Categories

DC Motor Control Circuits

Worksheets - MEMS

How is it possible to electrically measure the torque output by a…

Switch Contact Design

Textbook

A switch can be constructed with any mechanism bringing two conductors…

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

Bipolar junction transistors (Also known as BJTs) can be used as an…

Monostable Multivibrators

Textbook

We’ve already seen one example of a monostable multivibrator in…

Latch Circuits

Worksheets - MEMS

What do you think this logic buffer gate will do, with the output…

Resonance

Worksheets - MEMS

The Q factor of a series inductive circuit is given by the following…

Simple Combination Lock

Textbook

PARTS AND MATERIALS 4001 quad NOR gate (Radio Shack catalog #…

AC Motor Control Circuits

Worksheets - MEMS

Perhaps the most challenging aspect of interpreting ladder diagrams,…

Bipolar Junction Transistors as Switches

Worksheets - MEMS

Solid-state switching circuits usually keep their constituent…

AC Bridge Circuits

Textbook

As we saw with DC measurement circuits, the circuit configuration…

Synchronous Condenser

Textbook

Synchronous motors load the power line with a leading power factor.…

Impedance Matching With Transformers

Worksheets - MEMS

Suppose you were to take a 3 kW electric heater rated for 240 VAC and…

Contactors

Textbook

All About Contactors When a relay is used to switch a large amount of…

Vacuum Tube Audio Amplifier

Textbook

PARTS AND MATERIALS One 12AX7 dual triode vacuum tube Two power…

The S-R Latch

Textbook

A bistable multivibrator has two stable states, as indicated by the…

What is Alternating Current (AC)?

Textbook

Most students of electricity begin their study with what is known as…

Switches, Hand Actuated

Textbook

A switch is an electrical component that can “make” or…

Commutating Diode

Textbook

PARTS AND MATERIALS 6 volt battery Power transformer, 120VAC step-down…

The Junction Field-effect Transistor (JFET) as a Switch

Textbook

Like its bipolar cousin, the field-effect transistor may be used as an…

Flip-Flop Circuits

Worksheets - MEMS

Don’t just sit there! Build something!! Learning to analyze digital…

Monostable Multivibrators

Textbook

We’ve already seen one example of a monostable multivibrator in…

Other Specialized Motors

Textbook

Shaded Pole Induction Motor An easy way to provide starting torque to…

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Insulated Gate Bipolar Transistors

Worksheets - MEMS

What is an Insulated Gate Bipolar Transistor (IGBT), and what…

Solid-state Relays

Textbook

Limitations of Electromechanical Relays As versatile as…

Network Protocols

Textbook

Aside from the issues of the physical network (signal types and…

AC Bridge Circuits

Textbook

As we saw with DC measurement circuits, the circuit configuration…

Phase Rotation

Textbook

Three-Phase Alternator Let’s take the three-phase alternator…

R, L and C Summary

Textbook

With the notable exception of calculations for power (P), all AC…

Decibel Calculator

Tools

This calculator will convert voltage or power gains into decibels. Enter one of the three values and the calculator will output the other two.

T-Pad Attenuator Calculator

Tools

This calculator helps you determine the values of the resistors R1 and R2 to be used for a T-pad attenuator.

Mutual Inductors

Textbook

Mutual inductors are inductors that capitalize the effect of mutual…

Physiological Effects of Electricity

Textbook

Most of us have experienced some form of electric “shock,”…

Contact “Bounce”

Textbook

When a switch is actuated and contacts touch one another under the…

Mutual Inductance

Textbook

If two coils of wire are brought into close proximity with each other…

Successive Approximation ADC

Textbook

One method of addressing the digital ramp ADC’s shortcomings is…

Ohm’s Law Calculator

Tools

Calculate circuit parameters using Ohm's Law

LC Resonant Frequency Calculator

Tools

A circuit with an inductor (L) and capacitor (C) connected in parallel or series will have a resonant frequency at which their impedances are equal. Given two of the three values—inductance, capacitance, or resonant frequency—this tool will calculate the missing third variable.

Digital Signals and Gates

Textbook

While the binary numeration system is an interesting mathematical…

Semiconductor Devices in SPICE

Textbook

The SPICE (Simulation Program, Integrated Circuit Emphesis)…

IC Fabrication and Packaging

Worksheets - MEMS

What does it mean if an integrated circuit comes in DIP form? What…

Switches, Electrically Actuated (Relays)

Textbook

The structure behind ladder logic is based on the electrical ladder…

Induction Motor

Textbook

PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF…

Capacitors and Calculus

Textbook

Capacitors do not have a stable “resistance” as conductors…

Parallel Resistor-Capacitor Circuits

Textbook

Using the same value components in our series example circuit, we will…