Crystal Cell Research

[drodenbe]

here are the types of coils I am using for the joule thief circuit.  They are line input filter chokes.  I get them out of old tv sets and power supplies.

David

[4Tesla]

I've done some research on TSP/90.  Red Devil's version isn't pure Sodium Metasilicate.  It is Sodium Metasilicate Pentahydrate.  This is known to prevent corrosion on metal. 

[plengo]

I've done some research on TSP/90.  Red Devil's version isn't pure Sodium Metasilicate.  It is Sodium Metasilicate Pentahydrate.  This is known to prevent corrosion on metal. 

I was able to buy that PURE at ebay once.

[plengo]

I almost forgot to share undeniable evidence in favor of a non corrosive cell (at least that's how I see it, if someone knows more, PLEASE, bring arguments that will clarify my mistake).


I took one of my one-cell, casted, into the freezer and let it there for a few hours. Before that the voltage under 100 ohm load was around 7.6 mv or so.


After removing from the freezer I measure its temperature and it was below 10 Celsius degrees (-11 to be exact) and the running voltage across the 100 ohm resistor was .2 mv and slowly went to .5 mv (-10 Celcius) and to 1mv (-3 Celcius) and to 2 and to 3mv and still growing, last measure was 7.83 mv and growing.


Moral of the story: I believe that at below water freezing point there would be no corrosion possible since water would be , obviously, frozen prohibiting ion flow. No ion flow, no galvanic reaction or REDOX. It is possible to have corrosion (oxidation for example) but not having electrical current flow as a byproduct just like a regular battery would.


A capacitor I would think would be still discharging under this low temperature but it is a capacitor and not a chemical reaction of sorts.


Anyone to give some input?


Fausto.

[profitis]

your on the right track plengo but freezing is definitely not the way to eliminate possibility of corrosion.corrosion will happen even close to zero kelvin so long as air-moisture and o2 is available.one way to check for zero corrosion is to do the stepdown-spillover test that I did in karpen thread and it must be done rapidly.the other way is to get spontaneous REVERSE-POTENTIALS as I showed in other thread.you are absolute correct,we want the electrochemical voltage potential,not the corrosion.check out what happens in a photoelectrochemical system,you get eg, the iodine redox-system going like this at one electrode I2 + 2e- = 2 I- and reverse at other while light falls on one electrode.so the redox system is just acting like a see-through copper-sheet conductor.