公开(公告)号：US4855858A

公开(公告)日：1989-08-08

申请号：US142304

申请日：1987-12-29

申请人： Martin Boertzel ,  Reinhold Ludwig ,  Wilhelm Schmits ,  Ulrich Weiss

发明人： Martin Boertzel ,  Reinhold Ludwig ,  Wilhelm Schmits ,  Ulrich Weiss

IPC分类号： H02M3/28 ,  H02M3/337

CPC分类号： H02M3/3378

摘要： A regulator includes a switching transformer (TR) whose primary winding is divided into two halves through which current flows alternatingly via one respective switching transistor (Q1, Q2). The pulses on the secondary side of the transformer are rectified to attain the output voltage. The output voltage is controlled by pulse width modulated driver pulses for the two switching transistors. A protective circuit (12) with immediate effect terminates the currently applied driver pulse when the current flowing through the conductive switching transistor reaches a critical current value. A protective circuit (14) with delay effect prevents the generation of further driver pulses upon a further increased overload, this prevention being limited with respect to time. The protective system directly is controlled by the primary current of the power regulator.

摘要翻译： 调节器包括开关变压器（TR），其初级绕组被分成两半，电流通过该两个电路经由一个相应的开关晶体管（Q1，Q2）交替流动。 变压器次级侧的脉冲被整流以达到输出电压。 输出电压由两个开关晶体管的脉宽调制驱动器脉冲控制。 当流过导电开关晶体管的电流达到临界电流值时，具有即时效应的保护电路（12）终止当前施加的驱动脉冲。 具有延迟效果的保护电路（14）防止在进一步增加的过载时产生进一步的驱动器脉冲，这种防止在时间上受到限制。 保护系统直接由电源调节器的初级电流控制。