Capacitor explosion. - Page 3 - diyAudio
Go Back   Home > Forums > Design & Build > Parts
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 23rd March 2010, 04:05 PM   #21
CBS240 is offline CBS240  United States
diyAudio Member
CBS240's Avatar
Join Date: Aug 2005
Location: K-town
Caps aren't the only thing that can explode. I built a V-reg circuit for +/-40V @5A using TO-220 mosfet series pass devices. I accidentally shorted one of the outputs and the transistor exploded. (early lesson about using fuses was learned here ) A chunk of the plastic case hit me in the forehead close to my eye. It left a mark, drew a spot of blood! Less than an inch down and I would be blind in my left eye. I’ve never seen a transistor like that before or since explode leaving a crater in the plastic package where the die used to be before it vaporized.
All the trouble I've ever been in started out as fun......
  Reply With Quote
Old 6th April 2010, 09:53 PM   #22
diyAudio Member
TubeHead Johnny's Avatar
Join Date: Jan 2005
Location: The emerald city, Seattle, WA.
He obviously doesn't know what a variac is!
"No man really becomes a fool until he stops asking questions" - Charles Proteus Steinmetz
  Reply With Quote
Old 7th April 2010, 05:39 AM   #23
diyAudio Member
Join Date: Apr 2009
The variac is the light blue thing in the corner of the bench. In the description, he mentions powering it up with the variac and light bulb limiter (with the deep blue base) and it apparently worked fine until the cap randomly exploded. Needless to say, I'll be wearing my safety goggles more often.

- Scott
  Reply With Quote
Old 9th February 2011, 02:35 AM   #24
diyAudio Member
Join Date: Feb 2011
Default I pressed the exploder button !

Hello guy's, I see that this is an old thread, but I need to post something in response to your questions. I amp the one that got exploded upon.

Attached is a photo of me after the explosion.
It was not a fun experience....

Be safe,

Attached Images
File Type: jpg IMG_0137.jpg (91.6 KB, 364 views)
  Reply With Quote
Old 9th February 2011, 03:50 AM   #25
taj is offline taj  Canada
diyAudio Member
taj's Avatar
Join Date: Feb 2005
Hi Bernie. The video in the original post is no longer available. Do you still have it kicking around? I'd like to see it.

Judging by the mess... "she blowed up real good!"

  Reply With Quote
Old 9th February 2011, 04:00 AM   #26
diyAudio Member
alexmoose's Avatar
Join Date: Mar 2006
Location: Michigan

if you have a facebook, I sure hope this is your profile pic.
  Reply With Quote
Old 9th February 2011, 05:30 PM   #27
diyAudio Member
Tubelab_com's Avatar
Join Date: Jul 2005
Location: West Virginia panhandle
I have exploded just about every kind of electrical component made. Even the new vented caps will explode violently if the failure mechanism can dump energy into the cap faster than it can vent. Plastic cased semiconductors can also explode. I have blown them so bad that there is 3 stubs and a black mark where the transistor used to be. I have even seen the pieces of silicon come through the can on a TO-3. SMPS's powered directly from the power lines are good for a big bang.

When you build something totally outrageous, powered by a 1500 volt 1/2 Amp power supply, you put a 1/4 inch sheet of Lexan between it and yourself, grab a fire extinguisher, then hit the explode button.

The 833A SE Amp Prototype
Attached Images
File Type: jpg 833AFreqRespTest2a.jpg (77.6 KB, 265 views)
Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
  Reply With Quote
Old 9th February 2011, 07:37 PM   #28
diyAudio Member
rcavictim's Avatar
Join Date: Jun 2004
Location: Next to an open wormhole NW of Toronto
I just tried to VU the youtube video. It is no longer available.
"There are more worlds than the one you can hold in your hand." Albert Hosteen, Navajo spiritual elder and code-breaker, X-Files TV Series.
  Reply With Quote
Old 9th February 2011, 10:00 PM   #29
diyAudio Member
Join Date: Feb 2011
Default reply

The plexi blast shield looks like a good idea! Probably should be 1/2" lexan though? I also have blown up many components, but this was by far the worst. My face was only 4" from the path of the aluminum can as it rocketed to the sealing.

I lost access to my old youtube account and it went away. I will post the video again and put a link in this thread.

  Reply With Quote
Old 9th February 2011, 10:36 PM   #30
taj is offline taj  Canada
diyAudio Member
taj's Avatar
Join Date: Feb 2005
Originally Posted by View Post
...will explode violently if the failure mechanism can dump energy into the cap faster than it can vent.
I have that problem too. I've offered to hand out Lexan shields, but I've been told cognitive therapy is probably a better option. I'm still laughing at the size of those transformers, George. Them'r cap explodin trannies!


Last edited by taj; 9th February 2011 at 10:39 PM.
  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
Explosion in Forte 1A... needtubes Pass Labs 26 2nd July 2010 10:39 PM
Preamplifier damaged explosion Class-d Crest lee1976 Class D 2 21st November 2009 06:39 PM
what is this capacitor? ASSaBeong Parts 2 7th April 2007 03:13 PM
200w Amp + 900w Sub = explosion? 56k Warning Daemonicus Subwoofers 2 31st May 2006 04:30 AM
Capacitor or not? future Parts 2 24th June 2003 11:10 PM

New To Site? Need Help?

All times are GMT. The time now is 03:04 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