发明名称 |
BALLAST FOR AT LEAST ONE GAS DISCHARGE LAMP AND METHOD FOR OPERATING SUCH A BALLAST |
摘要 |
<p>A ballast for a gas discharge lamp having an inverter. A DC voltage source feeds the ballast. A bridge circuit is arranged in parallel with the DC voltage source. The bridge circuit has first and second controllable switches. The midpoint of the bridge is connected to a load circuit having the gas discharge lamp. The gas discharge lamp has first and second electrodes. A control circuit controls the pulse duty factor of the first and second switches. The pulse duty factor is not equal to 50%. The control circuit controls the pulse duty factor such that the first and second electrodes are subjected to essentially the same thermal load on average.</p> |
申请公布号 |
EP1095543(A1) |
申请公布日期 |
2001.05.02 |
申请号 |
EP20000941880 |
申请日期 |
2000.04.19 |
申请人 |
PATENT-TREUHAND-GESELLSCHAFT FUER ELEKTRISCHE GLUEHLAMPEN MBH |
发明人 |
RAISER, FRANZ |
分类号 |
H05B41/24;H05B41/282;H05B41/298;H05B41/392;(IPC1-7):H05B41/298 |
主分类号 |
H05B41/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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