发明名称 |
An electrodeless high intensity discharge lamp. |
摘要 |
<p>A series resonant starting circuit for providing a starting voltage to a starting probe for initiating an arc discharge in an electrodeless HID lamp includes an electrically variable inductance. The HID lamp is of a type having an excitation coil situated around an arc tube containing an ionizable fill in which the arc discharge is ignited. The electrically variable inductance includes a magnetic core having a main winding wound thereon that is coupled in series with a resonant capacitance. A bias winding is also wound on the magnetic core. Either the bias winding is coupled in series with a bias inductor, or, alternatively, the main and bias windings are configured on the magnetic core as a cross-field inductor. A bias circuit supply provides dc or relatively low-frequency ac current to the bias winding in order to vary the permeability of the magnetic core, and hence the inductance of the main winding, thereby tuning the starting circuit. <IMAGE></p> |
申请公布号 |
EP0566310(A1) |
申请公布日期 |
1993.10.20 |
申请号 |
EP19930302754 |
申请日期 |
1993.04.07 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
ANDERSON, JOHN MELVIN;COCOMA, JOHN PAUL;FARRALL, GEORGE ALBERT;ROBERTS, VICTOR DAVID |
分类号 |
H05B41/24;H05B41/28;(IPC1-7):H05B41/29;H05B41/38 |
主分类号 |
H05B41/24 |
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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