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Induction heating
Yes, the bank is 100 x 0.1uF 275VAC MKPs -- unusually small though. They get hot at 3A each! Unfor ...
25-6-2009 at 20:03
by: 12AX7
The short questions thread (2)
The classic monoalkylamine synthesis involves phthalimide as a protecting group. Because the two ca ...
25-6-2009 at 14:18
by: 12AX7
Fused quartz tes tubes
You can basically melt iron in them, then immediately quench in water, and still have a test tube.
...
25-6-2009 at 13:59
by: 12AX7
Induction heating
The air gap isn't -- since nearly all the flux is enclosed in the toroid, it just matters that the s ...
25-6-2009 at 13:58
by: 12AX7
Induction heating
How much essence are we talking?

The control circuit is different (e.g., quasi resonant), the inv ...
25-6-2009 at 02:45
by: 12AX7
Induction heating
I'd go with something Atmel (rather than use an Arduino, I'd cook my own hardware), PICs are stupid. ...
24-6-2009 at 23:09
by: 12AX7
Induction Heating
Induction heating has come up here on occasion. I thought some might be interested in the recent pr ...
24-6-2009 at 14:55
by: 12AX7
Why does Fusion work?
Yeah, it would be elegant if the universe collapsed again, in an infinite(?) series of bangs and cru ...
24-6-2009 at 01:47
by: 12AX7
Why does Fusion work?
Good answer.

Gravity does not run out of the ability to do work because the universe has not ran ...
23-6-2009 at 03:10
by: 12AX7
The Synthesis of Sulfur Trioxide and Oleum: the vanadium (V) oxide-catalyzed method
Will the sulfur not be oxidized by the SO3?

Tim
23-6-2009 at 03:06
by: 12AX7
How is a continuous spectrum formed?
How could it not?
21-6-2009 at 01:43
by: 12AX7
info concerning induction heating/furnace
Indeed, and a furnace consisting of a graphite heater is described in Brauer, for use up to 2000C.
...
20-6-2009 at 12:50
by: 12AX7
Why does Fusion work?
So, you're asking something like this?

Let's say you have a big ball of gas out in space, initial ...
19-6-2009 at 13:40
by: 12AX7
info concerning induction heating/furnace
No problem, that's trivially easy to do. Also a good way to get the FCC's attention, too. There's ...
19-6-2009 at 13:23
by: 12AX7
Basic solutions?
Anions with a fairly high pKa react with water to form some concentration of hydroxyls (lowering pOH ...
16-6-2009 at 23:41
by: 12AX7
Balancing a super hard Redox.
Hydrogen becomes water. Or since you started with the acid, you might show it as ending with anothe ...
16-6-2009 at 23:37
by: 12AX7
MOT supply for electrolysis
Ah, then that's going to be 8000 / 25^2 = 12.8 uH/T^2. But that's also initial permeability. Highe ...
16-6-2009 at 06:23
by: 12AX7
Chemical engineering question - calculation of lag phase?
The subsequent solutions are, I believe, of the form A * x^n * e^x. The first, [A], has n = 0. As ...
16-6-2009 at 06:10
by: 12AX7
Art in Science
Marble patterns can be printed using pigments and water. More of a hydrodynamic thing, being that i ...
15-6-2009 at 10:52
by: 12AX7
Does anybody brew/ Make wine here?
I'm sure what they mean is, it tastes the way cat pee smells. If they tend to be more literal in th ...
15-6-2009 at 10:47
by: 12AX7
Are metallic bonds a form of covalent bond?
Metallic bonds also have much higher coordination order, 8 or 12 nearest neighbors for instance. I ...
15-6-2009 at 07:52
by: 12AX7
Does anybody brew/ Make wine here?
Hah, I wonder if that's due to the pinapple esters (ethyl butyrate IIRC!) breaking down.

I'm goin ...
15-6-2009 at 07:48
by: 12AX7
MOT supply for electrolysis
[rquote=154958&tid=12312&author=dann2]
I sawed an MOT in half and can get 0.35mH per turn w ...
15-6-2009 at 07:45
by: 12AX7
MOT supply for electrolysis
Like I said, gap allows more energy storage.

For example, a ferrite dual E core such as used in y ...
13-6-2009 at 11:35
by: 12AX7
Brush shorting VARIAC?
Nah, you're looking at leakage inductance of that shorted turn, which is going to be on the order of ...
13-6-2009 at 11:01
by: 12AX7
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