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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This calculator is useful for calculating the luminous flux for LEDs where the angle is known.
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Don’t just sit there! Build something!! Learning to mathematically…
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A technician uses a stroboscope to “freeze” the rotation of a…
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Don’t just sit there! Build something!! Learning to mathematically…
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Don’t just sit there! Build something!! Learning to mathematically…
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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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Don’t just sit there! Build something!! Learning to mathematically…
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What does it mean for an object to have an electric charge? Give an…
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In this hands-on electronics experiment, you will build a red LED flasher and learn a useful application of the versatile 555 timer IC.
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What is the purpose of the switch shown in this schematic diagram?
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What is the purpose of a seven-segment decoder circuit? What is a…
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This series LED resistance calculator is perfect for when you have a single LED or a number of the same color of LEDs in series and need to know which resistor you should use.
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Schottky diodes Schottky diodes are constructed of a metal-to-N…
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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.
Textbook
In this hands-on electronics experiment, build a red LED flasher with a transistor drive to control the current and learn how to use transistors to provide current gain and how to limit LED current.
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If we were to express the series-connected DC voltages as phasors…
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Shown here is the schematic symbol for a resistor: What is the purpose…
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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.
Textbook
In this hands-on electronics experiment, you will connect batteries in parallel to power a light and learn the relationship between the individual battery currents and the total system current.
Textbook
There was some historic crude, but usable semiconductor…
Textbook
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Dielectric strength in kilovolts per inch (kV/in): Material*…
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This calculator is designed to compute the parameters required to design a Pi-Match Impedance Circuit
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Textbook
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.
Textbook
A very important measurement in many liquid chemical processes…
Textbook
The most important component of your voltmeter will be the…
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In addition to forward voltage drop (Vf) and peak inverse voltage…
Textbook
At first it may seem pointless to have the four buffer gates following…
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In this hands-on electronics experiment, build and test a 2-input digital NAND gate with LED indicators and learn to read pinout diagrams, power a digital IC, connect unused inputs and outputs, and use pulldown resistors.
Textbook
This calculator helps you compute the inductance of a wire loop.
Tools
The SPICE circuit simulation program provides for modeling diodes in…
Textbook
Note, Q3 and Q4 in the figure below are complementary, NPN and PNP…
Textbook
Because of their insulated gates, IGFETs of all types have extremely…
Textbook
In this hands-on electronics experiment, you will build a simple circuit that computes the average of voltages and learn about analog computers and their application.
Textbook
A peak detector is a series connection of a diode and a…
Textbook
No text on electrical metering could be called complete without a…
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In Millman’s Theorem, the circuit is re-drawn as a parallel…
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It is sometimes desirable to have circuits capable of selectively…
Textbook
If we examine a four-bit binary count sequence from 0000 to 1111, a…
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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.
Textbook
Write an equation describing the precise mathematical relationship…
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In this hands-on electronics experiment, build and test a 2-input digital NAND gate with LED indicators and learn to read pinout diagrams, power a digital IC, connect unused inputs and outputs, and use pulldown resistors.
Textbook
Dielectric strength in kilovolts per inch (kV/in): Material*…
Textbook
Explain how the microphone in your amplifier works. How, exactly, does…
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In this hands-on semiconductor electronics experiment, build a full-wave bridge rectifier using silicon diodes and learn some of this circuit's advantages and disadvantages.
Textbook
The atoms in insulating materials have very tightly-bound electrons,…
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Pure semiconductors are relatively good insulators as compared with…
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Any kind of switch contact can be designed so that the contacts…
Textbook
Given two lengths of metal wire, which one will have the least…
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RELATED WORKSHEETS: Calculus for Electric Circuits…
Textbook
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.
Textbook
Introduction This third volume of the book series Lessons In Electric…
Textbook
So far we know that AC voltage alternates in polarity and AC current…
Textbook
Constant Rule Rule of Sums Rule of…
Textbook
In this hands-on AC electronics experiment, build a variable conductor and learn the impact of a metal core placed inside an inductor coil has on the inductance.
Textbook
You might have been wondering how charges can continuously flow in a…
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This calculator helps you compute the inductance of a rectangle loop.
Tools
In this hands-on electronics experiment, you will examine the heat generated by resistors and maybe even make one smoke! Also, learn to calculate power dissipation using Joule's law and resistor power ratings.
Textbook
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