Operational Amplifiers Guide vVARY

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 50 calculators, circuit examples, 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

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!