PSU with Simple Source Follower Regulator - Page 4 - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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 2nd February 2006, 12:31 PM   #31
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
Hi Eva,
is your ground symbol connected to the correct end of the load?

As drawn this is the +ve rail supply.
regards Andrew T.
Sent from my desktop computer using a keyboard
  Reply With Quote
Old 2nd February 2006, 12:41 PM   #32
Eva is offline Eva  Spain
diyAudio Member
Eva's Avatar
Join Date: Oct 2003
Location: Near the sea
Send a message via MSN to Eva
Yes, I intentionally arranged it this way to show the possibility of grounding the tabs of the TO-220 devices and using the metal case of the project as a heatsink without mica or sil-pad insulators nor plastic washers. This requires independent floating transformer windings for each supply (not center tapped), though.

Having floating transformer secondaries also allows to employ cheaper N-channel devices for both positive and negative rails, altough the tabs of the power devices from the negative rail won't be gounded and would require insulation.
  Reply With Quote
Old 2nd February 2006, 03:49 PM   #33
diyAudio Member
Onvinyl's Avatar
Join Date: Aug 2002
Location: Germany
that may be a basic question as well; but how to choose a 'low impedance point' where all currents return with such a floating design?
Is it wise to have different grounds?
  Reply With Quote
Old 2nd February 2006, 03:57 PM   #34
Eva is offline Eva  Spain
diyAudio Member
Eva's Avatar
Join Date: Oct 2003
Location: Near the sea
Send a message via MSN to Eva
Only the transformer winding is floating in that design and this is fine as long as the same winding is not employed for anything else. The output of the regulator is not floating, it's grounded... In fact it's ground!

This ground is the one you should use for the rest of the circuit.
  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
Zener + Emitter Follower voltage regulator Alcaid Solid State 90 1st June 2010 11:12 PM
Source follower and common source output stages slogan2112 Pass Labs 2 9th October 2008 08:19 PM
Aleph-type current source, but source follower this time tschrama Pass Labs 4 29th July 2005 12:55 PM
Fet Follower Regulator On Resistance? macka Pass Labs 2 25th December 2004 03:35 AM
Source follower electret mike -> use with current source? capslock Solid State 1 28th February 2003 12:54 PM

New To Site? Need Help?

All times are GMT. The time now is 01:29 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