| 摘要 |
<p>A power supply system is disclosed having two regulated power supply devices with outputs connected in parallel for redundant half-load operation. Each power supply device has a voltage regulator and a current regulator with outputs connected in parallel to a switching transistor which provides regulation. A discriminator and transfer switch in each power supply device compares sensed load currents in both the power supply devices and switches the power supply device from current regulation to voltage regulation or vice-versa. By use of the transfer switch and discriminator, an active, reaction-free load take over in the case of a failure of one of the power supply devices operating in a voltage regulation mode may be accomplished. The other power supply device is then switched from a current regulation mode to a voltage regulation mode so as to take over from the power supply device which has failed.</p> |
