Confused with the terms for gainclone. - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 August 2012, 01:47 PM   #1
charas is offline charas  Greece
diyAudio Member
 
Join Date: Feb 2008
Default Confused with the terms for gainclone.

I am trying to build a cheap gainclone amp but i am confused with the terms because i am a newbie.What the followings mean,somebody help please:
Rg,Ri,Rf,Rm,Rz,Rb,Rs and Cs,Vcc,Vee.
  Reply With Quote
Old 13th August 2012, 02:09 PM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Download the National datasheet for the lm3886 (or whatever chipamp you have selected).
Look at the table of components and their uses. Look at the various example schematics.
Refer to a fig no. from that datasheet and ask your questions.
__________________
regards Andrew T.
  Reply With Quote
Old 14th August 2012, 05:49 AM   #3
charas is offline charas  Greece
diyAudio Member
 
Join Date: Feb 2008
Default Confused with the terms for gainclone.

Quote:
Originally Posted by AndrewT View Post
Download the National datasheet for the lm3886 (or whatever chipamp you have selected).
Look at the table of components and their uses. Look at the various example schematics.
Refer to a fig no. from that datasheet and ask your questions.
Thank you for reply.I manage to solve some of the symbols my self and then i look at lm3886 data.
But my question was a general question and not specific for gainclones.For example what the Rg or Rs or Cs... e.t.c, mean in other schematics too.That was my query and not the lm3886.Thank you anyway.
  Reply With Quote
Old 14th August 2012, 06:44 AM   #4
diyAudio Member
 
sofaspud's Avatar
 
Join Date: Nov 2005
Location: San Antonio
It's difficult to specify the nomenclature without the accompanying schematic. The best I can do is make semi-educated guesses (since I'm only semi-educated).
Vcc and Vee are easy... those are collector voltage and emitter voltage respectively. Somewhat analogous to the B+ you find in tube circuits ("B" is for battery IIRC, even if there's no battery. It's just a holdover from an earlier time).
More guessing... Rz is probably Zobel resistance, Rs and Cs refer to the source. Ri refers to input resistance, Rf is feedback resistance.
'Twas good advice to look at a datasheet circuit that includes a table of components and functions.

and Rm and Rs could well be mute and standby... the schematic should make it clear to you which it is.
__________________
It is error only, and not truth, that shrinks from enquiry. - Thomas Paine

Last edited by sofaspud; 14th August 2012 at 06:48 AM.
  Reply With Quote
Old 14th August 2012, 11:37 AM   #5
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Everybody calls them different.
There is no universal standard.

Except for units of measurement. eg.
V = Volts
A = Amperes.

If you have specific schematic then post that. But calling up any combination of letters tells us effectively nothing.
__________________
regards Andrew T.
  Reply With Quote
Old 14th August 2012, 11:43 AM   #6
charas is offline charas  Greece
diyAudio Member
 
Join Date: Feb 2008
Default Confused with the terms for gainclone

Quote:
Originally Posted by sofaspud View Post
It's difficult to specify the nomenclature without the accompanying schematic. The best I can do is make semi-educated guesses (since I'm only semi-educated).
Vcc and Vee are easy... those are collector voltage and emitter voltage respectively. Somewhat analogous to the B+ you find in tube circuits ("B" is for battery IIRC, even if there's no battery. It's just a holdover from an earlier time).
More guessing... Rz is probably Zobel resistance, Rs and Cs refer to the source. Ri refers to input resistance, Rf is feedback resistance.
'Twas good advice to look at a datasheet circuit that includes a table of components and functions.

and Rm and Rs could well be mute and standby... the schematic should make it clear to you which it is.
Thank you.This is the answer i was looking for those symbols.And you are correct.In tube amps schematics things are way simpler.
  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
Resource - Laymans terms nathanjh13 Everything Else 0 27th June 2011 09:55 AM
some doubts about technical terms used with speakers. knairkuttan Subwoofers 5 5th May 2010 07:39 PM
DCX 2496 question laymans terms (aka ignorant mans terms) cmckasty Digital Line Level 1 11th May 2005 03:03 AM
Lobbing What is it in layman's terms? mrteleportal Multi-Way 5 24th November 2004 10:00 AM


New To Site? Need Help?

All times are GMT. The time now is 01:10 AM.


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