Whats a divergence meter.

[dr pepper]

Seen a few references to a 'divergence meter', a gizmo with nixie
tubes, or what look like them.
Looks like something to do with a film on TV, so probably a little
gimmicky.
Can anyone elaborate on what one of these is?
Might be a money earner for those building clock kits.

[Nick]

Its NOT REAL!
http://www.youtube.com/watch?v=D66Lhu-Mtpc

HTH !

Nick

[GastonP]

On Monday, August 6, 2012 7:50:34 AM UTC-3, dr pepper wrote:

Seen a few references to a 'divergence meter', a gizmo with nixie
tubes, or what look like them.
Looks like something to do with a film on TV, so probably a little
gimmicky.
Can anyone elaborate on what one of these is?

http://en.wikipedia.org/wiki/Steins_Gate

It's a device to measure divergence between an original timeline and the current one. *In that game /manga / anime*

I'm afraid that I'd be more interested in a device used to change the timelines than in a device measuring the changes :) 

[threeneurons]

Ask Stewie Griffin to make you one:

http://www.youtube.com/watch?v=1AeLnu7Jsdc 

[dr pepper]

Not sure but I think its a device used in a cartoon type film or
series, some boffin builds a machine to tell the diffrence in time
between different worlds so that you can travel between then, the
divergence meter is used to set the travel machine.

I'm sure I got that completely wrong, seeing as it doesnt interest me
a great deal cant say I'm that bothered.

However there are a few that have built such things and integrated
them with nixie clocks, hence my post here.

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>
> - Show quoted text -

[Frank Bemelman]

Why fiddle with problematic stepup converters?
Here's a very simple way to get 180V (or more) using 9V batteries.

http://www.youtube.com/watch?v=pNR5_Kj3nA4

Frank

[Adam Jacobs]

This is actually common practice in circles that use mobile vacuum tube
radios. Placing a stack of 9-volt batteries in series (which are
themselves, actually a stack of 1.5v cells in series) to create a modern
"B" battery. This works fine, since the "B" battery is a low current
draw supply.

-Adam

[John Rehwinkel]

> This is actually common practice in circles that use mobile vacuum tube radios. Placing a stack of 9-volt batteries in series (which are themselves, actually a stack of 1.5v cells in series) to create a modern "B" battery. This works fine, since the "B" battery is a low current draw supply.

The B batteries were made the same way. An Eveready 497 (NEDA code 741) produces 510V from 336 cells in series.

- John

[Charles MacDonald]

On 12-08-10 03:46 PM, John Rehwinkel wrote:

> The B batteries were made the same way.

There were 22.5 and 45 volt models that were albout the same size as a
modern 1604 (006P) 0V battery.

The 0V batteries are nicely designed as you can snap them together in a
row and use one cut appart snap to gather the required voltage. 5 units
will give 45 volts, common in tube battery radios for example.


--
Charles MacDonald Stittsville Ontario
cm...@zeusprune.ca Just Beyond the Fringe
http://users.trytel.com/~cmacd/tubes.html
No Microsoft Products were used in sending this e-mail.

[David Forbes]

I did that to build B batteries for my BC-611 WWII walkie-talkies. Fit
in the original battery wrapper, too. But I had to solder them together.

I must have been 5 years old the first and last time I snapped two 9V
batteries head-to-head; good thing my father was watching and told me
that it was not a good idea.

--
David Forbes, Tucson AZ

[Adam Jacobs]

I think that I've probably separated a few 9v that kids snapped together
as well. They just look so doggone tempting.

http://boards.straightdope.com/sdmb/showthread.php?t=304704

-Adam

[Jonathan Peakall]

I did this several times as a kid and never did get them to set on fire,
even when sitting in a puddle of gasoline. :-p I have had a couple of cases
split, but only just, nothing dramatic at all. Not saying it couldn't, just
what happened when I tried it.

Jonathan

>> I must have been 5 years old the first and last time I snapped two 9V
>> batteries head-to-head; good thing my father was watching and told me
>> that it was not a good idea.
>>
>

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[dr pepper]

I'd rather have an inverter than go and buy a box of pp3's at 5 quid
each.

> > For more options, visithttps://groups.google.com/groups/opt_out.- Hide quoted text -

[Charles MacDonald]

On 12-08-13 01:12 AM, dr pepper wrote:
> I'd rather have an inverter than go and buy a box of pp3's at 5 quid
> each.

In North America we have "dollar stores" where one finds Chinese
batteries. Not as good as a Duracell, but Ok for a low drain application
like a radio B+ Supply. even the "Heavy Duty" (carbon-zinc) are
probably just a powerful as the original Radio B batteries

Yes it would not likely be economical for a project that can tap into a
hydro outlet, but is potentally safer for breadboarding (No Grounds) or
handy for a project that is used on a portable basis. The current draw
of a battery radio tube is lily less than a nixie ever thought of using..

[andybiker]

Other advantages of the PP3 trick are that there's no on-off switch needed and no inverter causing harmonics through the long and medium wavebands. Rather important that last one. Yes you can screen the inverter or even use a lossy sinewave oscillator but nothing is as simple and EMC-quiet as the stack-o-pp3s.

 

I've used it myself and it works well!

 

Andrew.

[andybiker]

PS,

I've been tempted to use a stack of 2032s in a 'Smarties' tube.

At one UKpound for about 8 (24v worth) then 4 pounds would make a small 96v battery.

Andrew.

[Adam Jacobs]

That's a good idea, especially if you can get them for cheap. I think the 2032 might even have a higher maximum current draw than the 9v. (Probably a lot less total power, though). Do they make lithium 2032's? I guess that would spoil the point of "cheap", though.

How about silver oxide 357 cells? Those are dirt cheap and very tiny (although only 1.55v instead of 3v).

-Adam

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[David Forbes]

On 8/14/12 8:17 AM, Adam Jacobs wrote:
> That's a good idea, especially if you can get them for cheap. I think
> the 2032 might even have a higher maximum current draw than the 9v.
> (Probably a lot less total power, though). Do they make lithium 2032's?
> I guess that would spoil the point of "cheap", though.
>
> How about silver oxide 357 cells? Those are dirt cheap and very tiny
> (although only 1.55v instead of 3v).
>
> -Adam

Adam,

Lithium 2032s don't make many milliamperes - alkaline 9V batteries are
better at that. Also, all 2032s are lithium - there is no alkaline 2032.

The reason that alkaline 9V batteries are able to make a lot of power is
that they're full of cylindrical cells. The flat coin cells don't have
much surface area, whereas the cylindrical cells are rolled, so they
have a lot of area. Surface area makes power.

I learned all this while looking for batteries capable of running a
Nixie watch, ten years ago.

[Adam Jacobs]

Thanks for the education, David!

-Adam