"Mainframe" breadboard - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 14th August 2003, 12:17 PM   #1
diyAudio Member
jeff mai's Avatar
Join Date: Aug 2002
Location: Melbourne
Default "Mainframe" breadboard

I've decided I want to build the ultimate breadboard. I have this sturdy little hanging file cart that has room to mount two 18" x 26" work surfaces, one 18 inches above the other. This may not be quite big enough, but you get the idea.

Two rails (probably just steel angles) on standoffs running the length of the top surface will allow interchangeable valve socket plates to bolt on. Banks of euro-style terminal strips on either side will receive the leads from the valve sockets and connect them to passives. Mains AC will come up from below on one side for filament / heater circuitry. Filtered B+ will come up the other side.

The lower board will hold the 3 Variac controlled B+ supplies. Again, interchangeable socket plates will allow changing rectifier types. Other components can be swapped in and out of the PSU.

What I'd like to hear from you fellas are ideas for dealing with the issues of:
safety - most important
distributing mains AC to multiple switched points on the two surfaces
distributing B+ from one surface to the other
any other nifty ideas

I want to build this "mainframe" to handle future whims, in particular the possibility of running 1200VDC B+ for 845s, etc. The PSU components may not handle this sort of voltage right away, but I want the wiring to be ready for it.

I'm already using a "link" bar as a signal ground bus in my current breadboard. I'd like to take advantage of anything else my local electrical contractor supply can offer to make this a proper and safe job. Problem is, I know nothing about AC power distribution and what things are out there that I could incorporate.

Keep in mind this isn't really your typical breadboard for mocking up prototypes. I want to use this for ongoing exploration. There is a good chance it will be hooked up to the main system a fair bit of the time.

Thanks in advance for your suggestions and tips!

  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

New To Site? Need Help?

All times are GMT. The time now is 10:39 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