AC and DC input power supply

Details AC and DC input power supply AC and DC input power supply

1999-05-17

2000-10-17

Sterrett, Jeffrey

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363142, H02M 5458

Patent

active

061341258

ABSTRACT:
An AC and DC input power supply includes an AC power supply circuit and an AC input for receiving a range of AC input voltages. A rectifier circuit is connected to the AC input. An isolation output transformer has first and second primary winding terminals and a low voltage winding section for connecting to a DC voltage input that is lower than the range of the DC voltage that is rectified from the range of AC input voltages. The rectifier circuit is connected to the first primary winding terminal of the isolation output transformer. A transistor is connected to the second primary winding terminal of the isolation output transformer. The DC power supply circuit includes a DC input that is selectably connectable between the first primary winding terminal when the voltage input to the DC input connector is a nominal DC voltage that is within the range of the DC bulk voltage and the low voltage winding section when the voltage input to the DC input is lower than the range of the DC bulk voltage.

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