leading to efficient transfer over as much of a kilometer of Cat5 cable. We’re guessing it’s not quite audiophile quality, but it’s useful to know that a current loop can be just as useful ...

Current loop converters receive signal inputs from devices such as sensors and produce analog outputs in the milliamp (mA) range. Typically, these outputs are standard current loops with ranges of 0 ...

A serial transmission method that uses a closed loop. It originated with teletype machines that transmitted 20 mA (milliamperes) of current for a 1 bit and the absence of current for a 0 bit.

These devices, for obvious reasons, they are also known as two-wire devices. Figure 1. A loop powered device in a current loop. One of the most important types of current loops is the 4 - 20 mA loop.