Categories

Convert MCD to Lumens

Tools

This calculator is useful for calculating the luminous flux for LEDs where the angle is known.

Simple Combination Lock

Textbook

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

CMOS 555 Long Duration Minimum Parts Red LED Flasher

Textbook

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

LED Resistor Calculator

Tools

An LED resistance calculator is perfect for when you have a single LED and need to know which resistor you should use.

Programmable Logic Controllers (PLC)

Textbook

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

Karnaugh Mapping

Worksheets - Optoelectronics

Identify each of these logic gates by name, and complete their…

Special-purpose Diodes

Textbook

Schottky diodes Schottky diodes are constructed of a metal-to-N…

7-segment Display

Textbook

PARTS AND MATERIALS 4511 BCD-to-7seg latch/decoder/driver (Radio…

CMOS 555 Long Duration Flyback LED Flasher

Textbook

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

LED Sequencer

Textbook

PARTS AND MATERIALS 4017 decade counter/divider (Radio Shack catalog…

Optoelectronic Devices

Worksheets - Optoelectronics

In this circuit, the electric motor is supposed to turn on whenever…

Transistor as a Switch

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN transistor—models…

CMOS 555 Long Duration Red LED Flasher

Textbook

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

CMOS 555 Long Duration Blue LED Flasher

Textbook

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

Digital Display Circuits

Worksheets - Optoelectronics

What is the purpose of a seven-segment decoder circuit? What is a…

Display Tubes

Textbook

In addition to performing tasks of amplification and switching, tubes…

Design Project: LED Stroboscope

Worksheets - Optoelectronics

A technician uses a stroboscope to “freeze” the rotation of a…

Measurements of AC Magnitude

Textbook

So far we know that AC voltage alternates in polarity and AC current…

Phase-Locked Loops

Worksheets - Optoelectronics

This is a schematic for a simple VCO: The oscillator is of the RC…

Mutual Inductance

Textbook

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

Averager and Summer Circuits

Textbook

If we take three equal resistors and connect one end of each to a…

Rheostat Range Limiting

Textbook

PARTS AND MATERIALS Several 10 kΩ resistors One 10 kΩ…

Why L/R and not LR?

Textbook

Learn About L/R Time Constants It is often perplexing to new students…

Switch Contact Design

Textbook

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

Capacitor Quirks

Textbook

As with inductors, the ideal capacitor is a purely reactive device,…

T-Match Impedance Matching Circuits

Tools

A tool designed to compute the values to be used in a T-match Impedance Circuit

A Binary Adder

Textbook

Suppose we wanted to build a device that could add two binary bits…

Universal Shift Registers: Parallel-in, Parallel-out

Textbook

The purpose of the parallel-in/ parallel-out shift register is to…

Using Multiple Combinational Circuits

Textbook

As an example of using several circuits together, we are going to make…

Algebraic Equation Manipulation for Electric Circuits

Worksheets - Optoelectronics

The electrical resistance of a conductor at any temperature may be…

Impedance

Worksheets - Optoelectronics

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

Diode Switching Circuits

Textbook

Diodes can perform switching and digital logic operations. Forward and…

Half-Adder

Textbook

As a first example of useful combinational logic, let’s build a…

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

Worksheets - Optoelectronics

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

CMOS Logic Gates

Worksheets - Optoelectronics

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

Minterm vs Maxterm Solution

Textbook

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

Design Project: Signal Generator

Worksheets - Optoelectronics

Explain the principle of operation for the particular integrated…

Temperature Coefficient of Resistance

Textbook

You might have noticed on the table for specific resistances that all…

The Common-gate Amplifier (IGFET)

Textbook

Bandpass Filter Calculator

Tools

This calculates values of the inductance, capacitance of an inductor and capacitor used in a Butterworth LC bandpass filter.

Ohm’s Law Calculator

Tools

Calculate circuit parameters using Ohm's Law

Negative Feedback

Textbook

If we connect the output of an op-amp to its inverting input and apply…

Sensitive Audio Detector

Textbook

PARTS AND MATERIALS High-quality “closed-cup” audio headphones…

Programmable Logic Technology

Worksheets - Optoelectronics

Define the following acronyms as they apply to digital logic circuits:…

Power Supply Circuits

Textbook

There are three major kinds of power supplies: unregulated (also…

Current Divider Circuits

Worksheets - Optoelectronics

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

Inductors

Textbook

Active Filters

Worksheets - Optoelectronics

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

Power Conversion Circuits

Worksheets - Optoelectronics

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

Peak Voltage Calculator

Tools

The peak voltage calculator calculates peak voltage values from the peak-to-peak voltage, RMS voltage, or average voltage.

Common Derivatives

Textbook

Battery Ratings

Textbook

Because batteries create current flow in a circuit by exchanging…

Voltmeter Design

Worksheets - Optoelectronics

Suppose I were about to measure an unknown voltage with a manual-range…

Regulated Power Sources

Worksheets - Optoelectronics

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

Potentiometer as a Voltage Divider

Textbook

PARTS AND MATERIALS Two 6-volt batteries Carbon pencil “lead” for…

Transformer—Power Supply

Textbook

PARTS AND MATERIALS Power transformer, 120VAC step-down to 12VAC,…

Conductors, Insulators, and Electron Flow

Textbook

The electrons of different types of atoms have different degrees of…