Though it may seem strange to cover the elementary topic of electrical…
The wires between the tank and the monitoring location is called…
By now you should be well aware of the correlation between electrical…
The electrons of different types of atoms have different degrees of…
Perhaps the most challenging aspect of interpreting ladder diagrams,…
The circuit in the previous section is not a very practical one. In…
A right triangle is defined as having one angle precisely…
All About Contactors When a relay is used to switch a large amount of…
Of course, there is a danger of electrical shock when directly…
This calculator helps you compute the inductance of a wire loop.
In this hands-on AC electronics experiment, power a DC motor through a multi-conductor cable to learn how AC signals are coupled between conductors and how to mitigate noise coupling.
It should be common-sense knowledge that liquids flow through…
The smaller the cross-sectional area of any given wire, the greater…
This calculator will solve for either distance, time, or speed given two of the three parameters.
A switch can be constructed with any mechanism bringing two conductors…
Ampacities of copper wire, in free air at 30o C: INSULATION TYPE…
What are Simultaneous Equations and Systems of Equations? The terms…
While Oersted’s surprising discovery of electromagnetism paved…
Notice something important here: taking the derivative of f(x)…
To build the DIY electronics projects described in this textbook, you will need a small work area, a few tools, and some basic electronics supplies. This page describes the setup of a low-cost home electronics laboratory.
In this hands-on electronics experiment, you will control a 7-segment binary-coded decimal (BCD) display and learn about active-low and active-high logic inputs.
Power in an electric circuit is the product (multiplication) of…
What Is an XOR Gate? One element conspicuously missing from the set of…
Metric Prefixes Yotta = 1024 Symbol: Y Zetta = 1021 Symbol: Z…
The atoms in insulating materials have very tightly-bound electrons,…
In any electrically conductive substance, what are charge carriers?…
Determine what the magnitude and polarity of the voltmeter’s…
No text on electrical metering could be called complete without a…
Like bipolar transistors, SCRs and TRIACs are also manufactured as…
Don’t just sit there! Build something!! Learning to analyze relay…
Note the “50 ohm” rating printed on the jacket of the cable. What…
Pulse Width Modulation (PWM) uses digital signals to control power…
Suppose we wished to measure the resistance of some component located…
What is the difference between DC and AC electricity? Identify some…
The basic application of Ohm’s law to combinations of series and…
Centuries ago, it was discovered that certain types of mineral rock…
We can construct a simple logic functions for our hypothetical lamp…
“Garbage in, garbage out.” —Anonymous SPICE…
In this hands-on electronics experiment, you will build a null-balancing potentiometric voltmeter and learn how to prevent a voltmeter from changing the voltage it is measuring.
A voltage multiplier is a specialized rectifier circuit producing…
If the output of a shift register is fed back to the input. a ring…
The circuit in the previous section is not a very practical one. In…
Capacitors do not have a stable “resistance” as conductors…
Don’t just sit there! Build something!! Learning to mathematically…
Early in my explorations of electricity, I came across a length of…
Shaded Pole Induction Motor An easy way to provide starting torque to…
The jobs of electronics engineers and technicians frequently entail…
In this hands-on electronics experiment, build an audio amplifier using a vacuum tube (triode) and learn about voltage transformers, how to build a high-voltage DC power supply, and how to use a transformer for impedance matching.
The logic simplification examples that we have done so far could have…
Every meter impacts the circuit it is measuring to some extent, just…
Don’t just sit there! Build something!! Learning to analyze relay…
We can construct a simple logic functions for our hypothetical lamp…
Periodic table of chemical elements.
Input Voltages for Logic Gates Logic gate circuits are designed to…
To enter numbers in scientific notation into a hand calculator, there…
If two coils of wire are brought into close proximity with each other…
A very useful tool for observing rotating objects is a strobe light.…
So far, the phenomenon of resonance appears to be a useless curiosity,…
This tool calculates a capacitor's reactance for a given capacitance value and signal frequency.
An electrical connector, is an electro-mechanical device used to join…
