Can this work ? - 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 19th May 2010, 03:31 PM   #1
larryB is offline larryB  Canada
diyAudio Member
 
Join Date: Apr 2010
Default Can this work ?

Will those work as shown by the waveforms of not , I am trying to reac the closest to 13.8 volts on the primary of transformer , I was thinking .5 ohm resistor or 1 ohm resistor on that side .

thx you for all comments
Attached Images
File Type: jpg POWERAMP.JPG (67.9 KB, 236 views)
  Reply With Quote
Old 19th May 2010, 08:39 PM   #2
larryB is offline larryB  Canada
diyAudio Member
 
Join Date: Apr 2010
I think I have understood the mosfet wrong .

I believe this is more like it .
Attached Images
File Type: jpg POWERAMP2.JPG (66.0 KB, 212 views)
  Reply With Quote
Old 19th May 2010, 09:09 PM   #3
diyAudio Member
 
Join Date: Nov 2008
Larry: What are you trying to do? You have 1.4V on the input and 1.2V at the Xformer primary. It seems to me that all you need is a buffer for current gain. E
  Reply With Quote
Old 19th May 2010, 09:20 PM   #4
diyAudio Member
 
firechief's Avatar
 
Join Date: Sep 2008
Location: Near Seattle Wa
In the last drawing, the output transformer has 0vDC and 0vAC on the primary. Also it looks like the two first gain stages are supposed to handle one phase of the signal each, but the feedback resistor values are different, Ill bet that is not what you wanted. Uh keep trying.
  Reply With Quote
Old 20th May 2010, 07:59 AM   #5
glennb is offline glennb  Australia
diyAudio Member
 
Join Date: May 2004
Location: Melbourne
Quote:
Originally Posted by firechief View Post
Also it looks like the two first gain stages are supposed to handle one phase of the signal each, but the feedback resistor values are different, Ill bet that is not what you wanted.
The feedback resistors need to be different. The gain of an inverting amp is Rf/Ri, the gain of a non-inverting amp is Rf/Ri + 1.
__________________
Glenn.
  Reply With Quote
Old 20th May 2010, 12:32 PM   #6
diyAudio Member
 
firechief's Avatar
 
Join Date: Sep 2008
Location: Near Seattle Wa
Ah Glenb - I learned something Larryb - what is your thinking here? What is the over all design goal?
  Reply With Quote
Old 20th May 2010, 01:27 PM   #7
larryB is offline larryB  Canada
diyAudio Member
 
Join Date: Apr 2010
This is for an oscillator , not for audio in particular .

Im confused , what is wrong with this design .

The first 2 gains stages with the lm833 should be the same amplitude , but inverted , sorry if it is not .

Can anybody tell me whats wrong with the design , what could be made better , thx . I am trying to replace the transformer from the zeus design , this seems like it replaces a transfo witgh the battery in the middle to me when i just think at the waveform .
  Reply With Quote
Old 20th May 2010, 02:02 PM   #8
larryB is offline larryB  Canada
diyAudio Member
 
Join Date: Apr 2010
Firechief I see yopu are confused by the image .

The 1,4 V is just my bias , I wish this to go up to about 15 volts , to get the maximum output out of the battery and to barely bias the mosfets so they stay in continuous conduction .The vgs of a mosfets like this is about 1.5 volts or lower .
  Reply With Quote
Old 20th May 2010, 02:09 PM   #9
diyAudio Member
 
Nico Ras's Avatar
 
Join Date: Nov 2005
Location: East Coast of South Africa
LarryB, what exactly is your onbjective?
  Reply With Quote
Old 20th May 2010, 03:01 PM   #10
larryB is offline larryB  Canada
diyAudio Member
 
Join Date: Apr 2010
My goal is to have an pure sine oscillator for the 300-25000 hz range , pure sine voltage and current with no commutation glitches 100% linear , good with reactive loads .

To step up and isolate voltage @ about 50 volts with a load of about 35 ohms or higher , of capacitive , inductive or resistive phase angle .

Firechief I believe you are extremely confused , plz explain what you are trying to communicate .

Last edited by larryB; 20th May 2010 at 03:11 PM.
  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
Help! is this work? radio28 Tubes / Valves 9 8th November 2005 03:25 AM
how do I work out this busterno1 Multi-Way 5 8th October 2003 04:13 PM


New To Site? Need Help?

All times are GMT. The time now is 11:09 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