Operational Amplifiers Guide

Op Amp Tool – Design & Calculate Operational Amplifier Circuits

Your Ultimate Guide to Operational Amplifier Circuits and Calculations

Whether you're a student, hobbyist, or professional electronics engineer, Op Amp Tool provides everything you need to design, calculate, and simulate analog circuits using operational amplifiers (op-amps). The app includes over 70 circuit examples, calculators, and reference guides to help you build projects, study theory, or prototype analog systems.

Use it as a portable circuit design assistant—perfect for labs, fieldwork, or classroom learning.

Features & Circuit Categories:

Amplifiers

• Non-inverting & inverting amplifiers

• Voltage repeaters

• Differential amplifiers (with & without T-bridge)

• AC voltage amplifiers

Active Filters

• Low-pass & high-pass filters (inverting & non-inverting)

• Bandpass filter

• Gyrator-based designs

Integrators & Differentiators

• Single & double integrators

• Voltage differentiators

• Advanced sum and difference configurations

Comparators

• Standard comparators

• Limiters (with/without Zener diodes)

• RS trigger circuits

Attenuators:

• Inverting and non-inverting configurations

Converters:

• Voltage-to-current converters (inverting, non-inverting, and differential)

Adders & Subtractors

• Inverting & non-inverting adders

• Addition-subtraction circuits

Logarithmic & Exponential Amplifiers

• Diode and transistor-based logarithmic/exponential amplifiers

Sine Wave generators:

• Op-Amp Oscillators

• Oscillator with Diode in the Feedback Path

• Twin-T Network Signal Generator

Square-wave pulse generators

• Op-Amp Square-Wave Generator

• Adjustable Square-Wave Generator

• Enhanced Square-Wave Generator

• Duty-Cycle Adjustment

Triangle-wave signal generators

• Nonlinear Triangle-Wave Generator

• Variable-Symmetry Sawtooth Generator

• Linear Triangle-Wave Generator

• Adjustable Linear Triangle-Wave Generator

• Variable-Symmetry Ramp Generator

Reference Section

• Pinouts and descriptions for popular operational amplifiers and comparators

The application is available in 11 languages: English, French, German, Indonesian, Italian, Polish, Portuguese, Russian, Spanish, Turkish, and Ukrainian.

New calculators and circuit examples are added with every update to ensure the app stays relevant and useful.

Design smarter analog circuits—get started with Op Amp Tool today!