Circuit Calculator Android App, by vdv

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Circuit Calculator Android App, by vdv - RF Cafe

RF Cafe visitor Dmitriy recently wrote to let me know about the extensive suite of electronics circuit design apps he created for Android smartphones. There is the Circuit Calculator app with 170⁺ circuits for design, 50⁺ electronics calculators, 20⁺ application notes, and a logic solver. The Power Stage Design Tool is for switch mode power supplies. Filter Designer handles multi-stage analog active filters, and there is a stand-alone Resistors app. He even has a Cost, Please! app for tracking travel-related costs. I could be wrong, but it appears most of the capability of the other two design apps is included in Circuit Calculator. All apps work offline without an Internet connection. Files sizes are significantly smaller than similar apps.

Does the world need yet another circuit design app when so many already exist, you might ask? According to Dmitriy: "There is a list of well-known electronics design tools for Android which can be found in every review for the last 10 years: 'Electrodoc,' 'Every Circuit,' 'Droid Tesla,' 'Electronics Toolbox,' 'RF & Microwave Toolbox,' and so on. Also, there is a lot of trash on the market that turns finding a good tool into a quest."

Per Dmitriy:

"A common device has an MPU, high-speed interfaces, an ADC and DAC with analog front-end. So, an engineer needs to design amplifiers, drivers, filters, power circuits, calculate PCB trace geometry to meet impedance and current requirements. 'Circuit Calculator' is intended to solve these tasks.

[The] current version includes more than 150 circuits for design and more than 50 calculators.

Nowadays most tools are online and require a large screen.

This tool works on small size Android devices and without the Internet."

Here are a few screen captures of the calculators taken from an extensive online review of Circuit Calculator on the Habr Blockchain website. Some calculators not shown here of particular interest to RF Cafe visitors are microstrip impedance and dimensions, free space path loss, air core inductors, skin depth, coaxial cables, attenuators, wavelength-frequency, and RF shield resonances.

November 20, 2022 Update: Dmitriy provided these additional screen shots of some of the RF / microwave calculators.