发明名称 |
Micro-controller-operated high intensity discharge lamp ballast system and method |
摘要 |
The present invention is related to a micro-controller-operated high intensity discharge lamp ballast system. This system comprises the following elements: a boost pre-regulator means to convert a DC voltage into a high voltage DC bus to facilitate proper lamp power regulation, an inverter means to convert the high voltage DC bus into a high frequency FM modulated square wave voltage, a lamp matching network and filter means to convert the high frequency FM modulated square wave voltage into a high frequency FM modulated current facilitating the proper lamp power regulation, a lamp current and voltage sensing means to sense a lamp voltage and a lamp current across the high intensity discharge lamp and to feed the lamp voltage and lamp current into a micro-controller means adapted to facilitate proper functioning of the high intensity discharge lamp ballast system by means of sending a predetermined set of commands provided to monitor and control all elements of this system. The micro-controller means is adapted to control the lamp power by means of sending control signals to the boost pre-regulator means adapted to adjust the high voltage DC bus. The micro-controller means is also adapted to send drive signals to the inverter means to generate a high frequency FM modulated gating and shaping of the inverter means provided to obtain a stable operation of the high intensity discharge lamp at high frequencies and to eliminate acoustical resonance.
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申请公布号 |
US6072283(A) |
申请公布日期 |
2000.06.06 |
申请号 |
US19970805116 |
申请日期 |
1997.02.24 |
申请人 |
TRANSFORMATEURS TRANSFAB INC. |
发明人 |
HEDREI, GEORGE C.;ST-GERMAIN, NICOLAS |
分类号 |
H05B41/288;H05B41/292;(IPC1-7):G05F1/00 |
主分类号 |
H05B41/288 |
代理机构 |
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地址 |
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