| 摘要 |
A transformer is provided to drive a number of lighting devices in a conduction circuit constituting one closed loop. In a transformer, more than two I type cores are arranged in parallel, in a constant gap. A C type core is arranged on a parallel plane of the I type core vertically, and convex parts of both ends are connected to both ends of the I type core. A primary winding(60) is installed in each I type core through a bobbin(20), and a secondary winding(50) is installed adjacently to both sides of the primary winding through a bobbin, and the secondary part has at least four output parts.
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