Explain the operation of this “H-bridge” motor control circuit: At…
A tool designed to convert between units of torque
Don’t just sit there! Build something!! Learning to mathematically…
Don’t just sit there! Build something!! Learning to mathematically…
Solid-state switching circuits usually keep their constituent…
Most AC motors are induction motors. Induction motors are favored due…
Normally, the rotor windings of a wound rotor induction motor are…
The variable reluctance motor is based on the principle that an…
Generators used in battery-charging systems must be regulated so as to…
If an electric current is passed through this wire, which direction…
As an electric current is passed through a coil of wire, it creates a…
Just as devices have been made to measure certain physical quantities…
At first it may seem pointless to have the four buffer gates following…
PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…
Brushless DC motors were developed from conventional brushed DC motors…
Most students of electricity begin their study with what is known as…
A three-phase motor may be run from a single-phase power source.…
Charles Proteus Steinmetz’s first job after arriving in America…
AC Motors Perhaps the most important benefit of polyphase AC power…
Shaded Pole Induction Motor An easy way to provide starting torque to…
Explain how an ohmmeter is able to measure the resistance of a…
Suppose we altered our basic open-collector inverter circuit, adding a…
Also known as the stairstep-ramp, or simply counter A/D converter,…
PARTS AND MATERIALS Two 6-volt batteries Four NPN…
Don’t just sit there! Build something!! Learning to mathematically…
PARTS AND MATERIALS Four 6 volt batteries Zener diode, 12 volt—type…
Don’t just sit there! Build something!! Learning to mathematically…
Since transformers are essentially AC devices, we need to be aware of…
Don’t just sit there! Build something!! Learning to mathematically…
An electric current through a conductor will produce a magnetic field…
Single Phase Synchronous Motors Single-phase synchronous motors are…
Don’t just sit there! Build something!! Learning to mathematically…
The metric system, besides being a collection of measurement units for…
Parts and Materials Operational amplifier, model 1458 or 353…
PARTS AND MATERIALS 6-volt battery Electromagnet made from experiment…
Define the following terms: energy, work, and power.
A calculator for computing the gain and output voltage of an operational amplifier
Identify the type of logic gate shown in this schematic diagram, and…
PARTS AND MATERIALS 6-volt battery Magnetic compass Small permanent…
Explain how an ohmmeter is able to measure the resistance of a…
Brushless DC motors were developed from conventional brushed DC motors…
PARTS AND MATERIALS One NPN transistor—model 2N2222 or 2N3403…
Counting practice: count from zero to thirty-one in binary, octal, and…
PARTS AND MATERIALS One large potato One lemon (optional) Strip of…
Remember that vectors are mathematical objects just like numbers on a…
Don’t just sit there! Build something!! Learning to mathematically…
If some percentage of an amplifier’s output signal is connected…
Capacitors, like all electrical components, have limitations that must…
What, exactly, is an arbitrary waveform generator, and for what…
Three-phase Wye(Y) Connection Initially, we explored the idea of…
Before the advent of solid-state logic circuits, logical control…
Note, Q3 and Q4 in Figure below are complementary, NPN and PNP…
Identify which trigonometric functions (sine, cosine, or tangent) are…
PARTS AND MATERIALS Two NPN transistors—models 2N2222 or…
Phase shift oscillator. R1C1, R2C2, and R3C3 each provide 60o of…
The invention of the bipolar transistor in 1948 ushered in a…
Shockley Diodes and Silicon Controlled Rectifiers (SCRs) Shockley…
It is fairly important to use large value resistors (10 MΩ works…
