PARTS AND MATERIALS One 12AX7 dual triode vacuum tube Two power…
Normally, the rotor windings of a wound rotor induction motor are…
Electromechanical watt-hour meters use an aluminum disk that is spun…
Just as devices have been made to measure certain physical quantities…
Don’t just sit there! Build something!! Learning to mathematically…
Project Parts and Materials Automotive alternator (one required, but…
Brushless DC motors were developed from conventional brushed DC motors…
All About Contactors When a relay is used to switch a large amount of…
Pulse Width Modulation (PWM) uses digital signals to control power…
Explain the operation of this “H-bridge” motor control circuit: At…
After the introduction of the DC electrical distribution system by…
Solid-state switching circuits usually keep their constituent…
Charles Proteus Steinmetz’s first job after arriving in America…
Most students of electricity begin their study with what is known as…
Most AC motors are induction motors. Induction motors are favored due…
Perhaps the most challenging aspect of interpreting ladder diagrams,…
The interlock contacts installed in the previous section’s motor…
How is it possible to electrically measure the torque output by a…
As an electric current is passed through a coil of wire, it creates a…
If an electric current is passed through this wire, which direction…
Don’t just sit there! Build something!! Learning to mathematically…
This chapter will cover the physics behind the operation of…
As an electric current is passed through a coil of wire, it creates a…
PARTS AND MATERIALS Four 6 volt batteries One capacitor, 100 µF…
This chapter explores the response of capacitors and inductors to…
This calculates the capacitance of a capacitor based on its charge, Q, and its voltage, V, according to the formula, C=Q/V.
So far, we’ve studied both S-R and D latch circuits with enable…
Don’t just sit there! Build something!! Learning to analyze digital…
PARTS AND MATERIALS Two NPN transistors—models 2N2222 or…
Once again, when building battery/resistor circuits, the student or…
There are many different types of power sources, and here some of the…
PARTS AND MATERIALS High-quality “closed-cup” audio…
Like its bipolar cousin, the field-effect transistor may be used as an…
PARTS AND MATERIALS 4011 quad NAND gate (Radio Shack catalog #…
Because of their insulated gates, IGFETs of all types have extremely…
Generally speaking, network analysis is any structured technique used…
This tool calculates the dimensions of the microstrip patch antenna given the desired operating frequency.
Most integrated circuits are digital, based on MOS (CMOS) transistors.…
A multiplexer, abbreviated mux, is a device that has multiple inputs…
PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…
