发明名称 |
Filment switch for a lamp ballast |
摘要 |
A filament switch for a rapid start fluorescent lamp disconnects or reduces through phase modulation the heating current to a plurality of lamp filaments to save power. The switch uses a trigger in series with a voltage sensitive element and an impedance element, the switch being responsive to the difference between a lamp starting voltage and a lamp sustaining voltage for determining when and for how long the filaments are heated.
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申请公布号 |
US5132595(A) |
申请公布日期 |
1992.07.21 |
申请号 |
US19900541609 |
申请日期 |
1990.06.21 |
申请人 |
MAGNETEK UNIVERSAL MFG. CO. |
发明人 |
KULKA, ROBERT A.;BAUER, FREDERICK P. |
分类号 |
H05B41/232 |
主分类号 |
H05B41/232 |
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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