6.6 ANALYSIS OF OPERATIONAL AMPLIFIER CIRCUITS USING THE IOA MODEL
The principles enunciated in the preceding section can be used to develop a much simplified analysis procedure for circuits containing Opamps. The procedure is outlined below:
- Ascertain whether the circuit has a negative or positive feedback. If it is a positive feedback circuit, the IOA model cannot be used for its analysis. Only the principle of zero input current will be applicable for such circuits. Other analysis procedures using nodal analysis or mesh analysis along with zero input current principle will be needed in this case.
- Prepare node equations at all nodes except the ground node. Ground node is taken as the reference node for nodal analysis. Use the principle of ...
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