发明名称 |
Discharge lamp life and lamp lumen life-extender module, circuitry, and methodology |
摘要 |
A method of extending discharge lamp life includes slowing electrode deterioration by powering the discharge lamp so that a lamp arc current having a reduced crest factor results, either by retrofitting an existing discharge lamp system with a waveform conditioning module, by powering the discharge lamp with a ballast producing a squarewave-type waveform, or by slowing deterioration of an emissive coating on a discharge lamp electrode by such means as preheating the electrode prior to use in order to bond the emissive coating on the electrode. A discharge lamp system includes a discharge lamp and components operatively coupled to the discharge lamp for supplying a lamp arc current to the discharge lamp that has a reduced crest factor and controlled lamp watt loading, such as a ballast configured to supply a lamp arc current with a waveform that is substantially a squarewave or an existing ballast retrofitted with waveform conditioning circuitry that causes the lamp arc current to have a reduced crest factor. A module is provided for retrofit purposes in order to tune an existing ballast and discharge lamp so that the crest factor is reduced.
|
申请公布号 |
US5187411(A) |
申请公布日期 |
1993.02.16 |
申请号 |
US19910738252 |
申请日期 |
1991.07.30 |
申请人 |
SYSTEMS AND SERVICE INTERNATIONAL, INC. |
发明人 |
BOYD, DUDLEY G.;CHEN, NIAN |
分类号 |
H05B41/232;H05B41/36 |
主分类号 |
H05B41/232 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|