The simplistic Salas low voltage shunt regulator - Page 601 - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

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 12th May 2013, 11:20 AM   #6001
diyAudio Member
 
Join Date: Jun 2006
I am masuring Q3 and Q4 hfe on multimeter - they are 025 - Is that acceptable
  Reply With Quote
Old 12th May 2013, 11:45 AM   #6002
Salas is online now Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
I have never got a 4403 under 150 hfe.
  Reply With Quote
Old 12th May 2013, 01:29 PM   #6003
diyAudio Member
 
Join Date: Jun 2006
all 4 are 024 - 025 hfe putting on multimeter as In datasheet pin 1 collecor
here what I use http://www.farnell.com/datasheets/1693072.pdf
If I swap transistor and put It on multimeter then I got hfe 345
  Reply With Quote
Old 12th May 2013, 01:42 PM   #6004
Salas is online now Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
What do you mean swap transistor? Turn it, or measure another PNP type like BC560?
  Reply With Quote
Old 12th May 2013, 01:46 PM   #6005
Salas is online now Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
2N4403 is EBC from left to right as we look at its flat face. Use it like that.
  Reply With Quote
Old 12th May 2013, 02:04 PM   #6006
diyAudio Member
 
Join Date: Jun 2006
thank you Salas
I used It opposite - c b e - like Is shown on posted datasheet
  Reply With Quote
Old 12th May 2013, 06:00 PM   #6007
pchw is offline pchw  United States
diyAudio Member
 
Join Date: Apr 2006
Location: Fremont, California
May I ask a question, did you listen to the Shiga before and after the cap trials? I am curious what did that translate into in terms of subjective listening, in this case, of your ears.

I remember seeing a picture that you posted in the Shiga thread some time ago that you had a somewhat long lead to the circuit, and the sense lines were not on the PCB and were half way shorted by a connector. Have you made a change since then? Maybe posting a picture here will also be helpful.
__________________
- Fred -
  Reply With Quote
Old 12th May 2013, 08:08 PM   #6008
JimT is offline JimT  Canada
diyAudio Member
 
Join Date: Oct 2004
Location: Waterloo
I would like an LTSpice spice circuit for the SSLV 1.1 BIB positive mosfet regulator? I searched but did not find one, but this is a very large thread.

Thanks
Jim
  Reply With Quote
Old 12th May 2013, 09:42 PM   #6009
Salas is online now Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Quote:
Originally Posted by samoloko View Post
thank you Salas
I used It opposite - c b e - like Is shown on posted datasheet
Maybe a datasheet error. Possibly the source of your problems if an error indeed and not a peculiar version of the type which is unlikely.
  Reply With Quote
Old 12th May 2013, 10:01 PM   #6010
Salas is online now Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Quote:
Originally Posted by JimT View Post
I would like an LTSpice spice circuit for the SSLV 1.1 BIB positive mosfet regulator? I searched but did not find one, but this is a very large thread.

Thanks
Jim
You got to construct it from this picture because as a file has no script models, refers to my hard disk libraries. *The K117s are GR for IDSS. **The open loop analysis setup for which the virtual sources correct positions and plot function I include in the pic is based on Michael Tian's and colleagues paper. You may Google it.
Attached Images
File Type: png Snap 2013-05-13 at 00.53.15.png (43.5 KB, 371 views)
  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



New To Site? Need Help?

All times are GMT. The time now is 11:21 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