Analog Electronics & Op-Amp Calculators Comparator Hysteresis Calculator Calculate comparator hysteresis voltage, upper threshold, lower threshold, resistor values, switching points, and Schmitt trigger characteristics for stable analog circuit design. Open Tool
Electronic Circuit Diagrams & 555 Timer Projects Contactless Car Door Open Reminder Alarm Circuit Contactless car door open reminder alarm circuit diagram using magnetic, Hall-effect, or proximity sensing with complete working principle, components, and automotive safety applications. Open Tool
Electronic Circuit Diagrams & 555 Timer Projects Contactless Car Reverse Backup Alarm Circuit Contactless car reverse backup alarm circuit diagram using ultrasonic or IR proximity sensing with complete working principle, components, applications, and practical circuit design. Open Tool
Electronic Circuit Diagrams & 555 Timer Projects Continuity Tester Circuit using 555 Timer 555 timer continuity tester circuit diagram with complete working principle, buzzer indication, component selection, testing method, and practical electronics applications. Open Tool
Popular Cable, Wire Gauge & Voltage Drop Calculators Copper vs Aluminum Wire Size Calculator (NEC / IEC 60228) Compare and calculate equivalent conductor sizes, ampacity ratings, and weight differences between copper and aluminum electrical cables. Open Tool
Development Board Pinouts & GPIO Reference Cubieboard Pinout Reference Find Cubieboard pinouts instantly with this free Cubieboard Pinout Reference. View GPIO layouts, power pins, communication interfaces, expansion headers, and pin configurations for Cubieboard single-board computers. Open Tool
Power Electronics & SMPS Design Calculators Data Logger Battery Life Calculator (Sleep & Active Duty Cycle) Calculate battery longevity for IoT sensor nodes and data loggers based on active current, sleep current, sample rate, and duty cycle. Open Tool
Electronic Circuit Diagrams & 555 Timer Projects Daytime Car Headlights Reminder Circuit Daytime car headlights reminder circuit diagram with complete working principle, light sensing, buzzer warning, components, and automotive safety applications. Open Tool
Electrical & Engineering Calculators dBm to dBW & Watts Power Converter (RF & Telecom) Convert RF and optical signal power between dBm (decibel-milliwatts), dBW (decibel-watts), and linear Watts/milliwatts instantly. Open Tool
Electrical & Engineering Calculators dBuV to mV/m Field Strength & Voltage Converter (EMC / RF) Convert RF receiver voltage and electric field strength between dBuV, microvolts (µV), millivolts (mV), and mV/m for EMC compliance testing. Open Tool
Electrical & Engineering Calculators dBµW to Watts & dBm Power Converter (Optical & Low-Power RF) Convert low-power RF and fiber-optic signal levels between dBµW (decibel-microwatts), linear Watts, and dBm with high precision. Open Tool
Electronics Engineering Resources, Charts & Tables Decibel (dB) Conversion Table Browse a complete decibel (dB) conversion table for power, voltage, current, sound pressure, gain, attenuation, and logarithmic ratios. Ideal for RF, audio, telecommunications, electronics, and engineering calculations. Open Tool
Electronics Engineering Resources, Charts & Tables Decibel Noise Level Chart Browse common decibel (dB) noise levels with real-world sound examples, hearing safety limits, OSHA recommendations, and typical environmental noise references for engineering, industrial, and educational use. Open Tool
Electrical & Engineering Calculators Degrees Minutes Seconds (DMS) to Decimal Degrees Converter (GPS / GIS) Convert geographic GPS coordinates and angular measurements between Degrees, Minutes, Seconds (DMS) and Decimal Degrees (DD). Open Tool
Electronics Engineering Resources, Charts & Tables DIN 47100 Color Coding Chart Browse the DIN 47100 color coding chart for multi-core cables with conductor color identification, wire numbering, communication cable standards, and wiring references for industrial and electrical applications. Open Tool
Electronic Color Code Calculators & Charts Diode Color Code Calculator (JEDEC 1N Series Standard) Decode standard JEDEC solid-state diode color bands to identify 1N-series part numbers, cathode band orientation, and electrical polarity. Open Tool
RF & Microwave Engineering Calculators Directional Coupler Calculator (Coupling, Isolation & Directivity) Calculate coupling factor, directivity, isolation, and insertion loss for 3-port and 4-port RF directional couplers per IEEE standards. Open Tool
Electronic Component Packages & Footprint Guide Discrete Semiconductor Guide Discrete semiconductor guide covering diodes, transistors, thyristors, MOSFETs, IGBTs, SCRs, TRIACs, packages, characteristics, applications, and selection reference. Open Tool
Electronic Circuit Diagrams & 555 Timer Projects DIY Smart Soldering Iron Project DIY smart soldering iron project with complete circuit diagram, temperature control, microcontroller interface, OLED display, PID control, and practical electronics construction guide. Open Tool
PCB Design & Trace Calculators (IPC Standards) Edge-Coupled Stripline Impedance Calculator (Differential Z0) Calculate differential, odd-mode, and even-mode characteristic impedance for edge-coupled symmetric stripline pairs per IPC-2141A. Open Tool
PCB Design & Trace Calculators (IPC Standards) Edge-Coupled Trace Inductance Calculator (Mutual Inductance) Calculate self-inductance, mutual inductance (Lm), and coupling coefficient (k) for edge-coupled parallel PCB conductor traces. Open Tool
Popular RF & Microwave Engineering Calculators EIRP & ERP Calculator (Effective Isotropic Radiated Power / FCC) Calculate EIRP (dBm, dBW) and ERP from transmitter output power, cable insertion loss, and antenna dBi gain per FCC regulations. Open Tool
Electronics Engineering Resources, Charts & Tables Electrical & Electronic Abbreviations Table Browse a complete reference of electrical and electronic abbreviations used in circuit diagrams, datasheets, engineering drawings, PCB design, industrial automation, telecommunications, RF systems, and electrical engineering documentation. Open Tool
Popular Electronics Engineering Resources, Charts & Tables Electrical and Electronic Symbols Chart Browse a comprehensive chart of electrical and electronic symbols used in circuit diagrams, schematics, PCB design, electrical wiring, automation, power systems, and electronics engineering documentation. Open Tool
Electrical & Engineering Calculators Electrical Degrees to Meters & Wavelength Converter (RF Transmission) Convert electrical phase length (degrees / radians) into physical transmission line length in meters, feet, and fractions of wavelength (λ). Open Tool
Electronics Engineering Resources, Charts & Tables Electrical Resistivity Table Browse the electrical resistivity table of metals, alloys, semiconductors, insulators, and conductive materials with resistivity values, conductivity comparisons, and engineering reference data. Open Tool
Popular Cable, Wire Gauge & Voltage Drop Calculators Electrical Wire & Cable Voltage Drop Calculator (AC & DC / NEC) Calculate single-phase, three-phase, and DC cable voltage drop, percentage loss, and wire end voltage per NEC 3% maximum guidelines. Open Tool
Engineering Utility Tools & Converters Electrical Wire & Cable Voltage Drop Calculator (AC & DC / NEC) Calculate voltage drop (Volts), percentage loss, and cable end voltage for AC single-phase, three-phase, and DC circuits per NEC standards. Open Tool
Passive Component Calculators (RLC Circuits) Electrical Wire Resistance Calculator (Resistivity & Temperature) Calculate electrical DC resistance of any conductor from material resistivity (ρ), cross-sectional area, length, and operating temperature. Open Tool
Cable, Wire Gauge & Voltage Drop Calculators Electrical Wire Size Calculator (AWG, SWG & mm² / NEC Ampacity) Determine required wire gauge (AWG, SWG, mm²) based on continuous load current, maximum allowable voltage drop, and circuit distance. Open Tool