Board Thread:Questions and Answers/@comment-25358301-20160311175528/@comment-61.164.211.110-20160321144915

A different question from the usual "how do I use a filter/set up java" for once, yay. (I don't answer questions here as regularly as I used to)

You wouldn't be able to separate the two functions you want just by using the MFSU's Emit if Full function alone (or even an inverted Emitt if Partially Filled). As you know, MFSU's output RS signal on all sides when the conditions are met. Assuming you do actually have the need to keep the teleporter off by default instead of on (doesn't drain power unless it's actually teleporting something anyways), you can be clever with the following workaround solution:

Where the MFSU is charged, replace a wire with a detector cable. It will emit RS signal while the MFSU is charging, meaning the lamp would be on while the MFSU is not full. Just invert this signal and you'll have your desired "lamp on when fully charged" function that doesn't activate the teleporter doing so.

Set the MFSU behavior to none, and the rest of the wiring is trivial.