Electronics Tools for iOS

Made by electrical engineers and hobbyists for electrical engineers and hobbyists, Electronics Tools provides solutions to a wide range of circuit calculations. From the basics (Ohms Law) to the more complex (8th order active filters), Electronics Tools has you covered with a clean and straight forward interface that provides the information you need.

For instance, suppose you wanted to find the values needed for a simple second order active filter. Entering just the frequency finds the optimum resistor and capacitor values in five tolerance bands and gives you the minimum and maximum corner frequencies for each tolerance. Optionally, you can enter additional values, such as the resistor value, and the remaining values will be calculated. Every calculation provides the information that you need to know when working with your circuits.

On smaller screens such as an iPhone, the calculation results can be fully displayed by tapping the Show button. The display can also be split showing the data entry area and its schematic along with a scrolling partial view of the results.

Electronics Tools includes calculators for:

Basic Calculations

Calculator

Capacitance reactance

dB - Voltage

dB - Power

Frequncy-period-wavelength

Inductance reactance

LC resonance

LED series resistor

Ohm's Law

Other Multipliers

Parallel and series capacitor value

Parallel and series inductor value

Parallel and series resistor value

Phase-delta t

RMS-peak-peak to peak

Components

FET cheat sheet (Reference)

Resistor Color Code Decoder

Resistor Color Codes Article (Article)

Resistor Value Check

Resistor Value to Color Code

SMD resitor marking to and from value

Standard resistance values (Reference)

Conversions

Area

Length

Temperature

Volume

Dividers

Dual Supply

Pot with Resistor Dual Supply

Pot with Resistor Ratio

Pot with Resistor Single Supply

Resistor Ratio

Single Supply

Filters

2nd Order bandpass

2nd Order bandpass Biquad

2nd Order highpass

2nd Order lowpass

4th Order highpass

4th Order lowpass

6th Order highpass

6th Order lowpass

8th Order highpass

8th Order lowpass

Filter Types (Article)

Highpass RC & RL Amplitude and Phase

Lowpass RC & RL Amplitude and Phase

Passive RC

Passive RL

Power Supply ripple (Full Wave)

Power Supply ripple (Half Wave)

Logic

Basic Gates (Reference)

Flip Flop (Reference)

Interfacing Different Logic Families (Article)

Op-amp

Differential Amplifier

Inverting Amplifier

Non-inverting Amplifier

Op-amp basics (Article)

Op-amp errors (Article)

Transimpedance Amplifier (Article)

Oscillators

555 astable (free running)

555 monostable (one shot)

Logic Gate Oscillator

Sine and Cosine Oscillator

Other References

ANSI clearance and tap

Drill Table

Wire Table

Voltage Regulators

LM317 - LM338

LM337

Zener

Circuit Snippets

Adder Subtractor

Capacitance Multiplier

Constant Current Source

Crystal Oscillator

Op-amp Bridge Drive

Parallel Op-amps

Parallel Transistors

Summing Amplifier

Voltage to Current