedance.
The one of upper fig , it decrease frequency characteristic of Amp.@

A@Reference@circuit of the cap that to use same purpose is follow
C11 of P.3 of
http://easy-audio-kit2.hp.infoseek.c...ual/Amp_v2.pdf

The parent directory is
http://easy-audio-kit.hp.infoseek.co.jp/

This is a page of the kit which an amateur distributes,electoric Vol,power amp,DAC,etc
sorry it is only in Japanese
  Reply With Quote
Old 28th November 2006, 06:12 PM   #3
diyAudio Member
 
turnA_zpoint's Avatar
 
Join Date: Nov 2006
Sorry I mistake thinking the driver circuit .
It's emitter follower ,so It may be ok not to add the Ccs, I think.
  Reply With Quote
Old 28th November 2006, 07:08 PM   #4
diyAudio Member
 
Join Date: Jul 2005
Location: Podkarpacie, Poland
Only second fig is valid. In first fig using Rb1 and Rb2 doesn't make much sense. These are usually small (about 5Ohm), and are here for lovering quality of parasitic resonance circuits formed by wiring iductance and internal transistor capacitance. On first figyou are yust closing that parasitic circuit, and then make high risk of oscilations. (sory for my very bad english)
__________________
Wojtek
  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
how do i charge a capacitor? Infinity_Addict Car Audio 18 30th August 2010 09:26 AM
Crossover suckout question. marchel Multi-Way 35 16th January 2008 12:28 PM
trickle charge psu? nafunga Tubes / Valves 6 19th December 2005 03:00 AM
How to charge NiCd at 28.8V Sunsun22 Power Supplies 19 31st July 2005 06:59 AM


New To Site? Need Help?

All times are GMT. The time now is 07:51 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