A new resonance transformer

Resonance systems have been used to provide transformer-like voltage stepup from a low voltage to a high voltage. However, all early systems have the disadvantage that the voltage gain in limited to the Q of the total circuit (including the load). This imposes a severe gain limit and leads to high line voltage regulation under changing load conditions when the gain is moderate. The circuit described here is a new circuit which overcomes most of these early problems. It provides a gain which is relatively insensitive to the load circuit and is mainly limited to the product of the Q of two resonant loops (i.e., the regulation of the circuit is similar to that of an iron-core transformer). Furthermore, several stages can be step or series connected to provide an unlimited potential gain. The circuit is thus a competitor of the iron-core transformer, and will be particularly attractive in very-high-voltage or high-frequency circuits where adequate insulation or hysteresis loss becomes a problem.