公开(公告)号：EP0239420A1

公开(公告)日：1987-09-30

申请号：EP87302692.6

申请日：1987-03-27

申请人： THOMAS INDUSTRIES INC.

发明人： Dean, Thomas E. ,  Henrich, William H. ,  Fischer, David M. ,  Stratton, Lawrence J.

IPC分类号： H05B41/24

CPC分类号： H05B41/2856 ,  H05B41/2858

摘要： An electronic frequency inverter circuit receives input electrical power at a lower frequency and energizes a load circuit (35) including gaseous discharge lamps (36,37) in a range of higher frequencies. First and second semiconductors (30,31) are operated alternately by a logic circuit (40) in current mode control such that the switches operate at the higher frequency range and the frequency of current in the load circuit varies as the magnitude of said source voltage varies. The load circuit has an impedance (38) which varies with frequency such that the peak amplitude of the load current remains substantially constant despite variations in the magnitude of said source voltage to achieve a desirable crest factor for the lamp current.

摘要翻译： 电子频率逆变器电路以较低频率接收输入电力，并且在包括较高频率的范围内的包括气体放电灯（36,37）的负载电路（35）通电。 第一和第二半导体（30,31）在电流模式控制下由逻辑电路（40）交替操作，使得开关在较高频率范围内工作，并且负载电路中的电流频率随着所述源极电压的大小而变化 变化。 负载电路具有随频率变化的阻抗（38），使得尽管变化了所述源极电压的幅度，但是为了实现灯电流的理想波峰因数，负载电流的峰值振幅保持基本恒定。

公开(公告)号：EP0239420B1

公开(公告)日：1992-01-02

申请号：EP87302692.6

申请日：1987-03-27

申请人： THOMAS INDUSTRIES INC.

发明人： Dean, Thomas E. ,  Henrich, William H. ,  Fischer, David M. ,  Stratton, Lawrence J.

IPC分类号： H05B41/24

CPC分类号： H05B41/2856 ,  H05B41/2858