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LAN_403

Arcstarter

Mon May 11 2009, 08:18PM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

Dr. Spark wrote ...

Finally, after 6 months of searching, found the perfect Stancor / Triad 9VRMS 1kVa Filament Transformer for my new bottle. Sweeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeet indeed!

Spark on,

That is INDEED a sweet tube! That sure is a heck of a filament transformer too.

aonomus

Tue May 12 2009, 05:27AM

Registered Member #1497 Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801

So I got a new (expensive!) gadget. I got the Yaesu FT-857 radio (the scanner on-top I already had). I ran it off a battery I have for this photo, but otherwise it will be powered by a beefy PSU.... once I get my license that is.

Hazmatt_(The Underdog)

Tue May 12 2009, 06:29AM

Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735

HAHAHHA!! I told you battery!

Myke

Fri May 15 2009, 01:23AM

Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969

These pics are of my first tube stuff that I designed.
This is a picture of the very first tube thing I designed without the use of schematics or design plans. I just used the data sheet for the 9002 and messing around with the values to see what did what. It's just a basic amplifier that I built for proof of concept purposes.

This is a Clapp oscillator that uses the 12BE6. I chose this tube because it can have a signal fed into the third grid for audio modulation. I found the general layout of the Clapp oscillator in a small transmitter schematic. I replaced the crystal with a cap and inductor in series. Right now, my scope's calibration is all weird so I can't measure the exact freq but I calculated it to be about 8MHz.

Here is the scope trace of it. The green area above the actual signal is caused by the ripple in the power supply. I didn't have a good filtered supply for the plate so I used two 12V transformers to be used for isolation and also for the filament supply.

Here's the ripple that's seen on the output. I know... it's a lot of ripple but this is seen though a DC blocking cap.

Hon1nbo

Fri May 15 2009, 03:28AM

Registered Member #902 Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042

some various Pics from my Atomic Collection... some came from Teachers, some from trades, eBay, and Chemical Suppliers...
Autinite Uranium Ore (with and without a Black light)
my Radioactivity Container of Lead (a "PIG")
a piece of Trinitite
a tube of Trinitite fragments
a piece of Uranite Uranium Ore, a little smaller than my hand
a piece of Uranium Metal (99.99% pure)
a Uranium Glass Marble (I have a full set and do actually play marbles with them)

1242358093 902 FT6000 Uranium Marble Macro

Lakeowner

Fri May 15 2009, 11:44PM

Registered Member #1370 Joined: Mon Mar 03 2008, 09:01AM
Location: Finland
Posts: 56

aonomus wrote ...

So I got a new (expensive!) gadget. I got the Yaesu FT-857 radio (the scanner on-top I already had). I ran it off a battery I have for this photo, but otherwise it will be powered by a beefy PSU.... once I get my license that is.

Congratulations for your new rig! Hope you get your licence soon. Nice Powerpoles there, too :).

Killa-X

Sat May 16 2009, 03:28PM

Registered Member #1643 Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039

I got my stuff from ebay the other day. 4 Mosfet / Peltier heatsinks (24-fin) for $15 after shipping (Works great with my peltiers.) I also got 6 fans for $12 after shipping, to help my peltiers cool. I planned to maybe someday use these heatsinks for my mosfets, maybe for a mini SSTC, but for now they work very good with my peltier :) Frost is fun!

Hon1nbo

Sat May 16 2009, 06:51PM

Registered Member #902 Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042

here are some Pics of Fireworks I took last night at a Texas Rangers baseball game...

I will update this post with a link to some semi-slow motion youtube videos in a few minutes... the uploader might take a while though, does anyone know if certain codecs upload faster by chance?

Avalanche

Sun May 17 2009, 10:04PM

Registered Member #103 Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845

Nice IGBT explosion photos

800 Amps is just... 800 amps. It just sounds good. This is a panel I made at work last week, and sprayed matt black, before fitting those meters, which can go up to 800 amps. Eight Hundred Amps. I'd better not have any more beers, I've got to test it tomorrow!

Steve Conner

Sun May 17 2009, 10:53PM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

The headless biker strikes again!
And again!

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