What’s on the Op-Amp Configurations poster
A 6-row table: Circuit · Output · Input impedance.
Ideal expressions, valid while the loop gain stays large.
- Inverting — −V_in R_f/R₁ — R₁
- Non-inverting — V_in (1 + R_f/R₁) — Very high
- Voltage follower — V_in — Very high
- Summing, inverting — −R_f Σ(V_n/R_n) — R_n per input
- Difference — (V₂ − V₁) R_f/R₁ — Set by the resistors
- Integrator — −(1/RC) ∫V_in dt — R
The difference amplifier's rejection rests entirely on resistor matching: 1% parts hold common-mode rejection to about 46 dB.
Questions about the Op-Amp Configurations poster
- What’s on the Op-Amp Configurations poster?
- A 6-row table: Circuit · Output · Input impedance. Ideal expressions, valid while the loop gain stays large. Inverting — −V_in R_f/R₁ — R₁; Non-inverting — V_in (1 + R_f/R₁) — Very high; Voltage follower — V_in — Very high; Summing, inverting — −R_f Σ(V_n/R_n) — R_n per input; Difference — (V₂ − V₁) R_f/R₁ — Set by the resistors; Integrator — −(1/RC) ∫V_in dt — R. The difference amplifier's rejection rests entirely on resistor matching: 1% parts hold common-mode rejection to about 46 dB.
- Who is the Op-Amp Configurations poster for?
- Op-Amp Configurations 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 Configurations poster?
- Most analogue signal conditioning is one of these six, or two of them in series. A wall chart earns its place by being glanceable from where the work is happening, so Op-Amp Configurations belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Op-Amp Configurations?
- BJT Operating Regions, BJT vs MOSFET and Common-Emitter Amp sit alongside Op-Amp Configurations 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.BJT Operating RegionsBJT vs MOSFETCommon-Emitter Amp
- Is the Op-Amp Configurations poster free to download and print?
- Yes. Op-Amp Configurations 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 Configurations poster print at?
- Op-Amp Configurations 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 Configurations loses nothing.Printing guide
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