Kapanadze and other FE discussion

[lancaIV]

Reality bites:
https://en.m.wikipedia.org/wiki/Exergy
https://en.m.wikipedia.org/wiki/Thermodynamic_limit
https://en.m.wikipedia.org/wiki/Johnson%E2%80%93Nyquist_noise
But there is not a need for total recapture: 51% recharge  efficiency gives the repowering force for a new cycle

[r2fpl]

If most of the energy returns to the source, what happens with this lost energy. There is no simple logic here. The energy is lost in the bulb but it could power the system, so how is it possible that the bulb works and "90%" returns to the source. There is a mistake in my reasoning.

[Hoppy]

There will be always losses in circuits so the returned energy will be always less then input.That small difference you have to add, replenish source.


How small are losses? It depends how efficient circuit is.

So; what proportion of the source supplied energy do you estimate is dissipated as heat loss in what you described as the 'hot' L2 bulb in the 'Zero' circuit?

BTW - Units of energy cannot be interchanged for units of power, current or voltage.

[Hoppy]

If most of the energy returns to the source, what happens with this lost energy. There is no simple logic here. The energy is lost in the bulb but it could power the system, so how is it possible that the bulb works and "90%" returns to the source. There is a mistake in my reasoning.

Yes, the 90% return to source logic is BS.

[Jeg]

Lets spark some fire.
Following image is from Q topology.
Yellow is across the input capacitor.
Reference for both the probes is common and it is the ground of battery,
Blue is across Czero.
All caps are 470uf/400V
Input to my push pull is 24Vdc.
Load=40 and 70 watts incadesent which anyway shines bright.
Czero almost 37 volts when charges and 12 when discharges. This is a 25 Volts difference.

Input current from battery looks steady 2A with or without the Q-feedback topology.

Normally i would expect that during return cycle, input voltage to be increased over 24volts. Or at least the input current to drop down even a litle. I;ll check if i have any errors in connections.