continuity test psu - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 20th September 2013, 09:31 AM   #1
acumos is offline acumos  Italy
diyAudio Member
 
Join Date: Apr 2013
Default continuity test psu

Hi to all, I've finished populating the psu board v3. Now I'm testing it such as suggested in the guide. But if I use my dmm pointing on v+(-) and gnd it starts beeping but then stops and the value increases. Instead if I us the dmm at 20k ohm it displays 1k and increases slightly. ????? Help me.
  Reply With Quote
Old 20th September 2013, 09:57 AM   #2
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
your DVM is charging caps

that's normal
__________________
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 20th September 2013, 10:07 AM   #3
diyAudio Member
 
Join Date: Sep 2004
Location: New Zealand
Quote:
Originally Posted by acumos View Post
Hi to all, I've finished populating the psu board v3. Now I'm testing it such as suggested in the guide. But if I use my dmm pointing on v+(-) and gnd it starts beeping but then stops and the value increases. Instead if I us the dmm at 20k ohm it displays 1k and increases slightly. ????? Help me.
Hi Acumos
My thoughts are you are trying to measure resistance OHMS with DC voltage switched on. Most DMM's don't like this, and although they should not interfere with circuitry - its possible a cheaper DMM may do just that
Suggest you turn power off to then measure resistance. It would help to explain to us what the v3 psu board is, and attached to.

So switch power off before measuring resistance.

Cheers / Chris
  Reply With Quote
Old 20th September 2013, 10:16 AM   #4
acumos is offline acumos  Italy
diyAudio Member
 
Join Date: Apr 2013
thank for your reply. The psu board v3 is the one sold by diyaudio store and I'm testing it unwired prior to connect it in my f5
  Reply With Quote
Old 20th September 2013, 11:37 AM   #5
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
As Zen Mod stated, you are charging the caps when you connect your DVM. If you leave it connected long enough you should reach a steady state highish value (KOhms), depending on the caps used.
  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
New F5 build: Speaker positive showing continuity w/ground Hikari1 Pass Labs 15 5th May 2013 04:20 AM
test bench variable psu reapersdirge Equipment & Tools 5 13th December 2012 09:05 AM
PC PSU test nicoch58 Power Supplies 0 22nd November 2006 08:16 PM
How to test noise level of PSU? Sunsun22 Power Supplies 2 10th August 2006 02:48 AM
Chassis ground continuity? BlackDog Chip Amps 4 8th April 2004 04:45 AM


New To Site? Need Help?

All times are GMT. The time now is 02:44 AM.


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