Electronic Circuits VI: Op-Amp Feedback and Exact Gain Networks Step by Step
A lightweight execution-visualization book.
Ideal Feedback Contract
Feedback Forces Equal Inputs
Input Current Is Zero
Rails Break the Linear Contract
Inverting Feedback Ratios
Inverting Gain Is a Resistor Ratio
Feedback Current Matches Input Current
Changing Feedback Ratio Changes Gain
Non-Inverting Gain and Followers
Non-Inverting Gain Adds One
Voltage Follower Copies Input
Gain Still Has Rails
Summing and Difference Networks
Inverting Summer Adds Currents
Weighted Summer Shows Resistor Weights
Difference Amplifier Subtracts First
Feedback Gain Cross Scans
Inverting Gain Three-Row Scan
Non-Inverting Gain Three-Row Scan
Summing Current Three-Row Scan
Op-Amp Source-Factor Depth Scans
Inverting Input Voltage Three-Row Scan
Input Resistance Three-Row Scan
Non-Inverting Input Voltage Three-Row Scan
Difference Source Gap Three-Row Scan
Rail Ceiling Three-Row Scan