Every "free energy" invention in the last hundred years appears to be only an efficient "swing". We can create machines with any material at hand using Internet to research information whenever we like.

You can use the java circuit sim to view it. Scaling down and replication in progress.

$ 1 1.0E-8 20.712724888983452 30 120.0 50
c 250 169 330 169 0 1.5000000000000002E-8 -41.275110483177855
w 250 281 330 281 0
w 186 169 250 169 0
w 330 169 330 201 0
w 330 249 330 281 0
T 330 201 394 249 2 2.5E-4 15.0 6.0456834336098035 0.43944878098199147 0.5
187 250 169 250 281 0 1.0 1.0E9 1000.0 1.0
v 186 281 186 233 0 0 40.0 1000.0 0.0 0.0 0.5
d 186 201 186 169 1 0.805904783
r 186 233 186 201 0 100.0
r 186 281 250 281 0 50.0
w 394 169 394 201 0
c 394 169 458 169 0 3.5E-11 11819.529963250323
r 522 169 522 217 0 5000000.0
T 458 169 522 217 0 0.1 55.0 -0.43944878098198437 0.008026794516765835 0.99
w 458 217 458 233 0
T 458 233 522 281 0 0.1 55.0 -0.4394487809819843 0.008026794516765853 0.99
r 522 233 522 281 0 5000000.0
r 394 249 394 281 0 100.0
w 394 281 458 281 0
x 56 412 188 415 0 10 Slowly decrease C1 to 5,1n
x 302 145 322 149 0 15 C1
x 65 40 196 46 0 24 Pulsed RLC
x 55 434 439 437 0 10 If you make something useful with it, please share with the rest of us. 10.27.10
o 6 64 1 43 640.0 9.765625E-5 0 -1
o 6 64 0 35 2560.0 25.6 0 -1
o 12 64 0 35 40960.0 0.8 1 -1
o 13 64 1 35 640.0 9.765625E-5 2 -1
o 17 64 0 35 81920.0 0.05 3 -1

Can you make a video, I don't understand a java script sim.

Follow this link and a Java applet should pop up, http://www.falstad.com/circuit/

After the circuit simulator pops up, then select "File" in the upper left hand of the window which says "Circuit Simulator v1.5m" and select "Import" from the drop down menu.  Next, copy and paste the code in the first post of this thread to the text box and select the "Import Button".  You should now see a simulation of this Pulsed RLC circuit.  I circled "File" and the "Import Button" in red to give you a reference point.

GB