Electronics Engineer Helper
Calculators and references
| Revenue % | |||||
|---|---|---|---|---|---|
| Annual · 1 month trial | 175 | $2.69 – $4.93 | 24.8% | +18.0% | |
| One-time purchase | 175 | $6.91 – $12.59 | 24.8% | +18.0% |
Description
Digital toolbox for electronics engineers and electricians. Calculators and references for beginners and professionals — for work, study, DIY, and repair. Used by over 100,000 users. Completely ad-free.
Included tools:
Datasheet search
Equivalent parts search (cross reference for transistors, diodes and ICs)
Resistor color and digit marking (4, 5 and 6 band color code; 2 symbols, 3/4 digit and EIA-96 code SMD resistors code)
Electronic schematic symbols (IEC 60617, IEEE 315 and GOST standards)
Pinouts of connectors and interfaces (USB, HDMI, DisplayPort, DVI, VGA, Thunderbolt, Apple Lightning and 30-pin, SATA, PCI Express and M.2, Ethernet RJ45 with PoE, RJ11/RJ14/RJ25, RS-232/422/485, IEEE 1394 FireWire, ATX, computer fans, SD card, audio jack, RCA, MIDI, XLR, PS/2, D-sub, SMEMA)
Pinouts of boards and microcontrollers (Raspberry Pi and Pico, Arduino, ESP32, ESP8266, STM32 Nucleo, Teensy, Orange Pi, RADXA Rock Pi, LubanCat, Flipper Zero, ATmega and ATtiny)
Ohm's law calculator
AWG converter (wire diameter, cross-section area, resistance and maximum current)
Resistor for LED
Voltage divider
Wheatstone bridge (output voltage or unknown resistance, current and power of every arm)
Capacitor code
Capacitor markings
Capacitor ESR tables
Frequency response curve calculation of passive filters (RC, RL, RLC, LC)
Inductor color code
Air-core coil calculator (inductance or number of turns of a single-layer solenoid)
Ideal transformer (winding turns, voltages and currents)
Linear current regulator
SMD packages list
Reactance
PCB trace resistance
Active, apparent and reactive power
RMS converter (peak, RMS and peak-to-peak values for seven waveform shapes)
555 waveform generator
Operational amplifiers
RLC circuit
Number conversion
Unit converter
Cable voltage drop
Battery life (runtime of a battery pack, with discharge curve)
NTC thermistor resistance
Logic gates
RC circuit
Decibels calculator
25-pair cable color code
Fuse color marking
Additionally, by purchasing the PRO version of the app, you will get access to additional tools:
SMD components marking codes
Diodes color code (Pro Electron, JEDEC and JIS-C-7012 standards)
Linear voltage regulator
Resistor value to color or SMD code marking converter
Voltage rectifier
Series or parallel electrical components' connection calculator
Diode voltage drop
Minimum PCB trace width
Analog to digital conversion
Attenuators
4-20 mA signal converter
Thermocouple calculator
Resistance thermometer
Buck switching voltage regulator
Wire resistance
Zener diode regulator (Zener diode and series resistor selection from a catalogue of 438 parts)
Load cell (bridge output voltage to weight, force, pressure or torque)
BJT voltage divider biasing
Transformer turns per volt (from core area, flux density and frequency)
Junction temperature (with or without a heatsink, power derating curve)
Solar string dimensioning (minimum voltage and current ratings for a PV array)
Solar cable and fuse selection (NEC and IEC rules)
555 astable generator with variable duty cycle
NTC thermistor in a voltage divider and with an ADC input
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