Hey guys, I linked to this thread from my previous controller idea.
In my research about Nitinol today, I discovered that it would be rather easy for me to implement a very interesting 510 mod device
Assuming one is using a Nitinol wire, one can precisely control the temperature of said coil of wire with a circuit i've crafted up and have tested before in a slightly different application. I'd love to give details, but it is my wish to make a bit of profit from this idea if it proves to be as revolutionary as I think it will...
and that means I want to take every precaution I can to avoid the "ATTACK OF THE CLONES"
I don't intend on this making me rich. I'd likely rather team up with someone eventually who is already making mods and have them machine out a thing to the requisite dimensioning required, then put it all together.
Now then, onto the juicy part. Nitinol wires have interesting properties. Assuming that Nitinol wire of a known (or close to known resistance) is used, a circuit can be built to interface with the nitinol and provide temperature control with no other inputs or outputs besides Voltage in, a setting on a small knob, and connections to the coil out.
What this means, is that I have a design of a circuit which can set and maintain the temperature of a nitinol/kanthal E cig coil IN ANY MOD PROVIDED (if resistance requirements are met) to any desirable temperature (with respect to the limitation presented by the resistance of the coil and the voltage provided by the battery which limits the current to a single known value ohms law yadda yadda P = I^2*R
I will need to do some experiments on this before I am comfortable releasing it, however the current design goals are as follows.
1. +/- 5*C accuracy temperature control on a single coil of roughly 0.5 ohms resistance.
(We are using a Sub Ohm Coil here for numerous reasons, One being that it makes it easy for the current controller to operate the load as desired. That is, you can get away with a thicker coil that allows more Wattage in your cottage, but because the circuit itself will be regulating current, the power draw from the battery itself will be limited to a known value and thus the battery will not be overdrawn.)
2. As stated above, maximum current draw of 10 amps or so, which will then be lowered and raised in order to maintain said constant temperature.
3- input supply range, 10 volts to 3 volts with no change to output behavior.
4- Total circuit size, 1.5 inches long, 3/4 inch diameter steel tube with 510 connectors in, out, compatable with all mechanical mods including 2 battery, 1 battery, box, etc. Heatsinking done to external shell.
WHAT I HOPE TO ACCOMPLISH WITH DOING THIS:
When a normal E-cig is operated, the coil glows bright red, and presently we are using voltage and resistance modifications to make our Kanthal/Nitinol behave at a good temperature... kind of.
However, I think that this would allow an E cigarette to sacrifice some "Traditional" Power efficiency, in the sense that the circuit involved to regulate current will effectively put out the exact right amount of power to keep coil temperature up. In this way, you should* still be saving energy because you are not overheating your wire.
Not only will this save coil lifetime, at least it should, but it also should save energy and battery life.
If you guys want me to try my hand at doing this, I will. I am interested in the project and willing. What I really need is some strong voices out there who might be willing to recieve and "Beta test" my idea for me once I get a crude ish version worked out. Likely what this will entail is a cheapy plastic box with an aluminum heatsink that screws onto a mod and does its thing, with a glitzy final production version coming later if it is liked.
No, I will not share my schematic.
-1KAM-
OLD THREAD HERE:::: http://www.e-cigarette-forum.com/fo...kams-current-regulation-mod-any-interest.html
In my research about Nitinol today, I discovered that it would be rather easy for me to implement a very interesting 510 mod device
Assuming one is using a Nitinol wire, one can precisely control the temperature of said coil of wire with a circuit i've crafted up and have tested before in a slightly different application. I'd love to give details, but it is my wish to make a bit of profit from this idea if it proves to be as revolutionary as I think it will...
and that means I want to take every precaution I can to avoid the "ATTACK OF THE CLONES"
I don't intend on this making me rich. I'd likely rather team up with someone eventually who is already making mods and have them machine out a thing to the requisite dimensioning required, then put it all together.
Now then, onto the juicy part. Nitinol wires have interesting properties. Assuming that Nitinol wire of a known (or close to known resistance) is used, a circuit can be built to interface with the nitinol and provide temperature control with no other inputs or outputs besides Voltage in, a setting on a small knob, and connections to the coil out.
What this means, is that I have a design of a circuit which can set and maintain the temperature of a nitinol/kanthal E cig coil IN ANY MOD PROVIDED (if resistance requirements are met) to any desirable temperature (with respect to the limitation presented by the resistance of the coil and the voltage provided by the battery which limits the current to a single known value ohms law yadda yadda P = I^2*R
I will need to do some experiments on this before I am comfortable releasing it, however the current design goals are as follows.
1. +/- 5*C accuracy temperature control on a single coil of roughly 0.5 ohms resistance.
(We are using a Sub Ohm Coil here for numerous reasons, One being that it makes it easy for the current controller to operate the load as desired. That is, you can get away with a thicker coil that allows more Wattage in your cottage, but because the circuit itself will be regulating current, the power draw from the battery itself will be limited to a known value and thus the battery will not be overdrawn.)
2. As stated above, maximum current draw of 10 amps or so, which will then be lowered and raised in order to maintain said constant temperature.
3- input supply range, 10 volts to 3 volts with no change to output behavior.
4- Total circuit size, 1.5 inches long, 3/4 inch diameter steel tube with 510 connectors in, out, compatable with all mechanical mods including 2 battery, 1 battery, box, etc. Heatsinking done to external shell.
WHAT I HOPE TO ACCOMPLISH WITH DOING THIS:
When a normal E-cig is operated, the coil glows bright red, and presently we are using voltage and resistance modifications to make our Kanthal/Nitinol behave at a good temperature... kind of.
However, I think that this would allow an E cigarette to sacrifice some "Traditional" Power efficiency, in the sense that the circuit involved to regulate current will effectively put out the exact right amount of power to keep coil temperature up. In this way, you should* still be saving energy because you are not overheating your wire.
Not only will this save coil lifetime, at least it should, but it also should save energy and battery life.
If you guys want me to try my hand at doing this, I will. I am interested in the project and willing. What I really need is some strong voices out there who might be willing to recieve and "Beta test" my idea for me once I get a crude ish version worked out. Likely what this will entail is a cheapy plastic box with an aluminum heatsink that screws onto a mod and does its thing, with a glitzy final production version coming later if it is liked.
No, I will not share my schematic.
-1KAM-
OLD THREAD HERE:::: http://www.e-cigarette-forum.com/fo...kams-current-regulation-mod-any-interest.html
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, didn't allude to that very well, but If it does it, it does it. 
