发明名称 |
Starterless low-voltage fluorescent-lamp circuit arrangements |
摘要 |
A starterless circuit arrangement for the ignition and the operation of one or a number of series connected, low voltage fluorescent lamps which are connected with a stray field transformer coupled with a voltage source. The stray field transformer produces the no-load voltage needed for firing the lamps and possesses heating coils which are connected with the electrodes of the lamps. A cold conductor having markedly positive resistance characteristic is connected in parallel with at least part of the secondary winding of the stray field transformer in order to maintain the voltage applied to the lamp(s) at a value beneath the firing or ignition voltage for such length of time until the electrodes of the lamps are pre-heated.
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申请公布号 |
US3975660(A) |
申请公布日期 |
1976.08.17 |
申请号 |
US19750556535 |
申请日期 |
1975.03.27 |
申请人 |
F. KNOBEL ELEKTRO-APPARATEBAU AG |
发明人 |
KNOBEL, FRITZ;MEILI, ERNST |
分类号 |
H05B41/232;(IPC1-7):H05B41/23 |
主分类号 |
H05B41/232 |
代理机构 |
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