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From: Jim Thompson <To-Email-Use-The-Envelope-I...@On-My-Web-Site.com>
Newsgroups: sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
Subject: Re: ReRAM ??
Date: Sun, 18 Nov 2012 16:25:30 -0700
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On Sun, 18 Nov 2012 15:16:14 -0600, flipper <flip...@fish.net> wrote:

>On Sat, 17 Nov 2012 20:37:27 -0500, "P E Schoen" <p...@peschoen.com>
>wrote:
>
>>"flipper"  wrote in message 
>>news:aj7ga8dlgu11odmlcp39efba4662t5ka4a@4ax.com...
>>
>>> The 'elements' fit in the formed quadrants. Going clockwise you
>>> have in the lower left an inductor. Upper left is the resistor and
>>> upper right is the capacitor. The lower right is either 'missing'
>>> or a 'memsistor'.
>>
>>(view fixed font)
>>
>>                     voltage
>>                        ^
>>           resistor     |    capacitor
>>                        |
>>      current <---------+------------> charge
>>                        |
>>           inductor     |    ?????
>>                        v
>>                      flux
>>
>>It�s a "flux capacitor"!
>>http://en.wikipedia.org/wiki/DeLorean_time_machine
>>
>>It might also be modeled by a battery or a motor. Instead of *dissipating* 
>>power as voltage and current (resistor), it *stores* power in the form of 
>>flux and charge, either by chemical reaction or by rotational inertia.
>>
>>Paul 
>
>The units for a memristor is said to be Ohms. It dissipates just like
>a resistor. This has been used to argue it's not a new fundamental
>device since, it is claimed, a new fundamental device would require a
>new unit of measure. I'm not saying that's 'true', just that it's an
>argument made. Note, however, that they're both a ratio of (in
>generalized terms) 'quantity vs potential' with the difference being
>one is the differential of the other. e.g. dq-idt. It might be better
>to call the memristor unit Rt, or OhmT, to accommodate the 'memory'
>function.
>
>Or, put another way, it strikes me that saying 'ohms' for a memristor
>is akin to noting the volt and current of an inductor or capacitor at
>a specific moment in time. It's valid for that moment but is different
>at others and the same goes for the memristor's 'Ohms'. It changes
>over time, depending on flux and charge, so Ohms is an insufficient
>measure of it's overall, time variant, characteristic.
>
>A battery is not a passive device and a motor is not fundamental as it
>can be modeled by fundamental devices.
>
>Someone mentioned the diagonal. Yes, the inductor-capacitor diagonal
>are energy storage elements. The resistor-memristor diagonal are
>dissipative elements.

From considerable searching I conclude that the ReRAM is something
your door-to-door sweeper salesman might be hawking.  Lots of claims.
Little do.  Those who _were_ going to do non-volatile RAM with it are
"delaying" entry into the market for several years.

Even ran across a thesis and several papers where the "demonstrated"
Spice model had dangling nodes ;-)
		
                                        ...Jim Thompson
-- 
| James E.Thompson, CTO                            |    mens     |
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