| 摘要 |
The apparatus (21) has a set of switches (T1, T4) connected between switching input and output (S1, S4) of a switching unit. A second set of switches (T2, T3) is connected between the switching output and a signal modulated output (SM). A third set of switches (TX1, TX4) is connected between the switching input and the signal modulated output. The first set of switches controls to pass from switching state to another switching state while maintaining third set of switches in open position. The third set of switches is controlled to close during duration part of the former switching state. An independent claim is also included for an interruption-free power supply comprising a rectifier connected to a power supply input. |
