All About Circuits

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Voltmeter Impact on Measured Circuit

Voltmeter Impact on Measured Circuit

Every meter impacts the circuit it is measuring to some extent, just…


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Pressure Unit Conversion Calculator

Pressure Unit Conversion Calculator

This calculator will convert pressure values to ten different standard units for pressure.


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Synchronous Motors

Synchronous Motors

Single Phase Synchronous Motors Single-phase synchronous motors are…


Textbook

DC Lab - Potentiometer as a Rheostat

DC Lab - Potentiometer as a Rheostat

In this hands-on electronics experiment, you will use a potentiometer as a variable resistor to control the speed of a motor and learn how to connect a potentiometer as a rheostat.


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Bipolar Junction Transistors

Bipolar Junction Transistors

The bipolar junction transistor (BJT) was named because its operation…


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DC Lab - Thermoelectricity

DC Lab - Thermoelectricity

In this hands-on electronics experiment, you will build a thermocouple to measure temperature changes and learn about the Seebeck effect.


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Strain Gauges

Strain Gauges

If a strip of conductive metal is stretched, it will become skinnier…


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Switches, Process Actuated

Switches, Process Actuated

It is very important to keep in mind that the “normal”…


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Si Lab - JFET Switching Circuit and Static Electricity Sensor

Si Lab - JFET Switching Circuit and Static Electricity Sensor

In this hands-on semiconductor electronics experiment, use a junction field-effect transistor (JFET) to build a sensitive switching circuit and learn about JFET current gain.


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Si Lab - Light Sensor (LED Photodetector)

Si Lab - Light Sensor (LED Photodetector)

In this hands-on semiconductor electronics experiment, use an LED as a light-sensitive photodetector and learn how to use a bipolar transistor in a common-emitter amplifier configuration.


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Voltage Divider Calculator

Voltage Divider Calculator

The voltage divider is a circuit used to create a voltage less than or equal to the input voltage.


Tools

Physiological Effects of Electricity

Physiological Effects of Electricity

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


Textbook

DC Lab - Sensitive Voltage Detector With Audio Output

DC Lab - Sensitive Voltage Detector With Audio Output

In this hands-on electronics experiment, you will construct a voltage detector with adjustable sensitivity and audio output, and you will learn a method for detecting small electrical signals without an oscilloscope.


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Permanent Magnets

Permanent Magnets

Centuries ago, it was discovered that certain types of mineral rock…


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Differentiator and Integrator Circuits

Differentiator and Integrator Circuits

By introducing electrical reactance into the feedback loops of an…


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AC Lab - Sensing AC Magnetic Fields

AC Lab - Sensing AC Magnetic Fields

In this hands-on AC electronics experiment, you will sense AC magnetic fields using a simple wire coil and learn about AC signal coupling, orientation effects, and the impact of shielding using different materials.


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Building a Differential Amplifier

Building a Differential Amplifier

Differential Op-Amp Circuits An op-amp with no feedback is already a…


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Lorentz Force Calculator

Lorentz Force Calculator

This calculator will determine the combined Lorentz force exerted on a charged particle moving through both an electric field and a magnetic field.


Tools

AC Instrumentation Transducers

AC Instrumentation Transducers

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


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Look-up Tables

Look-up Tables

Having learned about digital memory devices in the last chapter, we…


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Intro Lab - A Simple Lighting Circuit

Intro Lab - A Simple Lighting Circuit

In this hands-on electronics experiment, you will build a battery-operated circuit with a light and learn about open and short circuit failures.


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A Binary Adder

A Binary Adder

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


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Single-phase Power Systems

Single-phase Power Systems

Single phase power system schematic diagram shows little about the…


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DC Circuit Equations and Laws

DC Circuit Equations and Laws

Power Equation of Ohm’s Law and Joule’s Law    …


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Metric Prefix Conversions

Metric Prefix Conversions

To express a quantity in a different metric prefix from how it was…


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Operational Amplifier Models

Operational Amplifier Models

While mention of operational amplifiers typically provokes visions of…


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Contact “Normal” State and Make/Break Sequence

Contact “Normal” State and Make/Break Sequence

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


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Polarity of voltage drops

Polarity of voltage drops

When using conventional current flow, we can trace the direction of…


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Design Project: Audio Power Amplifier

Design Project: Audio Power Amplifier

Explain how the microphone in your amplifier works. How, exactly, does…


Worksheets - Automotive

Logic Simplification With Karnaugh Maps

Logic Simplification With Karnaugh Maps

The logic simplification examples that we have done so far could have…


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Input and Output Coupling

Input and Output Coupling

To overcome the challenge of creating necessary DC bias voltage for an…


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Resistance

Resistance

The circuit in the previous section is not a very practical one. In…


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Voltage/Current Converter OpAmp Circuits

Voltage/Current Converter OpAmp Circuits

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


Worksheets - Automotive

Design Project: Arbitrary Waveform Generator

Design Project: Arbitrary Waveform Generator

What, exactly, is an arbitrary waveform generator, and for what…


Worksheets - Automotive

Power in Electric Circuits

Power in Electric Circuits

In addition to voltage and current, there is another important…


Textbook

Motor Control Circuits

Motor Control Circuits

The interlock contacts installed in the previous section’s motor…


Textbook

Complex Voltage and Current Calculations

Complex Voltage and Current Calculations

There are circumstances when you may need to analyze a DC reactive…


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Copper Wire Ampacity Table

Copper Wire Ampacity Table

Ampacities of copper wire, in free air at 30o C: INSULATION TYPE…


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555 Lab - Blue LED Flasher With Voltage Doubler

555 Lab - Blue LED Flasher With Voltage Doubler

In this hands-on electronics experiment, build a blue LED flasher using a 555 timer and learn the basic theory of a voltage doubler using a transistor switch and a capacitor.


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AC Lab - Using a Transformer to Build a 12 VAC Power Supply

AC Lab - Using a Transformer to Build a 12 VAC Power Supply

In this hands-on AC electronics experiment, build a 12 V alternating current (AC) power supply using a step-down transformer and learn about transformer operation and the purpose of tapped windings.


Textbook