Regarding a brushless motor control device and a control method, the phase voltage Vsu of any one phase of the three-phase brushless motor is detected by a sub-coil (Su) (6). A time interval between adjacent zero-cross points a1 and a2 thereof is measured....

A control circuit (20) configured to rectify an alternate voltage output from a power generator, thereby controlling charging of a battery (50) and lighting of a lamp (60), includes: a first switch (21); a second switch (23); and a third switch (25). The f...

A regulator comprises a rectifying circuit that rectifies an alternating current output from an output terminal of each phase of the three-phase alternating-current generator "101" and passes a charging current to the battery "B"; first to third semiconduc...

An engine control method includes: a step of determining whether or not a crank angle of the engine lies in a first section between a top dead center in a compression stroke and a first angle in a case where the number of revolutions of the engine is lower...

In a battery charger, the rectifier includes rectifying elements provided for respective three phases. The rectifier supplies, for the respective phases, currents for rectifying three-phase AC voltages so as to charge a battery. A voltage detector detects ...

The present invention provides a fuel cell optimum operating point tracking system capable of ensuring optimum operation of a fuel cell, by detecting the optimum operation voltage of the fuel cell taking not only temperature dependence of the output charac...

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 genera...