US 12,467,955 B2
Methods and apparatus for resistive voltage sensing in an isolated power distribution unit
Michael Suchoff, Chapel Hill, NC (US)
Assigned to RARITAN AMERICAS, INC., Somerset, NJ (US)
Filed by RARITAN AMERICAS, INC., Somerset, NJ (US)
Filed on Jun. 19, 2024, as Appl. No. 18/747,814.
Application 18/747,814 is a continuation of application No. 17/643,588, filed on Dec. 9, 2021, granted, now 12,038,459.
Application 17/643,588 is a continuation of application No. 16/887,237, filed on May 29, 2020, abandoned.
Application 16/887,237 is a continuation of application No. 15/159,647, filed on May 19, 2016, abandoned.
Application 15/159,647 is a continuation of application No. 12/899,656, filed on Oct. 7, 2010, granted, now 9,482,698, issued on Nov. 1, 2016.
Prior Publication US 2024/0345136 A1, Oct. 17, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 15/04 (2006.01); G01R 19/00 (2006.01); G01R 19/165 (2006.01); G01R 31/42 (2006.01); H02H 9/04 (2006.01); H02H 9/06 (2006.01); H02J 3/00 (2006.01)
CPC G01R 15/04 (2013.01) [G01R 19/0084 (2013.01); G01R 19/16547 (2013.01); G01R 31/42 (2013.01); H02J 3/00 (2013.01); H02H 9/04 (2013.01); H02H 9/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a primary side circuit including one or more voltage nodes;
a secondary side circuit including at least one processing circuit; and
a resistor network having an input for receiving a first sensed voltage from a first of the one or more voltage nodes of the primary side circuit, traversing an isolation boundary between the primary side circuit and the secondary side circuit while adhering to a safety specification which includes a primary-secondary isolation requirement, and having an output for providing a first modified sensed voltage to the processing circuit,
wherein said resistor network does not span any isolation circuit, and includes a plurality of series-coupled resistors which are connected at one end to the first voltage node of the primary side circuit and connected at an opposite end to a junction node, and a shunt resistance coupled from the junction node to a reference potential, and
wherein the output providing the first modified sensed voltage to the processing circuit is at least one of taken from, and derived from, a voltage at the junction node.