Need help for JFET amplifier - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 6th May 2008, 07:38 AM   #1
diyAudio Member
Join Date: Apr 2008
Default Need help for JFET amplifier

Can anybody recommend a discrete JFET preamplifer whose voltage gain is over 10 with supply voltage is 5V.The frequency of input signal is from 0.1Hz to 20Hz.

I have tried numerous JFET tubes to build up circuit working at Q point but can't get enough gain at low frequency.Attachment is schematic with pspice.

Attached Images
File Type: jpg schematic.jpg (34.7 KB, 146 views)
  Reply With Quote
Old 6th May 2008, 12:07 PM   #2
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
Mooly's Avatar
Join Date: Sep 2007
0.1 Hz to 20Hz, Why not use a FET OpAmp designed for low voltage single rail use. Much easier, much better performance.
What are you trying to do ?
Or a bipolar OpAmp with discrete FET front end.
  Reply With Quote


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
Can I use the 2N5484 jfet diff pair in an audio amplifier front end? carpenter Pass Labs 27 28th March 2009 12:55 AM
Pass JFET Power Amplifier Nelson Pass Pass Labs 447 17th March 2006 04:29 AM
Power JFET Amplifier? Steve Eddy Pass Labs 0 14th September 2005 12:28 AM
JFET voltage amplifier Banfi T. Solid State 17 15th January 2003 02:38 PM

New To Site? Need Help?

All times are GMT. The time now is 09:38 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2