BiasSchaltungen
BiasSchaltungen are circuits that establish a stable direct current (DC) operating point for nonlinear devices such as transistors or diodes, allowing these devices to amplify or process signals in their linear region. They set the base or gate voltage and the collector or source current, isolating the active device from variations in the input signal and, to some extent, from power supply fluctuations. In many designs, a bias network is combined with a signal path to define a quiescent point (Q-point) while permitting the passage of the AC signal.
For bipolar junction transistors (BJTs), common bias topologies include fixed bias, collector-to-base feedback bias, voltage-divider (or
Temperature effects and device parameter variations motivate the use of bias stabilization techniques, such as negative
BiasSchaltungen thus play a foundational role in analog design, determining bias currents, voltage levels, and overall