EE Toolbox: Electronics

EE Toolbox is an offline toolbox for electrical and electronics work. Calculate common circuit values, decode component codes, save results, and access practical engineering references without needing an account. Included tools: • Ohm's Law • Power calculator • Voltage divider • LED resistor • Series and parallel resistors • Series and parallel capacitors • RC time constant • RC filter cutoff • LC resonance • Frequency, period, and wavelength • Reactance • Battery life estimate • Transformer turns ratio • 555 astable timer • 555 monostable timer • Op-amp gain • Decibel converter • ADC resolution • DAC output • Resistor color code • SMD resistor code Built for: • Electrical engineering students • Electronics engineers • Technicians • Embedded developers • Makers and hobbyists Why EE Toolbox: • Works offline • Fast search and favorites • Saved calculations • Formula and unit explanations • Camera OCR support for printed component markings • Barcode and QR text capture • No account required • Local-first storage Important: engineering results are provided as practical calculation aids. Always verify critical designs using proper standards, datasheets, measurements, and professional judgment.