Load compensating gain control for a series resonant inverter.

摘要

A series resonant inverter is controlled (22-30) to maintain a substantially constant gain and a substantially constant bandwidth, thereby ensuring stable operation under all operating conditions. A load compensating gain control circuit (30) generates a unique gain or attenuation factor for each unique set of output load conditions. To maintain constant gain, inverter gain for each set of operating conditions is multiplied by the corresponding gain or attenuation factor. Bandwidth is increased (or decreased) and maintained constant to ensure stable operation.