DC-DC CONVERTER CIRCUIT AND INDUCTIVE-LOAD DRIVING APPARATUS USING THE SAME

摘要

An inductive-load driving apparatus using DC-DC converter circuit wherein a capacitor is charged with the magnetic energy stored in a coil for a high voltage to be obtained. In the apparatus, a permanent magnet is used as the core of the coil to apply a bias in the opposite direction to the magnetic flux caused by the current flowing through the coil, so that the magnetic energy stored in the coil increases. As a result, an efficient charging is made possible using a small coil.