Tube amps and electric safety - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 21st March 2004, 09:22 PM   #1
Svante is offline Svante  Sweden
diyAudio Member
 
Svante's Avatar
 
Join Date: Feb 2004
Location: Stockholm
Default Tube amps and electric safety

HI all.
I have never built a tube amp, and can barely read the schematics of tube designs. I was just looking through the other thread with photos of home-built tube amps when I got to think of... Safety.
Are these things at all isolated? I mean, tubes typically operate at higher voltages than transistors, right. Yet everything is exposed to the fingers of curious kids. Or is there some secret layer of insulation that I don't see there?
__________________
Simulate loudspeakers: Basta!
Simulate the baffle step: The Edge
  Reply With Quote
Old 21st March 2004, 09:29 PM   #2
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
There's a whole thread on safety in the Everything Else category.

IMO, it is irresponsible to let kids near tube equipment; mine is behind a fence. The tube equipment, that is, not the kid. I tried it with the kid and got a nasty visit from Child Protective Services.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 21st March 2004, 09:34 PM   #3
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
Isolated: almost always. I've made a few designs that are line-operated, the first due to inexperience; the second (will have) input and output transformers and a grounded chassis preventing possibility of line contact.

As for the HV itself, you just don't get your fingers stuck in there! When (not if) you do, across just one hand or finger probably isn't going to hurt much (a few months ago I got 500V across my left index finger, felt just like 120VAC!) and certainly not be fatal; however if it goes between your hands, that's a problem.

Tim

P.S. Queue another monster safety thread... l8rz
__________________
Seven Transistor Labs
Projects and Resources
  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
Grommes / Western Electric G5M Tube Mixer Mods tablebeast Tubes / Valves 9 25th May 2010 11:17 PM
Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5 quality sound Tubes / Valves 0 9th May 2009 03:59 PM
Sophia Electric 300B tube Evenharmonics Tubes / Valves 2 9th May 2009 02:51 PM
Tube Safety Jhovis Tubes / Valves 7 9th May 2004 05:04 AM
Document on electric safety Christer Everything Else 0 22nd October 2003 09:51 AM


New To Site? Need Help?

All times are GMT. The time now is 05:21 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