10 Watt Single End, JFET input - Lateral N-MOSFET output - Page 9 - 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 30th July 2009, 06:25 AM   #81
diyAudio Member
 
Join Date: Sep 2005
Hello revintage

The schematic you made sim. on it is biased in Class A or A/B .
Interesting , not many amplifiers in the forum or even the market uses real lateral mosfet in SE mode like 2SK1058 .
Do you think these amp would work properly .
I still didn't finished yet the original Widowmaker amplifier but soon I'll and I test it .
I was sick unfortunately .
Greets
  Reply With Quote
Old 30th July 2009, 10:26 AM   #82
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi Gab,
have another look at the schematic.
The lower FET is set up as a constant current sink (CCS).
The upper FET is set up as a single ended source follower (common drain).
It cannot be anything else but ClassA.
__________________
regards Andrew T.
Sent from my desktop computer using a keyboard
  Reply With Quote
Old 30th July 2009, 06:23 PM   #83
diyAudio Member
 
Join Date: Sep 2005
Hello

Thanks AndrewT .
Mostly I ask that question because I thought someone will give a advise about the size of the heatsink required and if these schematic would work in real life. OK they did some sim test but usually that not 100% proof the circuit will work if someone give a try .
Thank any way .

Greets
  Reply With Quote
Old 4th April 2015, 03:52 AM   #84
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON
Blog Entries: 2
Gaboebela, did you have some time to finish this amp and tell us about the sound ?

How do you compare with SEWA, with Aleph ?

Thanks!
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 4th April 2015, 01:58 PM   #85
thimios is offline thimios  Greece
diyAudio Member
 
Join Date: Aug 2009
Location: Agrinion
Quote:
Originally Posted by lineup View Post
Most of us are not afraid of using ouput caps
and build single rail clean & good and easy circuits.

But as there are a few not convinced
by what we are trying to tell, AKSA, Nordic & little me, lineup

I show you a perfect example of what another Master of Audio designs
has to say:

Nelson Pass said:



See attachment for schematic
if you REALLY would like to Follow Master Nelson advice:

- Go Build It !
Any pcb for this?
  Reply With Quote
Old 4th April 2015, 02:35 PM   #86
diyAudio Member
 
Join Date: Sep 2005
I did built the amplifier but I never finished it.
It would be hard to compare some of the mentioned amplifier since I did not kept those after couple months listening.
The SEWA not a bad amplifier I do had problem to drive it. I needed a good preamp, the advised BOZ just did not did it to me.
The Aleph30 is a great amplifier if you can live with the bass you get ( to be 100% honest you have to have the right speaker for that amplifier)!
*I dismantled after 50 hours or so, that was a mistake and I still miss it.
I do think (now) that amplifier would deserve more time to really break in.
About these amplifier I do need a choke to drive the front end separate.
That is the reason I did not tested yet. My friend designed a PC board for these but I do not have the lay out for, I get the ready made PC boards from him.
Greetings
  Reply With Quote
Old 4th April 2015, 03:54 PM   #87
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON
Blog Entries: 2
Thanks for the update - I didn't realize you build so many amps
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  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
200 Watt Lateral Mosfet Amplifier macgyver Solid State 32 14th January 2005 06:37 AM
200 Watt Lateral Mosfet Amplifier and irfp240/9240 tino96 Solid State 39 6th April 2004 12:06 AM


New To Site? Need Help?

All times are GMT. The time now is 12:09 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2