| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the capacity of a capacitor that becomes a pseudo power supply at the time of starting when the charging of a battery is insufficient and so on, related to a power circuit of an automobile. <P>SOLUTION: Two coils L1, L2 are arranged to an AC generator 1, and a gap between both the coils is grounded. Diodes D2, D3 each making a positive voltage pass toward a charging terminal 2b are arranged at voltage terminals of the coils, and driving thyristors SCR2, 3 of a lamp 6 that is driven with a negative voltage are connected to the voltage terminals. Since an output created by a positive voltage waveform of a full-wave rectifying state is obtained, and since a gap between the waves is narrowed to almost a half with respect to the one that uses a positive voltage waveform of a half-wave rectifying state, a discharging time for a capacitor is shortened when the pseudo power supply capacitor is arranged. A high charging voltage of the capacitor is also secured, sufficient power can be fed to a positive voltage drive load even by generation generated at a low-rotational speed at a start by kicking, and a negative voltage drive load can be concurrently driven, too. As a result, when, for example, the pseudo power supply capacitor is arranged to a small-sized motorcycle, which is started by kicking when a battery voltage is insufficient, as a battery alternative, the discharging time for the capacitor is shortened, the high charging voltage of the capacitor is secured, and the sufficient power can be fed to the positive voltage drive load even by the generation generated at the low-rotational speed at the start by the kicking. When a lamp is used as the negative voltage drive load, flickering is prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
