Electronic Engineer Handbook
A practical, project-ready reference for working electronics engineers: interactive calculators and condensed, verified specs for components, protocols and PCB design.
Choose a module
Testing & Measurement
Bench calculators and measurement tips: frequency, AC voltage, power, RC time constant, wire resistance and DMM accuracy.
🧮Electronics Calculators
Interactive real-time calculators: Ohm's law, voltage dividers, LED resistors, RC/LC, op-amp gain.
🔌Components & Pinouts
Resistor color codes, E-series values, SMD packages, common IC pinouts, diode/transistor polarity.
📡Protocols & Comms
UART, I2C, SPI, USB, RS-485, Ethernet: levels, bauds, frames, pinouts and timing references.
🔬PCB Design Rules
Trace current, impedance, via sizes, spacing, copper weights and manufacturing capabilities.
🔋Power Design
Buck/boost duty & ripple, heatsink sizing, LDO dissipation and LC output filters.
🎚️Analog Filters
RC/RLC/Sallen-Key cutoff, resonance and Q calculators plus filter-family reference tables.
📐Analog Circuit Design
Op-amp gain & bandwidth, slew rate, comparator hysteresis, instrumentation and difference amplifiers plus part reference tables.
🎛️Embedded / MCU
Timer PWM, UART baud, ADC, PLL clock-tree, watchdog and SPI throughput calculators plus MCU family reference tables.
💾Memory & Storage
Capacity & address-line conversion, memory bandwidth, flash write time & endurance and EEPROM address calculators plus storage-bus reference diagrams.
🧠Digital Logic
Open-drain pull-ups, RC rise-time & bandwidth, CMOS dynamic power and logic fan-out calculators plus logic-family reference tables.
📟Sensor Interfaces
Wheatstone bridge, RTD resistance, thermistor divider and photodiode TIA calculators plus sensor conditioning reference tables.
⚙️Motor Control
Mechanical power & torque, synchronous speed, PWM drive voltage and stepper angle calculators plus motor-type and drive reference tables.
🛡️EMC & Signal Integrity
Rise-time bandwidth, critical trace length, crosstalk and decoupling resonance calculators plus signal-speed and termination reference tables.