Abstract:
A new method to deal with the biasing problem of op-amp amplifier is presented. The purpose is to provide for the students a structured method that highlights the line of reasoning to solve the problem of amplifying a signal with no d.c. component, using an op-amp operated from a single power supply. The main idea is: the signal source should see a VTC that allows both positive and negative swing for the signal. The paper presents the general method and its application for a non-inverting and for an inverting amplifier.
