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Here is an uncompressed nightshot of my church taken with this camera. Exposure was 10 seconds at iso100, only light available was a streetlamp 75 yards away and cloud diffuse moonlight. http://uiu.me/9LR.jpg Ain't that a nice photo? ;)

I want to upgrade my DSLR so I needs some ca$h. What I have to sell is my sony a300 camera + the stock 18-70mm lens, battery and charger. Takes pretty awesome photos, and aside from some cosmetic scratches it works just fine. I'm asking $460 for this one considering they retail new for about...

Ahh, here's the thread. Anyway, junkbox got an upgrade! Whatchyu guys think? http://www.junkbox.org/index.php? PS: Laser categories now! Handheld lasers > http://www.junkbox.org/index.php?&category=37&subCategory=handLasers Hosts >...

Re: Junkbox v1.5b1 Well I don't host external images, so not my problem :-). Images now enabled, and all errors fixed. (errors occurred while I was replacing the php files)

Re: Junkbox v1.5b1 Lolwhoops, supposed to be trim(). Fix'd. I didn't enable image bbcodes since we would end up getting a huge mess like LPF (5 megappixel images). But now that I think of it, I can just use the size attribute. Lemme see if I can do that...

20 hours of constant coding to get this working... Anyway, junkbox got an upgrade! Whatchyu guys think? :o The junkbox! - All Junk PS: Laser categories now! Handheld lasers > The junkbox! - Light Hosts > The junkbox! - Light Parts > The junkbox! - Light Feel free to fill 'em up guys :whistle:

^^That thing would probably weld shut with my bank.

I has no contactor!

I've had it with mosfets, so I'm doing it old skool now. http://uiu.me/tzz.jpg * 3 stage CW, should have supplied 509V but gives 890V. * Isolation transformer on the bottom, entire HV side is floating so I won't die if I touch either (but not both) wires. * Relay on both the input and output...

Circuits! Teravolt.org - Circuits

I want to make a deer-spotting light with one of those huge LEDs! So, anyone up for the offer?

A ZVS and a large flyback should do a good job powering the tube, but you will need a ballast resistor. As for triggering, the simplest thing to do would be to use a trigger transformer.

I hope you know that switching with only one fet will create A LOT of heat. LOTs, and at 42A you better have one hell of a water cooled heatsink. That's why people use bridge circuits.

I wouldn't take chris's claims with any certitude...

How so?

I wouldn't be suprised if in 5 years we'll have 5W R-G-B diodes in a single can with all the pico projector madness going on.

I tossed it; the thing was all carbon. I took my other transformer and wound a primary on the same side as the secondary. The caps charge quite fast, bout as fast as the now-dead transformer. However it requires a 1/4" gap otherwise it starts with the parasitics. I think I need a new driver...

Yes. I think the transformer tossed out a lot more volts than expected when it started going into parasitic oscillations.

Oh it made some bangs alright, this time the caps made sure the transformer died. I think I'll go back to my old transformer now... I pulled that core out of a kodak x-ray machine, so idunno.

The secondary is ok, as the diodes exploded before the wire did. At least they went out in a blaze of glory. http://i.imgur.com/skdUN.jpg While I thought the fun was over for 4th of july, I just found a 30A 1200V ultrafast diode. Time to make some noise! :)