Archive

Negative feedback

Fundamentally, all electronic devices that provide power gain (e.g., vacuum tubes, bipolar transistors, MOS transistors) are nonlinear. Negative feedback trades gain for higher linearity (reducing distortion) and can provide other benefits. If not designed correctly, amplifiers with negative feedback can under some circumstances become unstable due to the feedback becoming positive, resulting in unwanted ...

Asymptotic gain model

The asymptotic gain model (also known as the Rosenstark method) is a representation of the gain of negative feedback amplifiers given by the asymptotic gain relation:{\displaystyle G=G_{\infty }\left({\frac {T}{T+1}}\right)+G_{0}\left({\frac {1}{T+1}}\right)\ ,} where {\displaystyle T} is the return ratio with the input source disabled (equal to the negative of the loop gain in the case of a single-loop ...

Secrets of 432kHz

Can the current international concert pitch of music somehow be improved to create a more resonant and pleasant positive experience for both the musician and the listener? Can that change be more resonant based on observations of geometry and mathematical patterns found in nature? To answer ...