Categories

DC Motor Control Circuits

Worksheets - MEMS

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

Resonance

Worksheets - MEMS

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

Switch Contact Design

Textbook

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

Monostable Multivibrators

Textbook

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

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

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

Latch Circuits

Worksheets - MEMS

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

Impedance Matching With Transformers

Worksheets - MEMS

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

Simple Combination Lock

Textbook

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

Flyback Switch Mode Regulator Calculator

Tools

A calculator for computing several parameters needed in the design of a flyback switch mode regulator

The J-K Flip-Flop

Textbook

Another variation on a theme of bistable multivibrators is the J-K…

Step-up, Step-down, and Isolation Transformers

Worksheets - MEMS

Calculate the voltage output by the secondary winding of a transformer…

Full-wave Center-tap Rectifier

Textbook

PARTS AND MATERIALS Low-voltage AC power supply (6-volt output) Two…

AC Instrumentation Transducers

Textbook

Just as devices have been made to measure certain physical quantities…

Tesla Polyphase Induction Motors

Textbook

Most AC motors are induction motors. Induction motors are favored due…

Likely Failures in Unproven Systems

Textbook

“All men are liable to error;” —John Locke Whereas…

Latch Circuits

Worksheets - MEMS

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

CMOS 555 Long Duration Flyback LED Flasher

Textbook

PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

The S-R Latch

Textbook

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

AC Motor Theory

Worksheets - MEMS

Electromechanical watt-hour meters use an aluminum disk that is spun…

Contact “Normal” State and Make/Break Sequence

Textbook

Any kind of switch contact can be designed so that the contacts…

“Ladder” Diagrams

Textbook

Ladder diagrams are specialized schematics commonly used to document…

Contactors

Textbook

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

Time-delay Relays

Textbook

What are Time-Delay Relays? Some relays are constructed with a kind of…

Synchronous Condenser

Textbook

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

AC Bridge Circuits

Textbook

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

Time Constant Circuits

Worksheets - MEMS

Generally speaking, how many “time constants” worth of time does…

Variable Inductor

Textbook

PARTS AND MATERIALS Paper tube, from a toilet-paper roll Bar of iron…

AC Motor Control Circuits

Worksheets - MEMS

Perhaps the most challenging aspect of interpreting ladder diagrams,…

RF Power Conversion Calculator

Tools

A tool designed to convert RF power from watts to decibels and vice versa

Hysteresis

Textbook

Thyristors are a class of semiconductor components exhibiting…

The “Buffer” Gate

Textbook

If we were to connect two inverter gates together so that the output…

Design Project: Telegraph System

Worksheets - MEMS

What voltage will you choose to use for each of the station batteries?

Characteristic Impedance

Worksheets - MEMS

Note the “50 ohm” rating printed on the jacket of the cable. What…

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

Impedance

Worksheets - MEMS

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

The Quadratic Formula

Textbook

Solving for x in a given polynomial equation “ax2 + bx + c…

Step-up, Step-down, and Isolation Transformers

Worksheets - MEMS

Calculate the voltage output by the secondary winding of a transformer…

Miscellaneous Diode Applications

Worksheets - MEMS

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

CMOS Logic Gates

Worksheets - MEMS

Counting practice: count from zero to thirty-one in binary, octal, and…

Four-Channel Audio Mixer

Worksheets - MEMS

A very common misconception students have about potentiometers is the…

Parallel Batteries

Textbook

PARTS AND MATERIALS Four 6-volt batteries 12-volt light bulb, 25 or 50…

Phase Rotation

Textbook

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

Advanced Electromagnetism and Electromagnetic Induction

Worksheets - MEMS

∫f(x) dx Calculus alert! Electronic power conversion circuits known…

AC Circuit Equations

Textbook

Inductive Reactance     Capacitive Reactance    …

Meter Check of a Diode

Textbook

The Functionality of Diode Polarity Being able to determine the…