how do you discharge your caps? - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 28th March 2003, 01:51 AM   #1
diyAudio Member
 
Join Date: Apr 2002
Location: orange ca
Send a message via AIM to travis
Default how do you discharge your caps?

what's your preferred method of discharging your big caps? i'm going to work on my sovtek's tone controls because they don't work.
__________________
donuts
  Reply With Quote
Old 28th March 2003, 01:57 AM   #2
diyAudio Member
 
Join Date: Dec 2000
Location: 3rd rock from the Sun
Default Cap discharge

Use a large ( 3 watt ) 470 ohm resistor or something similar. You will need to hold it across the cap for at least 30 sec if it is very large in value ( like 20,000uF).The value avoids sparking due to large currents. Caution: Make sure the mains power is OFF !
Hold the resistor with a plier or make an insulated grip for it with a piece of cardboard.
__________________
Fantastic
  Reply With Quote
Old 28th March 2003, 01:58 AM   #3
diyAudio Senior Member
 
fdegrove's Avatar
 
Join Date: Aug 2002
Location: Belgium
Default DISCHARGING CAPS.

Hi,

Hmmm...they should have a bleeder resistor somewhere.

In case they don't- not a very wise practice-you could put a 220K across them and monitor them discharging through a voltmeter.

Don't just short them with a metallic object, it will damage the caps, not to mention the spark you'll see.

Cheers,
__________________
Frank
  Reply With Quote
Old 28th March 2003, 02:00 AM   #4
diyAudio Member
 
Join Date: Apr 2002
Location: orange ca
Send a message via AIM to travis
man, this thing is too hard to take apart. i wanted to be like "hey dad, watch this" and then put a screwdriver across or something. i think i'll take this too a tech. its used and i have never had it inspected.
__________________
donuts
  Reply With Quote
Old 28th March 2003, 03:02 AM   #5
diyAudio Member
 
Sch3mat1c's Avatar
 
Join Date: Jan 2003
Location: Milwaukee, WI
Send a message via ICQ to Sch3mat1c Send a message via AIM to Sch3mat1c
With my tounge.

Nah, I usually watch it with a voltmeter, long as I saw it fall at a rate slower than that which the meter falls at if the contact came loose, and shows some residual, maybe just a few volts - then I short it with a screwdriver or pliers for piece of mind.

If I'm having a slow day sometimes I'll short it with voltage still in it (not to say it's still powered!), but I don't recommend doing this habitually.

Tim
  Reply With Quote
Old 28th March 2003, 04:25 AM   #6
diyAudio Member
 
stokessd's Avatar
 
Join Date: Nov 2002
Location: Grantham, NH
I'm suprised that nobody said "jesus stick"...



Sheldon
  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
discharge capacitors drumlins4ever Solid State 2 13th February 2009 07:41 PM
capacitor discharge? epicfabrication Parts 1 25th September 2008 12:12 PM
need to discharge psu safely Aidan135711 Tubes / Valves 6 8th March 2008 10:03 PM
gainclone PSU- how to safely discharge caps? sansbury Chip Amps 11 27th March 2007 09:05 PM
Capacitor discharge thkking Car Audio 16 11th June 2005 07:26 PM


New To Site? Need Help?

All times are GMT. The time now is 01:41 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