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Radio Circuits

Textbook

(a) Crystal radio. (b) Modulated RF at antenna. (c) Rectified RF at…

Free Space Path Loss Calculator

Tools

This calculator calculates the free space loss, given the distance, frequency, and gain, between two antennas.

Quantum Physics

Textbook

“I think it is safe to say that no one understands quantum…

Special-purpose Diodes

Textbook

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

Fundamentals of Radio Communication

Worksheets - Navigation

What does the acronym RF stand form, in reference to radio-related…

Design Project: Radio Transmitter

Worksheets - Navigation

Research the FCC (Federal Communication Commission) guidelines on…

Link Budget Calculator

Tools

A Link Budget puts into account all gains and losses a signal goes through in a system as it is transmitted. The calculator calculates the power of the received signal given amplifier and antenna gains, and medium loss.

High-Reliability Circuits

Worksheets - Navigation

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

Principles of Radio

Textbook

One of the more fascinating applications of electricity is in the…

Resonance

Worksheets - Navigation

The Q factor of a series inductive circuit is given by the following…

Simple Parallel (Tank Circuit) Resonance

Textbook

Resonance in a Tank Circuit A condition of resonance will be…

Dielectric Strengths for Insulators

Textbook

Dielectric strength in kilovolts per inch (kV/in): Material*…

Class A BJT Amplifiers

Worksheets - Navigation

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

Bipolar Junction Transistors in Active Mode

Worksheets - Navigation

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

Biasing Techniques (BJT)

Textbook

In the common-emitter section of this chapter, we saw a SPICE analysis…

Voltage, Current, and Resistance

Worksheets - Navigation

Voltage is commonly defined as “electrical pressure.” The unit of…

AC Negative Feedback OpAmp Circuits

Worksheets - Navigation

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

Temperature Coefficients of Resistance Table

Textbook

Temperature coefficient (α) per degree C: Material Element/Alloy…

Electron Tubes

Textbook

Cathode:   This is the electrode that is heated and emits the…

Single-phase Induction Motors

Textbook

A three-phase motor may be run from a single-phase power source.…

Safe Circuit Design

Textbook

As we saw earlier, a power system with no secure connection to earth…

Current Mirror BJTs

Textbook

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

Microstrip Crosstalk Calculator

Tools

This tool is designed to calculate cross-talk coefficient and coupled voltage for a microstrip.

Batteries

Worksheets - Navigation

If I wanted to build a battery-powered electric drill, would it be…

Practical Considerations - Batteries

Textbook

When connecting batteries together to form larger “banks”…

Precision Voltage Follower

Textbook

PARTS AND MATERIALS Operational amplifier, model 1458 or 353…

Diode Switching Circuits

Textbook

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

Gate Universality

Textbook

NAND and NOR gates possess a special property: they are universal.…

The P-N Junction

Textbook

If a block of P-type semiconductor is placed in contact with a block…