Power Supply Basics

Remote Sense – Common Mistakes & Remedies [part 5]

Posted by Dulcie on July 5, 2013
Posted in: Power Supply Basics

Why a switch or fuse shouldn’t be used on the output wires

On occasion, a switch or fuse may be installed in series with one or both output wires as an added safety mechanism. However, this can cause a serious problem if the remote sense lines remain connected to the load.


Because if the output cable switch or fuse opens, current will flow in the sense lines and cause the internal Rsense resistors to burn up.

System debugging can cause similar problems; for example, where the power and sense cables are located on separate connectors and if by error, only the power cable connector is disconnected.

To read more about how to use the remote sense, please visit: www.emea.lambda.tdk.com/uk/faq

In the meantime, if you have a question you’d like to ask TDK-Lambda, please feel free to use the online FAQ form and we’ll get back to you with an answer to your question as soon as possible.