Categories

Principles of Radio

Textbook

One of the more fascinating applications of electricity is in the…

Radio Circuits

Textbook

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

Free Space Path Loss Calculator

Tools

This calculator calculates the free space loss, given the distance, frequency, and gain, between two antennas.

High-Reliability Circuits

Worksheets - Military/Aero/Space

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

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.

Quantum Physics

Textbook

“I think it is safe to say that no one understands quantum…

Special-purpose Diodes

Textbook

Schottky diodes Schottky diodes are constructed of a metal-to-N…

Fundamentals of Radio Communication

Worksheets - Military/Aero/Space

What does the acronym RF stand form, in reference to radio-related…

Design Project: Radio Transmitter

Worksheets - Military/Aero/Space

Research the FCC (Federal Communication Commission) guidelines on…

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

Junction Field-effect Transistors

Textbook

The field effect transistor was proposed by Julius Lilienfeld in US…

Impedance Matching With Transformers

Worksheets - Military/Aero/Space

Suppose you were to take a 3 kW electric heater rated for 240 VAC and…

Atomic Structure

Worksheets - Military/Aero/Space

Shown here is a simplified representation of an atom: the smallest…

Capacitor Sizing Equation

Textbook

Capacitance Formula     Permittivity of Dielectric  …

Boolean Rules for Simplification

Textbook

Boolean algebra finds its most practical use in the simplification of…

The TRIAC

Textbook

SCRs are unidirectional (one-way) current devices, making them useful…

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

Converting Truth Tables into Boolean Expressions

Textbook

In designing digital circuits, the designer often begins with a truth…

Inverting Op-Amp Resistor Calculator

Tools

This calculator determines the bias and feedback of resistors for an inverting op-amp.

Asynchronous Flip-Flop Inputs

Textbook

The normal data inputs to a flip flop (D, S and R, or J and K) are…

Input and Output Coupling

Textbook

To overcome the challenge of creating necessary DC bias voltage for an…

Inductive Reactance

Worksheets - Military/Aero/Space

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

Shift Registers: Serial-in, Serial-out

Textbook

Serial-in, serial-out shift registers delay data by one clock time for…

Signal Modulation

Worksheets - Military/Aero/Space

A modern method of electrical power control involves inserting a…

Power Calculations

Textbook

When calculating the power dissipation of resistive components, use…

Wire-by-Number project kit introduction

Worksheets - Military/Aero/Space

Wire-by-Number project: simple voltage divider Description: Build a…

Power Measurement

Textbook

Power measurement in AC circuits can be quite a bit more complex than…

Biasing Techniques (JFET)

Textbook

General Troubleshooting Tips

Textbook

When first approaching a failed or otherwise misbehaving system, the…

Optical Data Communication

Textbook

A modern alternative to sending (binary) digital information via…

Series-Parallel Combination AC Circuits

Worksheets - Military/Aero/Space

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

Polyphase Power Systems

Worksheets - Military/Aero/Space

Explain the difference between a balanced polyphase system and an…

AC Negative Feedback OpAmp Circuits

Worksheets - Military/Aero/Space

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

Switches, Hand Actuated

Textbook

A switch is an electrical component that can “make” or…

The D Latch

Textbook

Since the enable input on a gated S-R latch provides a way to latch…

Circuit Simplification Examples

Textbook

Let’s begin with a semiconductor gate circuit in need of…

Vectors and AC Waveforms

Textbook

OK, so how exactly can we represent AC quantities of voltage or…

Heat Sink Calculator

Tools

This calculator helps determine the maximum temperature a device can withstand

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

Bipolar junction transistors (Also known as BJTs) can be used as an…

Power Measurement

Textbook

Power measurement in AC circuits can be quite a bit more complex than…

Monostable Multivibrators

Textbook

We’ve already seen one example of a monostable multivibrator in…

Battery Construction

Textbook

The word battery simply means a group of similar components. In…

Make Your Own Multimeter

Textbook

PARTS AND MATERIALS Sensitive meter movement (Radio Shack catalog #…

Converting Truth Tables into Boolean Expressions

Textbook

In designing digital circuits, the designer often begins with a truth…

Kelvin (4-wire) Resistance Measurement

Textbook

Suppose we wished to measure the resistance of some component located…

Delta-Sigma ADC

Textbook

One of the more advanced ADC technologies is the so-called…

7-segment Display

Textbook

PARTS AND MATERIALS 4511 BCD-to-7seg latch/decoder/driver (Radio…

Differential Equations

Textbook

As opposed to normal equations where the solution is a number, a…

Potential Pitfalls

Textbook

Fallacious reasoning and poor interpersonal relations account for more…