Royer-type converter

One of the DC-DC converters invented by Dr. Royer. It is often confused with an inverter circuit for cold cathode tubes due to similar circuit diagrams, but that one is a collector-resonant circuit and operates on a different principle. This circuit uses a large transformer and saturates the core to perform phase inversion, which causes significant hysteresis loss and limits the oscillation frequency. Additionally, the pulsed high current generated during inversion results in large heat losses, leading to low conversion efficiency. On the other hand, compared to the latest DC-DC circuits, it has the advantage of performing DC-DC conversion with a simple circuit configuration.