| 摘要 |
<p>The device has main switching units (UC1,UC2) which are connected to voltage lines and equipped with two main switches (K1,K2). A third main switch (K3) is connected between main switching point and third voltage line. The capacitors (CR1-CR3) are connected between main switching point and voltage lines. The auxiliary switching units (UCX1,UCX2) are connected between voltage lines and auxiliary switching points (CX1,CX2). A transformer (N1,N2) is equipped with winding provided with two free ends connected to common point and auxiliary switching points. An independent claim is included for uninterruptible power supply.</p> |
