ENERGY AMPLIFICATION

[Dave45]

If L1 used fine wire and L2 was a heavier gauge there would be a higher voltage bemf hitting L2 but the fine wire in L1 would limit the current through the whole system, and heat up.
This is why I took L1 out of the load loop.

[Dave45]

This part of the circuit is classic boost converter topology.
Sorry I was busy with work during the week and didnt have time to discuss the circuits.

[MarkE]

Dave, here are two drawings that show what happens with uncoupled inductors as you have drawn, and the case of a flyback where the two inductors are tightly coupled.  If your intention was to tightly couple L1 and L2, then if the dot orientations of the two coils were both on the left, you would have a flyback.  D1 and the right hand capacitor would bias the circuit but play no real role in carrying current.

[d3x0r]

Looks like the same conversation that was being had back in march... (search akula 80W, and find the beginning, search akula 30W as corrected a couple posts in... get real schematic)


Here's a really good resonant rise with storage into a cap and various ways to get the link back out.


There is no BEMF in the sense that the current reverses.  there is BEMF (that would be the resistance to the rise in current; a body at rest stays at rest) there is FEMF (a body in motion wants to stay in motion)... but none of that is a reversal...  but anway

Falstad sim
(as always, uncheck conventional current, that doesn't save in URL; also can adjust simulation time step up to 150us (15* faster) cause the build ups are a little slow) Also, make sure to click reset to see beginning... the link actually saves the voltage states current at the time of export... so this is already in progress.

(was going to say; forget LTSpice; it's good for an expert, but for playing around can update with live changes the falstad sim and immediately see results on meters etc... Falstad is a much better experimenter tool; and think he's fixed a few OU circuit issues)

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There are 4 distinct regions, the resonant coil, the light bulb load (damping across the resonant tank), high impedance loads can go across the diode since the voltage peeks against the diode each cycle... power can also be taken off the storage capacitor.... but not all; the more you depelte that capacitor the less power you have available... better to take the power in the other places and storage immense wattage in the resonant tank.

(based off of Ruslan's last device post; and basically the same circuit I was asking about why negative power doesn't work... except I couldn't build that sim to work... )

If the circuit is allowed to build power, when closing the switches on the loads, can get out more power than input for quite a while.
and the power across the resistor on the caps is a straight DC output at a flat level greater than the input pulse max.
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the difference in power from 1V in a capacitor at 100V vs 1000V is 100X; This circuit is also a fixed current charging of the cap (in pulses, but always the same amount every pulse) and it's 20KW stored at 3.58KW input... (built up to about 468V)

[forest]

d3x0r


You seem to be experienced in Falstad sim. can you simulate the simplest flyback circuit MarkE posted ?