Circuit Calculator

"Circuit Calculator" is an offline electronics design tool for hardware design engineers.
Convenience, visibility and ability to find an optimal solution in minimum time.
140 analog circuit topologies, 50 electronics calculators, 20 Application Notes, Logic Solver.
You can try "Circuit Calculator Demo" before you buy:
https://play.google.com/store/apps/details?id=com.vdv.circuitcalculator.demo
This electronics design tool is designed by an engineer for engineers and is able to save you a lot of time!
* Amplifiers;
* Variable Gain Amplifiers;
* Drivers;
* Mathematical Operations;
* Current Sources and Receivers;
* Impedance Converters;
* Low-pass, High-pass, Band-pass, Band-stop, All-pass Filters;
* Impedance Matching;
* Power Circuits;
* Switching-Mode Power Supply Modules with small-signal analysis;
* Control Loop Compensation;
* Others Passive and Active Circuits;
* Reverse: calculation of circuit parameters at known values of its components if it is possible.
Suitable for electronic circuit verification and reverse engineering;
* Logic Solver, from 2 to 6 inputs;
* Electronics toolbox;
* Application Notes with information about components, circuits, standards;
You can use Filter Designer to design multistage active analog filters, available in the Google Play Store.
https://play.google.com/store/apps/details?id=com.vdv.filterdesigner