Framework for simple AC-to-DC conversion power supply, many output voltage points between 0.7V regulator diode chain.
Same circuit can be achieved with line mains voltage transformer down to 24V with high current, then voltage controlled rectified down with resistor in series (for example 3kW line with 240V*12.5A to 24V*125A transformer max).
Theoretically only the input/load determines max current/power, no over-current protection in the circuit itself, also dc-component removal from the input signal by the capacitor voltage-divider chain.
