Yes, it's my interpretation, but I think most other editors would agree with it - a lengthy page detailing your research, using images hosted on Wikipedia servers, clearly fits the criteria of "extensive writings and material on topics having virtually no chance whatsoever of being directly useful to the project, its community, or an encyclopedia article" - I've nothing against the content itself, it's just not directly useful to any specific articles in the Wikipedia project, so you shouldn't be hosting it on Wikipedia servers. Wikipedia is not your web host. -- McGeddon ( talk) 16:48, 1 May 2010 (UTC)
It is not true that a toroid core can be saturated by a current proportional to the strength of an external magnetic field: in a simple case when there is no external field, the core is not saturated without any current. Also, a voltage induced (EMF) in a coil on the core depends on the external field; just the voltage dependence consumes from the current source the energy, which the magnet gets due to the interaction. Nothing odd happens. However, usually such a circuit has significant losses, which camouflage the effect of the EMF, so it can be overlooked if measurements aren't precise enough.
Considering measurements of currents in pA range: a device for such a measurement can be done using cheap parts, I made one for computer measurements using cheapest ADC and opamps, getting sub-pA precision. However, it required good isolation (critical connections outside PCB), screening (or it detects electric field changes), and good cables (a cable can generate charges when moved, due to temperature change, etc.). If you see a 10pA current from a diode, there are many effects to consider, e.g. electrochemical - due to oxidation of the semiconductor there, even a small diode has enough reserve for hundreds years...
Yes, it's my interpretation, but I think most other editors would agree with it - a lengthy page detailing your research, using images hosted on Wikipedia servers, clearly fits the criteria of "extensive writings and material on topics having virtually no chance whatsoever of being directly useful to the project, its community, or an encyclopedia article" - I've nothing against the content itself, it's just not directly useful to any specific articles in the Wikipedia project, so you shouldn't be hosting it on Wikipedia servers. Wikipedia is not your web host. -- McGeddon ( talk) 16:48, 1 May 2010 (UTC)
It is not true that a toroid core can be saturated by a current proportional to the strength of an external magnetic field: in a simple case when there is no external field, the core is not saturated without any current. Also, a voltage induced (EMF) in a coil on the core depends on the external field; just the voltage dependence consumes from the current source the energy, which the magnet gets due to the interaction. Nothing odd happens. However, usually such a circuit has significant losses, which camouflage the effect of the EMF, so it can be overlooked if measurements aren't precise enough.
Considering measurements of currents in pA range: a device for such a measurement can be done using cheap parts, I made one for computer measurements using cheapest ADC and opamps, getting sub-pA precision. However, it required good isolation (critical connections outside PCB), screening (or it detects electric field changes), and good cables (a cable can generate charges when moved, due to temperature change, etc.). If you see a 10pA current from a diode, there are many effects to consider, e.g. electrochemical - due to oxidation of the semiconductor there, even a small diode has enough reserve for hundreds years...