A professional engineer often has to collaborate with others.  And regardless if it is a proposal in the early stages of a project, or a final design there is often continued discussion and feedback in regard the project.  So, some means of communicating questions, comments, and changes is needed.  Assuming that all parties involved have [...]

A phase-locked loop or phase lock loop (PLL) is a control system that generates a signal that has a fixed relation to the phase of a “reference” signal. A phase-locked loop circuit responds to both the frequency and the phase of the input signals, automatically raising or lowering the frequency of a controlled oscillator until [...]