| 摘要 |
<p>PURPOSE: A lighting high power factor high power bulb power control device for micro adjustment is provided to implement a high power factor by preventing an influence on a phase angle of commercial power by composing most of a power circuit with resistors. CONSTITUTION: An AC filter unit(1) protects a circuit from a surge current or instantaneous overvoltage applied from power for supplying currents to a bulb. A power adjusting unit(2) is composed of a resistor adjusting and falling a voltage for an AC current inputted from the AC filter unit and a plurality of entity voltage adjusting units(2-1, 2-2, 2-n) composed of resistors bypassing the AC current. An AC/DC converting unit(3) is composed of a plurality of entity AC/DC converting units(3-1, 3-2, 3-n) inputting the AC current applied to each entity voltage adjusting unit by being connected with a wire of input power. A current adjusting unit(4) is composed of entity current adjusting units(4-1, 4-2, 4-n) limiting DC currents applied from the entity AC/DC converting units.</p> |
