All About Contactors When a relay is used to switch a large amount of…
In this hands-on electronics experiment, you will use a potentiometer as a variable resistor to control the speed of a motor and learn how to connect a potentiometer as a rheostat.
In this hands-on electronics experiment, build a multiple LED flasher and learn how to use inductive flyback to generate a voltage pulse that is greater than the supply voltage.
Electromechanical watt-hour meters use an aluminum disk that is spun…
Stepper Motor vs Servo Motor A stepper motor is a…
It is sometimes said regarding electrical safety that, Ït’s not the…
As an electric current is passed through a coil of wire, it creates a…
How is it possible to electrically measure the torque output by a…
Our exploration of thyristors begins with a device called the…
Standing waves at the resonant frequency points of an open- or…
What, exactly, is necessary to establish electrical continuity between…
In Millman’s Theorem, the circuit is re-drawn as a parallel…
Bipolar transistors are constructed of a three-layer semiconductor…
A handy all-in-one tool for reading resistor color code values for a 4 band resistor, 5 band resistor, or 6 band resistor.
Testing a JFET with a multimeter might seem to be a relatively easy…
As we saw earlier, a power system with no secure connection to earth…
Counting practice: count from zero to thirty-one in binary, octal, and…
In this hands-on semiconductor electronics experiment, use an LED as a light-sensitive photodetector and learn how to use a bipolar transistor in a common-emitter amplifier configuration.
Since complex numbers are legitimate mathematical entities, just like…
In this hands-on electronics experiment, build a red LED flasher with a transistor drive to control the current and learn how to use transistors to provide current gain and how to limit LED current.
A multiplexer, abbreviated mux, is a device that has multiple inputs…
The node voltage method of DC network analysis solves for unknown…
Power Equation of Ohm’s Law and Joule’s Law …
The Q factor of a series inductive circuit is given by the following…
There’s a sure way to calculate any of the values in a reactive…
One of the more advanced ADC technologies is the so-called…
Remember that vectors are mathematical objects just like numbers on a…
What Is an XOR Gate? One element conspicuously missing from the set of…
Radio waves are comprised of oscillating electric and magnetic fields,…
The concept and measurement units of resistance are most often used…
In this series of hands-on electronics experiments, you will build direct current (DC) circuits and learn fundamental electrical engineering circuit concepts.
RELATED WORKSHEETS: Calculus for Electric Circuits…
Varicap or varactor diodes A variable capacitance diode is known as a…
Capacitors do not have a stable “resistance” as conductors…
Let’s analyze a simple series circuit and determine the voltage…
In this hands-on AC electronics experiment, you will use an AC voltage source connected to speakers to learn about sound waves and the foundational principle used in noise cancelling headphones.
Contributors to this chapter are listed in chronological order of…
The smaller the cross-sectional area of any given wire, the greater…
This calculator determines the wavelength of a signal given the frequency and dielectric constant.
Although transistor switching circuits operate without bias, it is…
In this motor control circuit, how would you ensure that there is no…
This calculator determines the bias and feedback of resistors for a non-inverting Op-Amp
Charles Proteus Steinmetz’s first job after arriving in America…
Why learn about Karnaugh maps? The Karnaugh map, like Boolean…
Calculate the voltage output by the secondary winding of a transformer…
In this hands-on electronics experiment, build and test a 2-input digital NAND gate with LED indicators and learn to read pinout diagrams, power a digital IC, connect unused inputs and outputs, and use pulldown resistors.
If vectors with uncommon angles are added, their magnitudes (lengths)…
