Voltage adaptor for AC-DC power supply modules

Patent No. 9,077,239

Issued: July 7, 2015
Filed: March 8, 2013
Term Extension: 197 days

Inventors: Santini; John (Columbia, NJ), Hansen; Thomas A. (Long Valley, NJ), Mulcahy; Gary (Flanders, NJ)
Assignee: Transistor Devices, Inc. (Hackettstown, NJ)


A circuit for connecting lower AC voltage-rated AC-DC power supplies with higher voltage power sources. A power line matching transformer connecting the source to the power supplies needs only to support the self-dissipation and output current mismatch between supplies. The circuit can also protect the line matching transformer from overheating in various fault scenarios.


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