Categories

Questions to Ask Before Proceeding

Textbook

Has the system ever worked before? If yes, has anything happened to…

Practical considerations - Digital Communication

Textbook

A principal consideration for industrial control networks, where the…

Phase-Locked Loops

Worksheets - Wireless/RF

This is a schematic for a simple VCO: The oscillator is of the RC…

Magnetic Fields and Inductance

Textbook

Whenever electrons flow through a conductor, a magnetic field will…

Rectifier Circuits

Textbook

What is Rectification? Now we come to the most popular application of…

Microstrip Inductance Calculator

Tools

This calculator computes the inductance of a microstrip etched on a PCB.

Simple Parallel (Tank Circuit) Resonance

Textbook

Resonance in a Tank Circuit A condition of resonance will be…

EIRP Calculator

Tools

A helpful tool for computing the Effective Isotropic Radiated Power (EIRP) of an antenna

Finite-length Transmission Lines

Textbook

A transmission line of infinite length is an interesting abstraction,…

Review of R, X, and Z (Resistance, Reactance and Impedance)

Textbook

Before we begin to explore the effects of resistors, inductors, and…

Network Protocols

Textbook

Aside from the issues of the physical network (signal types and…

Design Project: Pulse-Width Modulation (PWM) Signal Generator

Worksheets - Wireless/RF

What shape of voltage waveform would you expect to measure (using an…

Link Budget Calculator

Tools

A Link Budget puts into account all gains and losses a signal goes through in a system as it is transmitted. The calculator calculates the power of the received signal given amplifier and antenna gains, and medium loss.

Finite State Machines

Textbook

Up to now, every circuit that was presented was a combinatorial…

Network Topology

Textbook

Point-to-Point Connecting two digital devices with a network, would…

AC Instrumentation Transducers

Textbook

Just as devices have been made to measure certain physical quantities…

Other Diode Technologies

Textbook

Varicap or varactor diodes A variable capacitance diode is known as a…

Radio Circuits

Textbook

(a) Crystal radio. (b) Modulated RF at antenna. (c) Rectified RF at…

Waveguide Calculator (Rectangular)

Tools

This tool calculates the cutoff frequency of a rectangular waveguide

Maximum Power Transfer Theorem

Textbook

The Maximum Power Transfer Theorem is not so much a means of analysis…

Basic AC-DC Power Supplies

Worksheets - Wireless/RF

Don’t just sit there! Build something!! Learning to mathematically…

555 Audio Oscillator

Textbook

PARTS AND MATERIALS Two 6 volt batteries One capacitor, 0.1 µF,…

Electric Fields and Capacitance

Textbook

Introduction Whenever an electric voltage exists between two separated…

Encoder

Textbook

What is an Encoder? An encoder is a circuit that changes a set of…

Induction Motor, Large

Textbook

PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF…

Factoring Equivalencies

Textbook

Factoring Identities :   a2 - b2 = (a + b) (a - b) a2 + 2ab + b2…

A 50-Ohm Cable?

Textbook

Early in my explorations of electricity, I came across a length of…

Capacitance

Worksheets - Wireless/RF

Write an equation describing the precise mathematical relationship…

Strain Gauges

Textbook

If a strip of conductive metal is stretched, it will become skinnier…

Edge Coupled Stripline Impedance Calculator

Tools

A calculator for computing the impedance of an edge coupled stripline.

Sources of Electricity

Worksheets - Wireless/RF

What is the difference between DC and AC electricity? Identify some…

Sensitive Audio Detector

Textbook

PARTS AND MATERIALS High-quality “closed-cup” audio…

Practical Considerations - Transformers

Textbook

Power Capacity As has already been observed, transformers must be well…

Trace Resistance Calculator

Tools

This calculator determines the resistance of a microstrip trace

Karnaugh Maps, Truth Tables, and Boolean Expressions

Textbook

Who Developed the Karnaugh Map? Maurice Karnaugh, a…

Microprocessor Programming

Worksheets - Wireless/RF

What is the difference between a JMP (“jump”) instruction and a…

Digital-to-Analog Conversion

Worksheets - Wireless/RF

If a pulse-width modulated (PWM) signal is sent to a passive…

Memory Devices

Worksheets - Wireless/RF

Don’t just sit there! Build something!! Learning to analyze digital…

Waveguide Calculator (Rectangular)

Tools

This tool calculates the cutoff frequency of a rectangular waveguide

Active-mode Operation (BJT)

Textbook

When a transistor is in the fully-off state (like an open switch), it…

The Command-line Interface

Textbook

If you’ve used DOS or UNIX operating systems before in a…

Conversion From Decimal Numeration

Textbook

Because octal and hexadecimal numeration systems have bases that are…

Semiconductor Devices in SPICE

Textbook

The SPICE (Simulation Program, Integrated Circuit Emphesis)…

Time-delay Relays

Textbook

What are Time-Delay Relays? Some relays are constructed with a kind of…

3-bit Binary Counter

Textbook

PARTS AND MATERIALS 555 timer IC (Radio Shack catalog # 276-1723) One…

Peak Voltage Calculator

Tools

The peak voltage calculator calculates peak voltage values from the peak-to-peak voltage, RMS voltage, or average voltage.

Introduction to Shift Registers

Textbook

Shift registers, like counters, are a form of sequential logic.…

Design Project: Sensitive Audio Detector

Worksheets - Wireless/RF

The choice of step-down transformers to use in a project such as this…

Common Derivatives

Textbook

    RELATED WORKSHEETS: Calculus for Electric Circuits…

PWM Power Controller

Textbook

PARTS AND MATERIALS Four 6 volt batteries One capacitor, 100 µF…

Wire Loop Inductance Calculator

Tools

This calculator helps you compute the inductance of a wire loop.

Shift Registers: Serial-in, Parallel-out (SIPO) Conversion

Textbook

A serial-in, parallel-out shift register is similar to the serial-in,…

Introduction to Operational Amplifiers (Op-amps)

Textbook

What is an Operational Amplifier (Op-amp)? Operational Amplifiers,…

Voltage Divider Circuits

Textbook

Let’s analyze a simple series circuit and determine the voltage…

Tube Parameters

Textbook

For bipolar junction transistors, the fundamental measure of…

Early Tube History

Textbook

Thomas Edison, that prolific American inventor, is often credited with…

VSWR / Return Loss Calculator

Tools

A calculator designed to compute the VSWR, reflection coefficient, return loss and matching loss in a transmission line

How to Build a Current Mirror Circuit

Textbook

PARTS AND MATERIALS   Two NPN transistors—models 2N2222 or…

Historical, Nonmechanical Memory Technologies

Textbook

Perhaps the most ingenious technique was that of the delay line. A…

Design Project: Sensitive Microphone Amplifier

Worksheets - Wireless/RF

Identify which direction each potentiometer wiper must move in this…