ECE Formulas

Complete formulas for ECE

Elementary Particles

Maximum Number of Electrons in a Shell (Bohr Model)

A Coulomb of Electric Charge

Electric Current

Current Density

Wire Resistance

Temperature Effect

Coulomb's Law

Electric Field

Gauss' Law

Electric Flux Density

Electrical Potential Difference

Magnetic Field

Magnetic Force Due to an Electric Charge

Permeability of Materials

Relative Permeability

Magnetic Flux due to the current in a wire

Magnetic Force due to the current in a wire

Force Between Two Current-Carrying Conductors

Magnetic Field of a Current-Carrying Loop

Magnetic Field of a Solenoid

Magnetomotive Force

Magnetic Flux

Magnetic Field Strength

Reluctance

Reluctance in Series and Parallel

Energy Stored in Magnetic Circuit

Electromagnetic Induction (Faraday's 2nd Law)

Induced Electromotive Force in a Short Length of Wire

Resistors in Series

Resistors in Parallel

Capacitor Charge

Capacitance

Capacitor Current-Voltage Relationship

Capacitive Reactance

Capacitor Stored Energy

Capacitors in Series

Capacitors in Parallel

Coil Inductance

Inductor Voltage-Current Relationship

Inductive Reactance

Inductor Energy Stored

Mutual Inductance

Total Inductance of Two Series Coils with Mutual Inductance

Inductors in Series

Inductors in Parallel

Transformers

SI Prefixes

Ohm's Law

Electrical Power and Electrical Energy

Thevenin's Theorem

Millman's Theorem

Δ (Delta) and Y (Wye) Network Conversion

Passive Elements Impedances and Admittances

Circuit Impedance

Series RLC Equivalent Impedance

Parallel RLC Equivalent Impedance

RC Low-Pass Filter Cutoff Frequency

RC High-Pass Filter Cutoff Frequency

RL Low-Pass Filter Cutoff Frequency

RL High-Pass Filter Cutoff Frequency

RC Bandpass Filter Cutoff Frequencies

RC Band-Stop Filter Notch Frequency

Passive Filters Attenuation

Electrical Transients

Diode Current Equation

Thermal Voltage

Diode DC or Static Resistance

Diode AC or Dynamic Resistance

Diode Power Dissipation

Diode Forward Current (Ideal Diode Model)

Diode Forward Current (Practical Diode Model)

Diode Forward Current (Complete Diode Model)

Half-Wave Rectifier

Full-Wave Rectifier (Center-Tapped Transformer)

Full-Wave Rectifier (Bridge Network)

BJT Configurations

Bipolar Junction Transistors (BJT) General Formulas

Fixed-Bias Configuration

Emitter-Bias Configuration

Voltage-Divider Bias Configuration

Collector Feedback Configuration

Emitter Follower Configuration

Common-Base Configuration

Darlington Configuration

Cascode Configuration

Feedback Pair Configuration

Direct Coupled Configuration

Field Effect Transistors (FET) Types

Field Effect Transistors (FET) General Formulas

FET Fixed-Bias Configuration

FET Self-Bias Configuration

FET Voltage-Divider Bias Configuration

FET Common-Gate Configuration

Power Amplifiers Table

Class A Series-Fed Amplifier

Class A Transformer-Coupled Amplifier

Class B/AB Amplifier

Class C Amplifier

Amplifier Distortion