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Electromechanical Relay Logic

Electromechanical Relay Logic

In ladder logic symbolism, an electromechanical relay coil is shown as…


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Historical, Nonmechanical Memory Technologies

Historical, Nonmechanical Memory Technologies

Perhaps the most ingenious technique was that of the delay line. A…


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Edge-triggered Latches: Flip-Flops

Edge-triggered Latches: Flip-Flops

So far, we’ve studied both S-R and D latch circuits with enable…


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Stepper Motors

Stepper Motors

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


Worksheets - Processors

555 Lab - LED Flasher with Inductive Flyback

555 Lab - LED Flasher with Inductive Flyback

In this hands-on electronics experiment, build a multiple LED flasher and learn how to use inductive flyback to generate a voltage pulse that is greater than the supply voltage.


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Latch Circuits

Latch Circuits

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


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Digital Lab - 10-bit Flashing LED Sequencer

Digital Lab - 10-bit Flashing LED Sequencer

In this hands-on electronics experiment, build and test an automated circuit that sequentially flashes 10 LED, and learn about counters, frequency dividers, and switch debouncing.


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Programmable Logic Controllers (PLC)

Programmable Logic Controllers (PLC)

Before the advent of solid-state logic circuits, logical control…


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Digital Logic Signals

Digital Logic Signals

A rheostat (variable resistor) and a switch are both examples of…


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The S-R Latch

The S-R Latch

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


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CMOS Logic Gates

CMOS Logic Gates

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


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Digital Logic Functions

Digital Logic Functions

We can construct a simple logic functions for our hypothetical lamp…


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Memory Devices

Memory Devices

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


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Microprocessors

Microprocessors

Early computer science pioneers such as Alan Turing and John Von…


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Shift Registers: Serial-in, Serial-out

Shift Registers: Serial-in, Serial-out

Serial-in, serial-out shift registers delay data by one clock time for…


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Synchronous Counters

Synchronous Counters

What is a Synchronous Counter? A synchronous counter, in contrast to…


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Introduction to Digital Communication

Introduction to Digital Communication

In the design of large and complex digital systems, it is often…


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Ring Counters

Ring Counters

If the output of a shift register is fed back to the input. a ring…


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Multiplexers and Demultiplexers

Multiplexers and Demultiplexers

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


Worksheets - Processors

555 Timer Astable Oscillator Circuit

555 Timer Astable Oscillator Circuit

In an astable circuit, the output voltage alternates between VCC and 0 volts on a continuous basis. This calculator will help you design an oscillator using a 555 timer IC.


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Integrated Circuits

Integrated Circuits

  A Logic Gate is assigned as an elementary building block of…


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Successive Approximation ADC

Successive Approximation ADC

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


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Minterm vs Maxterm Solution

Minterm vs Maxterm Solution

So far we have been finding Sum-Of-Product (SOP) solutions to logic…


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Permissive and Interlock Circuits

Permissive and Interlock Circuits

A practical application of switch and relay logic is in control…


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Timer Circuits

Timer Circuits

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


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Oscillator Circuits

Oscillator Circuits

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


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Logic Signal Voltage Levels

Logic Signal Voltage Levels

Input Voltages for Logic Gates Logic gate circuits are designed to…


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Flash ADC

Flash ADC

Also called the parallel A/D converter, this circuit is the simplest…


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Basic Electromagnetic Relays

Basic Electromagnetic Relays

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


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Performance-Based Assessments for Digital Circuit Competencies

Performance-Based Assessments for Digital Circuit Competencies

(Template)


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Binary Addition

Binary Addition

The Rules of Binary Addition Adding binary numbers is a very simple…


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Digital Lab - 10-bit Flashing LED Sequencer

Digital Lab - 10-bit Flashing LED Sequencer

In this hands-on electronics experiment, build and test an automated circuit that sequentially flashes 10 LED, and learn about counters, frequency dividers, and switch debouncing.


Textbook

Introduction to Shift Registers

Introduction to Shift Registers

Shift registers, like counters, are a form of sequential…


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Modern Nonmechanical Memory

Modern Nonmechanical Memory

Now we can proceed to studying specific types of digital storage…


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Counters

Counters

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


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Analysis Techniques for Series Parallel Resistor Circuits

Analysis Techniques for Series Parallel Resistor Circuits

Guidelines to Series-Parallel Combination Circuit Analysis The goal of…


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Digital Lab - 7-segment LED Display

Digital Lab - 7-segment LED Display

In this hands-on electronics experiment, you will control a 7-segment binary-coded decimal (BCD) display and learn about active-low and active-high logic inputs.


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The “Buffer” Gate

The “Buffer” Gate

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


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Digital Logic Functions

Digital Logic Functions

We can construct a simple logic functions for our hypothetical lamp…


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Time-Delay Electromechanical Relays

Time-Delay Electromechanical Relays

What does the normal status of an electrical switch refer to?…


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Phasing

Phasing

Since transformers are essentially AC devices, we need to be aware of…


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Series-Parallel DC Circuits

Series-Parallel DC Circuits

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


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Wire Self Inductance Calculator

Wire Self Inductance Calculator

This calculator will help compute the inductance of a length of wire.


Tools

pH Measurement

pH Measurement

A very important measurement in many liquid chemical processes…


Textbook

Rules for Limits

Rules for Limits

    RELATED WORKSHEETS: Calculus for Electric Circuits…


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AC Power

AC Power

If a sinusoidal voltage is applied to an impedance with a phase angle…


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RF Power Ratio Conversion Calculator

RF Power Ratio Conversion Calculator

This tool is designed to convert power ratios to decibel


Tools

Microprocessor Programming

Microprocessor Programming

The “vocabulary” of instructions which any particular…


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Current Mirror BJTs

Current Mirror BJTs

Bipolar Junction Transistor or BJT Current Mirror An often-used…


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Bipolar Junction Transistors in Active Mode

Bipolar Junction Transistors in Active Mode

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


Worksheets - Processors

Capacitor Charge and Time Constant Calculator

Capacitor Charge and Time Constant Calculator

This calculator computes for the capacitor charge time and energy, given the supply voltage and the added series resistance.


Tools

555 Lab - Monostable Multivibrator (One-shot)

555 Lab - Monostable Multivibrator (One-shot)

In this hands-on electronics experiment, you will build a monostable multivibrator using a 555 timer IC and learn about RC time constant charging and how a one-shot timer operates.


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Ring Counters

Ring Counters

If the output of a shift register is fed back to the input. a ring…


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Vol VI. Credits

Vol VI. Credits

The following is a partial list of contributors to the current online…


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Positive Feedback

Positive Feedback

As we’ve seen, negative feedback is an incredibly useful…


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AC Resistor Circuits (Capacitive)

AC Resistor Circuits (Capacitive)

Pure resistive AC circuit: voltage and current are in phase.  …


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Trigonometric Equivalencies

Trigonometric Equivalencies


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Basic Troubleshooting Strategies

Basic Troubleshooting Strategies

A chandelier has five light bulbs in it, and one of them is not…


Worksheets - Processors

Introduction to Diodes And Rectifiers

Introduction to Diodes And Rectifiers

All About Diodes A diode is an electrical device allowing current to…


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Bit Grouping

Bit Grouping

The singular reason for learning and using the binary numeration…


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