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How to Build a Current Mirror Circuit

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PARTS AND MATERIALS   Two NPN transistors—models 2N2222 or…

Review of R, X, and Z (Resistance, Reactance and Impedance)

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Before we begin to explore the effects of resistors, inductors, and…

Rate-of-change Indicator

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PARTS AND MATERIALS Two 6 volt batteries Capacitor, 0.1 µF…

Thyristor Application Circuits

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

Sensitive Voltage Detector

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

Capacitor Sizing Equation

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Capacitance Formula     Permittivity of Dielectric  …

Inductor-Capacitor “tank” Circuit

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PARTS AND MATERIALS Oscilloscope Assortment of non-polarized…

Finite-state Machine

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Feedback is a fascinating engineering principle. It can turn a rather…

Potentiometer as a Voltage Divider

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PARTS AND MATERIALS Two 6-volt batteries Carbon pencil…

Synchronous Counters

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

A Very Simple Computer

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PARTS AND MATERIALS Three batteries, each one with a different voltage…

Polyphase Power Systems

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Explain the difference between a balanced polyphase system and an…

Node Voltage Method

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The node voltage method of analysis solves for unknown voltages at…

The Silicon-Controlled Switch (SCS)

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If we take the equivalent circuit of an SCR and add another external…

AC Circuit Equations

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Inductive Reactance     Capacitive Reactance    …

AC Power

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

Applications of Resonance

Textbook

So far, the phenomenon of resonance appears to be a useless curiosity,…

Shift Registers: Serial-in, Parallel-out (SIPO) Conversion

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A serial-in, parallel-out shift register is similar to the serial-in,…

Introduction to Combinational Logic Functions

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The term “combinational” comes to us from mathematics. In…

Voltage Divider

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PARTS AND MATERIALS Calculator (or pencil and paper for doing…