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Steve Conner

Tue Sept 08 2009, 09:55AM

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

You welded aluminium with a torch? High five! It's not exactly the easiest thing in the world to do.

Austin

Tue Sept 08 2009, 03:30PM

Registered Member #1169 Joined: Wed Dec 12 2007, 09:16AM
Location: Portland OR
Posts: 251

Dr. Spark wrote ...

Dr. Russell suggested popping in here once in while.

Can you say 15,000watt Liquid Cooled Class E Cathode modulated.

Henry in now playing and first fire @ more filter/ work indeed.......However big Mica Caps requiredâ€¦.

Back Underground,
Dr. Spark

I always thought it would be neat to liquid cool my IGBTS, similar to a computer's liquid cooling setup

Hon1nbo

Fri Sept 11 2009, 02:22AM

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

I redid the HDR I posted above of the Inwood Movie Theater, still not perfect but I don't want to spend too much time on it because I want to work on others, and here are a few others...

the other photo here is from Field Day (I FINALLY took it from the Dallas Amateur Radio Club site), I am on the left. W5DJK and I were trying to make contact with a station that, quite literally, had a 45 second CQ call... he called "CQ Field Day" at least twenty times before stating his call sign, then called CW an additional ten times, then his call sign again and left about 10 seconds before he called CQ again... we never worked him

DSCF1337

1252635762 902 FT6000 Inwood 02 Beta Copy

flannelhead

Fri Sept 11 2009, 02:05PM

Registered Member #952 Joined: Mon Aug 13 2007, 11:07AM
Location: Finland
Posts: 388

DaJJHman wrote ...

I redid the HDR I posted above of the Inwood Movie Theater, still not perfect but I don't want to spend too much time on it because I want to work on others, and here are a few others...

Nice work! How many exposures, and what TMOs did you use?

Avalanche

Fri Sept 11 2009, 06:59PM

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

Every time I go to Poland for work, I'm greeted with something which looks like a Tesla coil! Any ideas what this is?!

Hazmatt_(The Underdog)

Fri Sept 11 2009, 07:31PM

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

It's a tracking radar inside a weather protective housing, they look like big white soccer balls.

Hon1nbo

Sat Sept 12 2009, 04:12AM

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

Dr. 2N3055 wrote ...

Nice work! How many exposures, and what TMOs did you use?

that was three exposures, one under, one just right, and one over - I used PhotoShop for this one, as I now have access to the school computers - but my teacher (not photography teacher, I never took a photo class) suggested another program to try, I think he said imagemajix? - I am a little fuzzy on the name, I only got to talk to him for a couple minutes between classes about it.

I spent about 30 minutes, trying lots of different adjustments and tweaks, but the most effective were careful level and contrast adjustments

flannelhead

Mon Sept 14 2009, 05:47AM

Registered Member #952 Joined: Mon Aug 13 2007, 11:07AM
Location: Finland
Posts: 388

DaJJHman wrote ...

my teacher (not photography teacher, I never took a photo class) suggested another program to try, I think he said imagemajix? - I am a little fuzzy on the name, I only got to talk to him for a couple minutes between classes about it.

Could it have been ImageMagick? According to this page it can do HDR. I think I'll have a try...

Mads Barnkob

Thu Sept 17 2009, 08:40PM

Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968

Here is my new lab smps!

It was obtained from my work, at a auction over unused stuff, I got it at a mere 14 euroes!

Its a adjustable 2 - 57V smps rated at 25A, featuring selectable overvoltage protection, 32A output circuit breaker and a 10 turn potmeter for voltage regulation.

It is a heavy unit that I have pulled out of its transport enclosure, it was made for Televerket (scandinavian telecom company), its named ESP 630 and I have not been able to find much about it.

Comes with heavy jumper cables and have so far been tested on a 100W resistor pushing it with 40V at 6.25A, 250W, also tried pushing 48V at 9.6A, 460W into my ZVS driver... I need to find some load that can take this smps to its limits, I want the 5 fans in the casing to start :)

...

Thu Sept 17 2009, 09:23PM

Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445

That is a nice supply there

Be careful running flyback drivers from it, I fried a nice 40v 10a supply with I had some noise get back into it

Lightwave Electronics (now JDSU) 210g 2.5w 532nm (green) laser system, and a Coherent Avia THOR 15w 355nm (UV) laser system

400mw 473nm DPSS Laser, and beamshot of it with 50mw of 532nm and 200mw of 632nm.

The pile of broken glass in the Avia head after UPS shipped it (the hardware was left over from taking out the 10 million screws to get to that picture), and a closeup of the 210g head.

The avia has had a UPS insurance claim paid out on it, and they let me keep the head, so while it will probably never lase in the UV anymore, I should be able to get about 100w of 1064nm (IR) from the pump modules, which were resilient enough to survive shipping in tact

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