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Mystery Photos from TDU

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LAN_403

Tesladownunder

Mon Jun 19 2006, 02:51PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

For anyones information, TDU is the popular abbreviation for Tesladownunder. First time I've used it though.

The Mystery photo with the blue green laser background showed a central area which seemed to be enlarged. It was in fact me holding a simple lens at just the area where the enlargement covered the shadow of the rim of the lens. The lens was supported by a plastic tie which I was holding between two fingers.

Peter

Billybobjoe

Fri Jun 23 2006, 04:52PM

Registered Member #396 Joined: Wed Apr 19 2006, 12:55AM
Location: Pittsburgh, PA
Posts: 176

My turn - what is this:

Marko

Fri Jun 23 2006, 04:59PM

Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145

Nick T. wrote ...

My turn - what is this:

posthumous remains of flat cable?

Electroholic

Fri Jun 23 2006, 10:15PM

Registered Member #191 Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720

looks more like speaker cables
melted together, the whole spool, just fused together.
then you some how cut it in the middle and take the core out?

Billybobjoe

Fri Jun 23 2006, 11:43PM

Registered Member #396 Joined: Wed Apr 19 2006, 12:55AM
Location: Pittsburgh, PA
Posts: 176

Electroholic wrote ...

looks more like speaker cables
melted together, the whole spool, just fused together.
then you some how cut it in the middle and take the core out?

Can't get much closer than that - its speaker cable I used to rewind a MOT sized transformer with and it shorted itself, melted together, than I cut it off the core. Its actually convienent now because I can pull off the wires that aren't burned (just heated a bit so they stick together) and use them as temporary low voltage leads.

benbradley

Sun Jun 25 2006, 03:06AM

Registered Member #312 Joined: Mon Mar 13 2006, 01:50AM
Location: Georgia, USA
Posts: 27

Considering the topic is mystery photos from TDU, I highly doubt that.

Maybe you got me, though I was thinking of the topic of the BOARD, that being General Science and Electronics. It could possibly be Computer Science, though certainly not for MODERN computers.

ferrite core store beads?

Yea, I'll vote for ferrite cores too, and it looks like you have about 4096

Okay, can't sneak much by you guys, but these are amazingly small and I thought that might fool you. I've never seen cores that are anywhere NEAR as small as these. These are approximately .030 inch outside diameter, much smaller than I expected when I ordered them. There's a date on the package of 1981, so these may be the last (and smallest) ferrites made for computer memory storage. I was hoping to wire up a few but I can hardly even SEE them. I guess I'll keep these, but I'll have to order some larger ones if I can find them.

Quite frankly, I didn't believe I would actually get the quantity the seller stated. I haven't counted them (!) but it looks in the ballpark. I suspect the quantity in my pic is likely in the 10,000 to 50,000 range (remember these are piled up around the pins), and that's no more than ten percent of the pack I poured it from. I have a total of 1.8 million (three packs of 600,000) from this eBay auction:

Could those be the raw plastic pellets that the push pins are formed from?

Nope.

...

Sun Jun 25 2006, 04:05AM

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

kind of amazing... That whole bag of ferrite beads, the whole lot of them after being wired up into a module costing soo much, is like 5% of a floppy disk

and to try to sorta keep this thread somewhat on topic...

We need more pics TDU

Electroholic

Sun Jun 25 2006, 07:07AM

Registered Member #191 Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720

i just gutted a SMPS, and I found some slightly larger ferrite beads (2mm OD) on the leads of some dual diode. see if i can get some pix later...
what are they for?

Tesladownunder

Sun Jun 25 2006, 08:19AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

... wrote ...

We need more pics EVR

Err.. TDU?

Having a rush job doing some stuff on the Uni can crusher but here is a quick one from a few moments ago.

Mystery Photo 21

Peter

Tesladownunder

Thu Jun 29 2006, 03:51PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

So no guesses for the last post (mystery photo 21)

So one more chance. While you think about that I have this one.

Mystery photo 22

Peter

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