Re: Stupid polarized capacitor tricks

On Thu, 27 Sep 2007 12:32:40 +1200, Terry Given <my_name@xxxxxxxx>
wrote:

John Larkin wrote:
On Wed, 26 Sep 2007 15:37:43 -0700, "Joel Kolstad"
<JKolstad71HatesSpam@xxxxxxxxx> wrote:


I was reading a circuits book today that spent more time on the construction
and modeling of components than most do. When I came to the section on
regular old polarized electrolytic capacitors it occurred to me that you just
might be able to turn an electrolytic capacitor into one bit of non-volatile
memory by purposely applying the correct or reverse polarity to form or remove
the dielectric ("write"), and then test for this (by checking to see if the
cap behaves more like a cap or a short :-) ) later ("read").

Does anyone know if this is feasible? In my mind it would make electrolytic
caps sort the "dual" to core memory, which of course leave ferromagnetic
materials near one end or the other of their B-H curves for later recall.


Feasible, but write operations would be sort of slow.


---Joel



I think that high-K ceramic caps may have enough c-v hysteresis to be
able to store data... maybe even multiple bits per cap, like some
Flash memories.

Ceramic caps are certainly nonlinear enough to make parametric power
amplifiers, and high-voltage nonlinear shock lines.

John

and temperature sensors :)

---
And accelerometers, microphones, and dynamic pressure sensors.


--
JF
.

Relevant Pages

  • Re: Stupid polarized capacitor tricks
    ... When I came to the section on regular old polarized electrolytic capacitors it occurred to me that you just might be able to turn an electrolytic capacitor into one bit of non-volatile memory by purposely applying the correct or reverse polarity to form or remove the dielectric, and then test for this (by checking to see if the ... I think that high-K ceramic caps may have enough c-v hysteresis to be ... and high-voltage nonlinear shock lines. ...
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  • Re: Stupid polarized capacitor tricks
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  • Re: Stupid polarized capacitor tricks
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  • Re: Stupid polarized capacitor tricks
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