Can a simple 5V battery produce over 50V without a transformer? Try it yourself!
How to test:
Run the simulation.
Closed the swich to store energy in the inductor.
Open the switch and watch the capacitor voltage skyrocket!
What's happening?
The inductor stores energy in its magnetic field. When the switch opens, it forces the current through the diode into the capacitor, boosting the voltage far above 5V!
No magic. No free energy. Just physics!
Can you make it go even higher?