Control circuit for diode-or connected power supplies

Details Control circuit for diode-or connected power supplies Control circuit for diode-or connected power supplies

1985-12-30

1986-12-09

Wong, Peter S.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

323272, H02M 3335

Patent

active

046284338

ABSTRACT:
A control circuit which monitors the output voltage of multiple power supplies connected to each other in a diode-or arrangement. When one power supply provides a higher voltage than the others the control circuit causes the lower output power supplies to operate in a standby mode. The control circuit includes voltage dividers on both sides of the output diode of the power supplies. These voltage dividers provide indications of the voltage output of their associated power supply and the other power supplies. A voltage comparator monitors the output voltage of its associated power supply and the other diode-or connected power supplies as indicated by the voltage dividers. The voltage comparator to adjust the voltage output of the associated power supply to a level just below the high output power supply, thereby leaving it in a standby mode of operation. If the high output power supply provides a reduced level of output voltage the voltage comparator in the standby power supply causes that power supply to then supply power to the load without any interruption in supply of the power.

REFERENCES:
patent: 3824450 (1974-07-01), Johnson et al.
patent: 4194147 (1980-03-01), Payne et al.

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