发明名称 |
FAILING LAMP MONITORING AND DEACTIVATING CIRCUIT |
摘要 |
<p>A discharge lamp monitoring and deactivating circuit includes a normally closed switch in series with the discharge lamp and its ballast and a detector circuit connected across the lamp to monitor lamp operating voltage. The detector circuit includes capacitor which is charged and discharged through separate paths so that a lamp electrical waveform change waveform can be detected, resulting in a net charge. The charge is used to open the switch after a time delay which is only manually resetable.</p> |
申请公布号 |
CA1273051(A) |
申请公布日期 |
1990.08.21 |
申请号 |
CA19870547512 |
申请日期 |
1987.09.22 |
申请人 |
HUBBELL INCORPORATED |
发明人 |
NUCKOLLS, JOE A.;FLORY, ISAAC L., IV |
分类号 |
H05B41/16;H02H3/50;H05B37/03;(IPC1-7):H05B37/00 |
主分类号 |
H05B41/16 |
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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