发明名称 |
Anti-cycling device for high pressure sodium lamps |
摘要 |
The invention disclosed here is an anti-cycling device for high-pressure sodium lamps. A current sensor continually monitors lamp current and outputs a low voltage signal to an amplifier. When lamp current increases, indicating a starting or recycling condition, the sensor's voltage output correspondingly increases, and the amplifier responds by amplifying such output and transmitting it to a second amplifier. The latter acts as a voltage comparator and compares the first amplifier's output with a threshold level. Each time the first amplifier's output exceeds the threshold, the second amplifier outputs a trigger signal. Such signal is counted over time, and if the number of counts reaches a certain number, the counter outputs a malfunction signal to a relay that cuts off power to the lamp. An easy-to-see LED simultaneously illuminates to indicate the cycling condition and the need for lamp maintenance.
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申请公布号 |
US5103137(A) |
申请公布日期 |
1992.04.07 |
申请号 |
US19900503394 |
申请日期 |
1990.04.02 |
申请人 |
MULTIPOINT CONTROL SYSTEMS, INC. |
发明人 |
BLAKE, FREDERICK H.;LONG, C. DAVID;COLLIN, ARTHUR G. |
分类号 |
H05B37/03;H05B41/04 |
主分类号 |
H05B37/03 |
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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