Selfrunning cold electricity circuit from Dr.Stiffler

[Magnethos]

Thank you very much, clear explanation.
Happy Christmas Dr.

[MarkSnoswell]

A new video of the new software that controls the measurement protocols.

The video shows an ESEC(1) going OU well past the margin of error. Test stopped at 180%.

ESEC(1)'s go to 200% without problem.

Dr.S.

http://www.youtube.com/watch?v=vd4h6oVtGj4

ESEC Naming:

ESEC(1) OU>1<3
ESEC(2) => ESEC(3) OU>2<4
ESEC(6) OU =>6
ESEC(10) OU > 10

I have some recent experience with these large "supercapacitors". You can not assume that the capacitance is constant under dynamic conditions. The capacitors must be characterized to determine their real performance under the conditions you are using. When you do this you see that a simple model approximation is that of two capacitors -- one with a fast response and one with a very long response time. In the time frame of the measurements shown the real capacitance will be considerably lower than the claimed 3 F.

I have observed leakage current of 1ma @16V in very similar capacitors. If you take this into account and let the capacitor stand for 15 min or so after it has been disconnected from the experiment you can get a far more accurate estimate of the power accumulated.

[hartiberlin]

What about building 2 ESECs and let them charge each other,
so no power supply is needed ?

This should be easily to demonstrate with a few Relays which toggle
back and forth.

This way a selfrunning system should be doable without the need of a power
supply or any other input power system.

Regards, Stefan.

[Kator01]

Hello MarkSnoswell,

very good point. It is definitely my experience when I was using 33 000 My Farad with  fast puls-charge-proccess. It is much more difficult with supercaps since part of the energy-inflow is consumed up in dielectric-polarisation of the vast surface of the supercap. This feature was explained in one of the papers way back in 2000 when I bought the first supercap for some experiments.
This very property is also responsible for a seemingly faster charge-up-behaviour shortly after a discharge because this dielectric-conditioning-energy is released time-delayed.

@all :

can someone help me with a supplier of this MPSA06-Transistor.I bought 100 of them here in munich from a professional supplier. There is not one piece which has a hfe > 130. They are very well produced and hfe varies in the range of 120 to 130 only. Too good to be true.

Second question is this : I have two digi-meters and each measures a different hfe-value. e.g. one shows hfe 100 the other hfe 120 for the same transistor.

Is there a standard-method of this hfe-measurement ? I do not trust these meters after this experience.

best Regards

Kator01



.

[hartiberlin]

I have some recent experience with these large "supercapacitors". You can not assume that the capacitance is constant under dynamic conditions. The capacitors must be characterized to determine their real performance under the conditions you are using. When you do this you see that a simple model approximation is that of two capacitors -- one with a fast response and one with a very long response time. In the time frame of the measurements shown the real capacitance will be considerably lower than the claimed 3 F.

I have observed leakage current of 1ma @16V in very similar capacitors. If you take this into account and let the capacitor stand for 15 min or so after it has been disconnected from the experiment you can get a far more accurate estimate of the power accumulated.

Hi Mark,
so you think this 3 Farad cap could have something like a "surface charge",
which is not a real charge, so the accumulated energy is not the real Joule value ?

Do you have a link to a paper describing this effect ?

Would it be better to use then only a stack of parallel foil capacitors or what capacitors would be best ?

I guess the final solution would be to see, if 2 ESECs could be switched back and
forth and keep on running and charging up each other and drop in voltage.
If this will result in a selfrunning system, the final proof will be done.

Regards, Stefan.