The 4- to 20-mA current loop is ubiquitous in the world of controls in manufacturing plants. Discrete logic, microprocessors, and microcontrollers easily cover the digital portions of control schemes, ...
Two popular ways of measuring the loop gain T of a negative-feedback circuit are Middlebrook’s double-injection method [1] and Rosenstark’s open-circuit/short ...
RCD uplift. If you’ve ever tested a circuit and got higher readings than expected, chances are uplift was the reason. Here’s what RCD uplift is, why it matters, and how Megger’s True Loop® technology ...