Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

Gyuri's Pass SONY VFET2 build.
Gyuri's Pass SONY VFET2 build.
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 7th October 2017, 06:48 PM   #151
Gyuri is offline Gyuri  Hungary
diyAudio Member
 
Gyuri's Avatar
 
Join Date: Nov 2003
Location: Budapest
I have two Veteran's PSU panel/channel, with four 22000uF caps on each PSU board, so total of four PSU board/amp.
There are two 0.47Ohm resistors parallel, on each panel in middle of.
__________________
Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat
  Reply With Quote
Old 7th October 2017, 06:53 PM   #152
Gyuri is offline Gyuri  Hungary
diyAudio Member
 
Gyuri's Avatar
 
Join Date: Nov 2003
Location: Budapest
On two parallel 3 watt 0.47 Ohm resistor there is flows about 1A current.
There is a voltage drop about 220mV, so I really can't understand, what happened and why.
__________________
Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat
  Reply With Quote
Old 7th October 2017, 07:13 PM   #153
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Gyuri's Pass SONY VFET2 build.
put 5W WW there

most probably initial current
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
  Reply With Quote
Old 7th October 2017, 07:51 PM   #154
Gyuri is offline Gyuri  Hungary
diyAudio Member
 
Gyuri's Avatar
 
Join Date: Nov 2003
Location: Budapest
Thanks.
It might be a good idea.
__________________
Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat
  Reply With Quote
Old 8th October 2017, 06:28 AM   #155
wintermute is offline wintermute  Australia
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Gyuri's Pass SONY VFET2 build.
On a somewhat similar note (initial current) which in this case is probably a whole lot more!

B1 Buffer Preamp

Tony.
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos
  Reply With Quote
Old 8th October 2017, 06:50 AM   #156
Gyuri is offline Gyuri  Hungary
diyAudio Member
 
Gyuri's Avatar
 
Join Date: Nov 2003
Location: Budapest
Yes, VU-meters showed an initial over voltage on R32.
These were not calibrated.
Also, DMMs too lazy to show initial peak correctly.
Perhaps I can measure it with one of my scope.
In this case Tek 2440 would be appropriate I think.
But I must pay attention to measuring arrangement, I can't connect ground lead to any legs of R32 of course.
__________________
Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat
  Reply With Quote

Reply


Gyuri's Pass SONY VFET2 build.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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
PCBPCBs for Nelson Pass‘ CSX1 SONY VFET amplifier permaneder Group Buys 419 6th October 2017 02:17 PM
GB Pass SONY VFET Version 2 - AL Boards by Tea-Bag Tea-Bag Group Buys 57 17th September 2017 09:16 PM
FS: Nelson Pass "VFET2" Front End PCBs luvdunhill Swap Meet 35 26th June 2017 10:21 AM
What is the difference in VFET1 and VFET2 sound? anilva Pass Labs 6 29th July 2015 01:21 AM
I'm going to build a Pass XOno. Gyuri Pass Labs 131 5th January 2014 12:07 PM


New To Site? Need Help?

All times are GMT. The time now is 01:15 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki