发明名称 |
RESONANT IGNITOR CIRCUIT FOR LAMP WITH A VARIABLE OUTPUT CAPACITANCE BALLAST |
摘要 |
A resonant igniter circuit (11) employs a switch ignition branch and a resonant ignition branch. The switch ignition branch includes a pair of ignition switches (M1, M2) connected in series with a switch node (N1). The resonant ignition branch includes an ignition coil (L2) and an ignition transformer (T2). Ignition coil (L2) is connected in series with switch node (N1) and a primary winding of ignition transformer (T2). In operation, a serial inductance of ignition coil (L2) is at least fifty (50) times greater than a resonant inductance of ignition transformer (T2) and ignition transformer (T2) has an air-gapped core between a primary winding and a secondary winding to thereby facilitate an impedance of a power stage of the resonant ignition branch as seen from a source as always being inductive over an entire range of output capacitance.
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申请公布号 |
US2009072746(A1) |
申请公布日期 |
2009.03.19 |
申请号 |
US20050577509 |
申请日期 |
2005.10.19 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS, N.V. |
发明人 |
JANCZAK JERZY J.;DEURLOO OSCAR J. |
分类号 |
H05B41/288 |
主分类号 |
H05B41/288 |
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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