Lighting device and voltage reduction method thereof

摘要

The disclosure provides a lighting device and a voltage reduction method thereof, wherein the lighting device comprises: an AC power supply generator for generating an AC power source to supply power to other accessories and circuits in the lighting device; m load components, every two adjacent load components forming one head common connection point and one end common connection point respectively for each load component from head to end alternatively; and (m−1) current balancing cells each respectively connected between one head common connection point or one end common connection point and one of two output terminals of the AC power supply generator; wherein the m load components comprise (m−n) low impedance load components therein. The present application can reduce the output voltage of the AC power supply generator with lower cost.

主权项

1. A lighting device, comprising:
an AC power supply generator for generating an AC power source so as to supply power to other accessories and circuits of the lighting device; m load components, wherein a first load component has one end electrically connected to the AC power supply generator and another end electrically connected to one end of a second load component at a first common connection point; an (i) th load component has one end electrically connected to one end of an (i−1)th load component at an (i−1)th common connection point and another end electrically connected to one end of an (i+1)th load component at an (i)th common connection point; an (m)th load component has one end electrically connected to one end of an adjacent (m−1)th load component at an (m−1)th common connection point and another end electrically connected to the AC power supply generator; and (m−1) current balancing cells each for balancing the current flowing through two of the load components connected thereto, wherein a first current balancing cell is electrically connected between the AC power supply generator and the first common connection point, an (i−1)th current balancing cell is electrically connected between the AC power supply generator and the (i−1)th common connection point, an (i)th current balancing cell is electrically connected between the AC power supply generator and the (i)th common connection point, and an (m−1)th current balancing cell is electrically connected between the AC power supply generator and the (m−1)th common connection point; wherein based on the polarities of the AC power supply generator, every two adjacent load components have opposite polarities and alternatively work in a positive cycle or a negative cycle of the AC power source; and the m load components comprise (m−n) low impedance load components therein to reduce the voltage output from the AC power supply generator, wherein m, n and i are positive integers, and m≧3, m>n≧1, m>i>1.