A DIY guide to designing and building transistor radios

Create sophisticated transistor radios that are inexpensive yet highly efficient. Build Your Own Transistor Radios: A Hobbyist’s Guide to High-Performance and Low-Powered Radio Circuits offers complete projects with detailed schematics and insights on how the radios were designed. Learn how to choose components, construct the different types of radios, and troubleshoot your work. Digging deeper, this practical resource shows you how to engineer innovative devices by experimenting with and radically improving existing designs.

The role of the temperature controller is to measure the value on the thermometer, compare it to the set point and calculate the amount of time the hot water solenoid valve should remain switched on to maintain a constant temperature. How accurately we need to control the temperature will also determine the type of temperature controller we have to use.

QRP continues to be one of the more active segments of the amateur radio hobby. Different people are drawn to QRP for different reasons but, for many, part of the fun is in building and learning. The oscilloscope is an affordable and useful tool to helping learn more about how (or if) your QRP transmitter is working. Because of that, the questions, "Should I buy an oscilloscope?" or, even more often, "I just bought an oscilloscope, what can I use it for?" frequently come up.

Уникальный источник справочной информации, который может быть использован от начала до конца конструкторского проекта для облегчения выбора подходящей техники ЖК-адресации для данного приложения.

Join the Raspberry revolution with these fun and easy Pi projects. The Raspberry Pi has opened up a whole new world of innovation for everyone from hardware hackers and programmers to students, hobbyists, engineers, and beyond. Featuring a variety of hands–on projects, this easy–to–understand guide walks you through every step of the design process and will have you creating like a Raspberry Pi pro in no time. You ll learn how to prepare your workspace, assemble the necessary tools, work with test equipment, and find your way around the Raspberry Pi before moving on to a series of fun, lively projects that brings some power to your plain ol Pi.

Getting Started with CNC is the definitive introduction to working with affordable desktop and benchtop CNCs, written by the creator of the popular open hardware CNC, the Shapeoko. Accessible 3D printing introduced the masses to computer-controlled additive fabrication. But the flip side of that is subtractive fabrication: instead of adding material to create a shape like a 3D printer does, a CNC starts with a solid piece of material and takes away from it.

How to interface several LCD's to a Raspberry Pi using only Python.

A few years ago I wrote a book entitled “Arduino LCD Projects”. I have been working on writing a similar LCD projects book for the Raspberry Pi for a while. However getting LCD’s to work with the Raspberry Pi has not turned out to be that easy to do. There is no easy reference source, there are many varying standards, and there is required software that has numerous dependencies. In this book we will be using Python and the only dependency is that SPI be enabled.

Практикум дает подробное представление о схемах как графических конструкторских документах, требованиях к их выполнению и оформлению в соответствии с седьмой классификационной группой ЕСКД. Приведены термины и определения, общие для всех схем, виды и типы схем, правила их выполнения основные сведения об электрических схемах различных типов.

Create the next generation of autonomous Androids!

Construct self-governing 'droids that display physiologically correct behaviors. Co-written by experts in the fields of robotics, artificial intelligence, and medicine, Androids: Build Your Own Lifelike Robots features low-cost DIY projects that translate human physiology into cybernetics. Teach your creations to maneuver with an arsenal of behaviors, respond to stimuli, talk, and listen. This practical, inventive guide even shows how to realistically simulate emotion and aging in your robots.

В Учебном пособии для вузов изложены основы теории расчета силовых трансформаторов с плоскими и пространственными магнитными системами из холоднокатаной текстурированной электротехнической стали и обмотками из медного и алюминиевого провода с масляным и воздушным охлаждением.