Charles Proteus Steinmetz’s first job after arriving in America…
If an electric current is passed through this wire, which direction…
Don’t just sit there! Build something!! Learning to analyze digital…
Don’t just sit there! Build something!! Learning to analyze digital…
Electromechanical watt-hour meters use an aluminum disk that is spun…
Stepper Motor vs Servo Motor A stepper motor is a…
Most students of electricity begin their study with what is known as…
AC Motors Perhaps the most important benefit of polyphase AC power…
A calculator for computing several parameters needed in the design of a flyback switch mode regulator
Explain the operation of this “H-bridge” motor control circuit: At…
PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF…
A tool designed to convert between units of torque
All About Contactors When a relay is used to switch a large amount of…
Generators used in battery-charging systems must be regulated so as to…
A very useful tool for observing rotating objects is a strobe light.…
After the introduction of the DC electrical distribution system by…
Don’t just sit there! Build something!! Learning to mathematically…
Just as devices have been made to measure certain physical quantities…
Most AC motors are induction motors. Induction motors are favored due…
Brushless DC motors were developed from conventional brushed DC motors…
Computerized Fourier analysis, particularly in the form of the FFT…
A demultiplexer, sometimes abbreviated dmux, is a circuit that has one…
What is Conductance? In the study of DC circuits, the student of…
Don’t just sit there! Build something!! Learning to mathematically…
Specific resistance at 20o C: Material Element/Alloy ohm-cmil/ft…
Suppose we wished to measure the resistance of some component located…
Remember that vectors are mathematical objects just like numbers on a…
The Inductance Formula Wheeler’s formulas for…
Unijunction transistor: Although a unijunction transistor is not a…
The singular reason for learning and using the binary numeration…
Counting practice: count from zero to thirty-one in binary, octal, and…
So far, we’ve explored tubes which are totally…
Though it may seem strange to cover the elementary topic of electrical…
PARTS AND MATERIALS Two 6 volt batteries Capacitor, 0.1 µF…
PARTS AND MATERIALS 555 timer IC (Radio Shack catalog # 276-1723) One…
Suppose we had a simple one-battery, one-lamp circuit controlled by a…
Though mechanical ohmmeter (resistance meter) designs are rarely used…
Feedback is a fascinating engineering principle. It can turn a rather…
If I needed to describe the distance between two cities, I could…
This calculator computes the power received by an antenna using Friis formula
The bipolar junction transistor (BJT) was named because its operation…
As we saw with DC measurement circuits, the circuit configuration…
The Inductance Formula Wheeler’s formulas for…
What are Time-Delay Relays? Some relays are constructed with a kind of…
PARTS AND MATERIALS Two 6-volt batteries One NPN…
Input Voltages for Logic Gates Logic gate circuits are designed to…
Up to this point we have considered logic reduction problems where…
A third variation on the counter-DAC-based converter theme is, in my…
PARTS AND MATERIALS 6 volt battery Power transformer, 120VAC step-down…
Three-Phase Alternator Let’s take the three-phase alternator…
The purpose of the parallel-in/ parallel-out shift register is to take…
How to Create a Band-stop Filter? Also called band-elimination,…
PARTS AND MATERIALS 4011 quad NAND gate (Radio Shack catalog #…
In the last section, we saw how the 3rd harmonic and all of its…
The fourth example has A partially overlapping B. Though, we will…
We’ve already seen one example of a monostable multivibrator in…
Though it may seem strange to cover the elementary topic of electrical…
When students first see the parallel resistance equation, the natural…
Don’t just sit there! Build something!! Learning to mathematically…
Ohm’s Law also makes intuitive sense if you apply it to the…