| 摘要 |
An improved structure of decorative LED lighting chain comprises a front plug, rear plug, an AC/DC converter consisting of 4, rectifying diodes, and at least one LED serial set, in case of multiple serial sets are used, a parallel connection is applied. The rectifying diodes are divided into 2 groups, with each group contains 2 diodes. The negative ends of the 2 rectifying diodes of the first group are connected in parallel, and their positive ends are connected with the positive and negative ends of the front and rear plugs respectively. As for the 2 rectifying diodes of the second group, their positive ends are connected together in parallel, and their negative ends are connected with the positive and negative ends of the front and rear plugs respectively. The said LED serial set is connected between the negative end of the rectifying diodes of the first group and the positive end of the rectifying diodes of the second group. By means of the aforesaid method, 4 rectifying diodes are divided into 2 groups and the LED serial set is set up between these 2 groups, this can help reducing the use of one wire, and contribute to simplified structure, improved visual effect, and reduced manufacturing cost. |
