| 摘要 |
PURPOSE:To use a no-break power source of a small power source capacity, and to make a system inexpensive by backing up only (m) sets of (n) sets of power amplifiers which are operated in parallel, by the no-break power source. CONSTITUTION:In order to obtain a prescribed output PO, (n) sets of power smplifiers 31-3n are operated in parallel. (m) sets of power amplifiers 31-3m among them are backed up by an uninterruptive power source 8'. Also, this system is provided with power amplifier use power sources 61-6n corresponding by one-to-one to the power amplifiers 31-3n, and usually, by supplying the power from these power sources 61-6n, (n) sets of power amplifiers are operated, and the prescribed output PO is obtained. At the time of a service interruption, the power amplifier use power sources 61-6n are not operated, a DC voltage is supplied directly to (m) sets of power amplifiers 31-3m from the uninterruptive power source 8' constituted of a combination of a battery and a DC power source, and only (m) sets of power amplifiers are operated. |
