Op-Amp Golden RulesThe two assumptions that solve almost every op-amp circuit, and their exact conditions.Electrical EngineeringUnder negative feedback the op-amp drives itsinputs to the same voltage and draws no inputcurrent.V₊ = V₋ · I₊ = I₋ = 0Inverting stageGain = −R_f/R₁Virtual ground.Non-inverting stageGain = 1 + R_f/R₁Never below one.Voltage followerGain = 1Buffering only.THE COMMON MISTAKE✗ Applying the rules with positive feedback✓ Using them only when feedback is negativeWith positive feedback the output sits at a rail and the inputs are not equal. Thatcircuit is a comparator or an oscillator.The rules are an ideal limit. They hold while loop gain is large, whichmeans at low frequency and within the supply rails.Op-Amp Golden Ruleslearnposters.com
Op-Amp Golden Rules — printable engineering wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Op-Amp Golden Rules poster

The rule, 3 worked examples, and the mistake everyone makes.

The rules are an ideal limit. They hold while loop gain is large, which means at low frequency and within the supply rails.

Questions about the Op-Amp Golden Rules poster

What’s on the Op-Amp Golden Rules poster?
The rule, 3 worked examples, and the mistake everyone makes. Under negative feedback the op-amp drives its inputs to the same voltage and draws no…; V₊ = V₋ · I₊ = I₋ = 0; Inverting stage = Gain = −R_f/R₁; Non-inverting stage = Gain = 1 + R_f/R₁; Voltage follower = Gain = 1; Common mistake: Applying the rules with positive feedback → Using them only when feed…. The rules are an ideal limit. They hold while loop gain is large, which means at low frequency and within the supply rails.
Who is the Op-Amp Golden Rules poster for?
Op-Amp Golden Rules belongs to the Electrical Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning electronics can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Op-Amp Golden Rules poster?
Apply them the moment you see negative feedback; refuse them the moment you do not. A wall chart earns its place by being glanceable from where the work is happening, so Op-Amp Golden Rules belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
What other posters go with Op-Amp Golden Rules?
Negative Feedback, BJT Operating Regions and BJT vs MOSFET sit alongside Op-Amp Golden Rules in the Electrical Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Negative FeedbackBJT Operating RegionsBJT vs MOSFET
Is the Op-Amp Golden Rules poster free to download and print?
Yes. Op-Amp Golden Rules downloads as a free PDF with no account, no email and no watermark, like everything else in the Electrical Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Op-Amp Golden Rules poster print at?
Op-Amp Golden Rules is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Op-Amp Golden Rules loses nothing.Printing guide

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