Electrobox is a simple and powerful collection of electronics tools and references.
Electrobox is the new app for students and electricians. This is a free version, which contains ads. You can get rid of the ads and support the developer for a very small price.

The app includes:
• Resistor Color Code;
• SMD Resistor Code;
• Inductor Color Code;
• Ohm's Law;
• Reactance/Resonance;
• Voltage divider;
• Resistor series/parallel;
• Capacitor series/parallel;
• Adjustable voltage regulator;
• Battery Life calculator;
• Voltage Drop Calculator;
• Power Calculator;
• Frequency Converter;
• Analog-Digital Converter;
• Lookup Resistor color by value;
• RMS Converter;
• Range Converter;
• Port pin-out (USB port, Serial port, Parallel port, Ethernet port, Registered Jack, SCART connector, DVI connector, HDMI connector, Display Port, VGA connector, S-Video connector, Jack connector, FireWire connector, RCA connector, Audio DIN connector, XLR and DMX, ATX Power connectors, EIDE/ATA - SATA, PS/2-AT connectors, 25-pair cable color code, Fiber Optic cable color, Power Over Ethernet, VESA Connector, PC peripheral connectors, MIDI/Game port, Apple 30-pin connector, PDMI, Trailer connectors, SD card pin-out, SIM/Smart card, MIDI connector, GPIB/IEEE-488 pin-out, Apple Lightning connector, JTAG pinouts, OBD-II Car connector, Car audio ISO connector, Arduino boards);
• Resources (USB specifications, Resistivity Table, AWG-SWG Wire Size, Ampacity Table, Standard Resistors, Standard Capacitors, Capacitor marking codes, Circuit Schematic symbols, Symbols and Acronyms, SI Units prefixes, ASCII Table, Boolean Logic gates, Switch Information, Batteries, Coin Batteries, Decibel Table, Radio frequencies, Thermocouples colors, SMD Package Sizes, PT100 Conversion Table, Fuses color code, Automotive Fuses colors, DIN 47100 color coding, IP marking, World Plugs & Sockets, IEC Connectors, NEMA connectors);
• Full support for EIA resistor series for all calculators;

The application has a lot of features like calculators, pinouts and resources and interfaces information.
It is possible to sort the lists according to your preferences.

If you like the program, please rate it, and buy the full version to support the development.