BOOSTER POWER SUPPLY FOR ENGINE GENERATOR AND ITS CONTROLLING METHOD

A voltage booster for engine generator comprising an engine ignition apparatus of the full transistor igniter method capable of igniting the engine by the kick method. Between a voltage adjusting device receiving a start current from the kick-driven generator and an electronic device such as an ECU connected to the voltage adjusting device, there is connected in parallel an active boosting circuit performing boosting operation only during output of a low voltage of the voltage adjusting device upon engine start by kick and terminating the boosting operation when the stationary operation is set in after the engine start. A control method of the voltage booster is also disclosed.