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Er zijn niet zoveel boeken te vinden over het ontwerpen en bouwen van zenders met een klein uitgangsvermogen. Dit boek beschrijft nauwkeurig de werking en bouw van maar liefst twintig audio- en videozender(tje)s. Daarmee biedt het aan de amateur-elektronicus, technicus, zendamateur en andere radio-enthousiasten het noodzakelijke materiaal om zich verder te bekwamen op dit gebied. Er wordt slechts weinig aandacht besteed aan de theorie, maar dat heeft een groot voordeel: ruim 300 pagina’s vol praktijk. De zenders, sommige eenvoudig, andere meer gecompliceerd, werden speciaal ontworpen voor het gebruik door amateurs. Ze werken tussen 150 kHz en 1300 MHz. De gebruikte techniek dateert vooral uit de jaren 90. Dit mag op het eerste gezicht een tekortkoming lijken, maar het is juist een extra argument voor publicatie. De technieken hebben zich inmiddels bewezen en er worden eenvoudige, goedkope en nog steeds goed verkrijgbare onderdelen gebruikt. Dit boek richt zich dus in de eerste plaats tot de potentiële gebruiker van HF-technieken, die er niet voor terugschrikt om dit soort schakelingen in elkaar te zetten. De schakelingen zijn probleemloos na te bouwen (nog een voordeel van zich bewezen technieken). Om dat te bereiken hebben de auteurs veel aandacht besteed aan: de testprocedures voor elke schakeling, de onderdelenlijst, instructies voor het vervaardigen van de spoelen en voor de afregeling. Bij de meeste schakelingen is bovendien een printontwerp afgedrukt. Naast zenders voor o.a. FM-stereo, AM, VHF-FM-amateur, R/C-TV, 40-m-CW-zender, 10-m-SSB, 2-m-NBFM, FM-video-link en amateur-TV vindt u in dit boek ook verwante schakelingen, zoals een down-converter voor 400, 900 en 1300 MHz en een HF-vermogensmeter.

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Principles, Systems, and Electronics This handbook provides a detailed study of the sensors and actuators at the heart of modern vehicle electronics. It begins with basic electrical and electronic concepts, introducing the principles and terminology essential for understanding automotive systems. The book explores sensors and actuators on a system-by-system basis, including: Fundamentals of electrical engineering, electromagnetic phenomena, and motor principles Passive and active electronic components, integrated circuits, protection devices, and automotive-grade electronics Sensor characteristics, signal conditioning, ADCs, PWM and frequency outputs, and interface adaptation Automotive communication links and protocols, including LIN and SENT Engine sensors: air mass, pressure, temperature, speed, position, exhaust and emissions-related sensors Transmission sensors for manual and automatic systems Steering and suspension sensors for conventional and active systems Vehicle body and electrical system sensors for comfort, climate, access, and monitoring functions Engine actuators such as throttle bodies, injectors, turbo actuators, EGR systems, ignition components, and pumps Transmission, brake, steering, suspension, and body actuators Identification and coding of electronic components and packages commonly used in automotive applications The structure and operating principles of each component are explained, with relevant electronic circuitry illustrated. Its system-oriented organization and practical focus make it a valuable reference for understanding, testing, and troubleshooting automotive electronic systems.

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Getting started with the world’s best open-source PCB tool The latest iteration of KiCad, the world’s best free-to-use Printed Circuit Board tool, is packed with features usually found only in expensive commercial CAD tools. This modern, cross-platform application suite built around schematic and design editors, with auxiliary applications is a stable and mature PCB tool. KiCad 8 is a perfect fit for electronic engineers and makers. Here are the most significant improvements and features in KiCad 8, both over and under the hood: Modern user interface, completely redesigned from earlier versions Improved and customizable electrical and design rule checkers Theme editor allowing you to customize KiCad on your screen Ability to import projects from Eagle, CADSTART, and more Python scripting API Improved integrated SPICE circuit simulator Multi-sheet schematics Filters define selectable elements Enhanced interactive router helps you draw single tracks and differential pairs with precision New or enhanced tools to draw tracks, measure distances, tune track lengths, etc. Advanced interactive router Built-in bill of materials generator Realistic ray-tracing capable 3D viewer Customizable teardrops Plug-in manager for quick installation of themes, libraries and functionalities such as autorouters and BOM generators This book will teach you to use KiCad through a practical approach. It will help you become productive quickly and start designing your own boards. Example projects illustrate the basic features of KiCad, even if you have no prior knowledge of PCB design. The author describes the entire workflow from schematic entry to the intricacies of finalizing the files for PCB production and offers sound guidance on the process. Further full-fledged projects, of incremental difficulty, will be presented in a second book, together with a variety of advanced recipes.

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An Introduction to Circuit Simulation LTspice, developed by Analog Devices, is a powerful, fast, and free SPICE simulator, schematic capture, and waveform viewer with a large database of components supported by SPICE models from all over the world. Drawing a schematic in LTspice is easy and fast. Thanks to its powerful graphing features, you can visualize the voltages and currents in a circuit, and also the power consumption of its components and much more. This book is about learning to design and simulate electronic circuits using LTspice. Among others, the following topics are treated: DC and AC circuits Signal diodes and Zener diodes Transistor circuits including oscillators Thyristor/SCR, diac, and triac circuits Operational amplifier circuits including oscillators The 555 timer IC Filters Voltage regulators Optocouplers Waveform generation Digital logic simulation including the 74HC family SPICE modeling LTspice is a powerful electronic circuit simulation tool with many features and possibilities. Covering them all in detail is not possible in a book of this size. Therefore, this book presents the most common topics like DC and AC circuit analysis, parameter sweeping, transfer functions, oscillators, graphing, etc. Although this book is an introduction to LTspice, it covers most topics of interest to people engaged in electronic circuit simulation. The book is aimed at electronic/electrical engineers, students, teachers, and hobbyists. Many tested simulation examples are given in the book. Readers do not need to have any computer programming skills, but it will help if they are familiar with basic electronic circuit design and operation principles. Readers who want to dive deeper can find many detailed tutorials, articles, videos, design files, and SPICE circuit models on the Internet. All the simulation examples used in the book are available as files at the webpage of this book. Readers can use these example circuits for learning or modify them for their own applications.

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The ESP8266 from Espressif is a Wi-Fi microchip with full TCP/IP stack and microcontroller capability. It has made waves in the maker community with its low price. But many developers were unhappy with ESP8266's high power consumption. The ESP32, equipped with a ULP (Ultra Low Power) coprocessor, offers a remedy for this. This e-book features a number of projects featuring ESP32 & ESP8266 as well as an interview with the CEO of Espressif Teo Swee Ann. Articles ESP32 for Use in Industry 4.0 Equipment Scrolling Message Display, 512 LEDs controlled over Wi-Fi via an ESP-12F The Connected Greenhouse IoT demonstration project using MQTT and Node-RED VFD-tube Clock with ESP32 with an accurate Internet-derived time ESP32 Low Power DCF77 Emulator with ESP8266 ESP8266 on the Elektor Android I/O Board The Reason Behind the Hugely Popular ESP8266? Wi-Fi Desktop Thermostat Timers for the Wi-Fi Desktop Thermostat PlatformIO, the Universal Programming Tool Weather Display, Visualize current weather data on an LC display GoNotify, a Flexible IoT Sensor Interface ESP32 for Power Users USB Programming Adaptor for ESP8266 Getting started with ESP32 and the Arduino IDE MicroPython, Python for small systems RGBDigit Clock WLAN for Microcontrollers Return of the Wi-Fi Controller Board Compact and Self-contained WLAN

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The Basics, New Ideas & Applications Build digital electronics from the ground up—and take it all the way to practical circuits you can use. This book guides you through the core principles of digital technology with a strongly hands-on approach. You’ll begin with the essentials: signals, devices for working with them, and what "logic 0" and "logic 1" mean in real hardware. Simple demonstration setups made from easy-to-find parts (LEDs, diodes, resistors, switches) help you see how logic behaves, making the theory click before you move on. From there, you’ll explore a wide range of logic elements and how they’re implemented, including classic logic families such as TTL and CMOS. The fundamentals section covers the building blocks of digital systems: flip-flops, Schmitt triggers, registers, counters and dividers, encoders/ decoders, multiplexers/demultiplexers, plus A/D and D/A conversion and timing circuits. Next, the book invites you into "new ideas" in digital electronics—universal logic elements, unconventional approaches (including thyristor-based and fractional logic), and creative logic functions that can inspire original designs. Finally, a large, well-organized collection of application circuits turns knowledge into projects: electronic switches and selectors, pulse generators, PWM regulators, frequency multipliers/dividers, phase shifters, and digital filters. Study it deeply, and you’ll gain not only understanding—but the ability to design and debug digital circuits independently.

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Mastering the I²C Bus takes you on an exploratory journey of the I²C Bus and its applications. Besides the Bus protocol, plenty of attention is given to the practical applications and designing a stable system. The most common I²C compatible chip classes are covered in detail. Two experimentation boards are available that allow for rapid prototype development. These boards are completed by a USB to I²C probe and a software framework to control I²C devices from your computer. All samples programs can be downloaded from the 'Attachments/Downloads' section on this page. Projects built on Board 1: USB to I²C Interface, PCA 9534 Protected Input, PCA 9534 Protected Output, PCA 9553 PWM LED Controller, 24xxx EEPROM Module, LM75 Temperature Sensor, PCA8563 Real-time Clock with Battery Backup, LCD and Keyboard Module, Bus Power Supply. Projects built on Board 2: Protected Input, Protected Output, LM75 Temperature Sensor, PCF8574 I/O Board, SAA1064 LED Display, PCA9544 Bus Expander, MCP40D17 Potentiometer, PCF8591 AD/DA, ADC121 A/D Converter, MCP4725 D/A Converter, 24xxx EEPROM Module.

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Programmierbare Taschenrechner selbst gebaut (E-book)

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The short-wave technique has a very particular appeal: It can easily bridge long distances. By reflecting short-wave signals off the conductive layers of the ionosphere, they can be received in places beyond the horizon and therefore can reach anywhere on earth. Although technology is striving for ever higher frequencies, and radio is usually listened to on FM, DAB+, satellite or the Internet, modern means of transmission require extensive infrastructure and are extremely vulnerable. In the event of a global power outage, there is nothing more important than the short-wave. Amateur radio is not only a hobby, it’s also an emergency radio system! Elektor’s SDR-Shield is a versatile shortwave receiver up to 30 MHz. Using an Arduino and the appropriate software, radio stations, morse signals, SSB stations, and digital signals can be received. In this book, successful author and enthusiastic radio amateur, Burkhard Kainka describes the modern practice of software defined radio using the Elektor SDR Shield. He not only imparts a theoretical background but also explains numerous open source software tools.

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Het boek beschrijft de werking van digitale circuits vanaf schakelingen met poorten tot aan de werking van een processor. Van elke schakeling of systeem kan de werking worden gesimuleerd. Hierbij wordt het gedrag van componenten en het verloop van signalen in de tijd op ingangen, uitgangen en relevante verbindingslijnen zichtbaar gemaakt. Zo wordt in detail gevisualiseerd wat het gedrag is van de hardware als er een instructie wordt uitgevoerd. Het boek is opgebouwd uit drie modules die de volgende onderwerpen behandelen: Basismodule Poorten en combinatorische schakelingen. Hoe rekent een computer? Hoe werkt een rekenmachine? Module Digitale Techniek Hoe ontwerp je combinatorische schakelingen m.b.v. Boole-algebra? Sequentiële schakelingen en het ontwerpen van ‘Finite State Systems’. Complexe schakelingen als decoders, multiplexers, asynchrone en synchrone tellers. Module Computerarchitectuur Hoe werkt een ‘loopje’ precies? If-then-else, while en for loops. De Harvard-architectuur. Hoe verloopt de communicatie tussen de aanroeper en de aangeroepene bij aanroep van een procedure? Bij de module Computerarchitectuur worden programma’s in de taal assembler geschreven. Hierbij wordt gebruik gemaakt van een instructieset van slechts 15 instructies. Website Het boek wordt ondersteund door de website: www.science.uva.nl/amstel/SIM-PL. De SIM-PL software en de componenten die nodig zijn voor de simulaties kunnen hiervandaan worden gedownload. Ook staan hier antwoorden op vragen en vraagstukken. Verder zijn op deze site collegesheets voor docenten en voorbeelden van tentamens beschikbaar. Doelgroepen VAN 0 EN 1 TOT PROCESSOR is geschreven voor iedereen die geïnteresseerd is in de basisprincipes waarop de werking van computers berust. Het boek is zeer geschikt voor studenten Informatica, Technische Informatica en E-technology in het hoger onderwijs en het MBO. Het boek kan worden ingezet bij vakken als Digitale Techniek, Embedded Systems en Architectuur & Computerorganisatie. Delen van de eerste drie hoofdstukken zijn opgenomen in modules voor de vakken Informatica, NLT en Wiskunde D in het voortgezet onderwijs. Ben Bruidegom is werkzaam bij het AMSTEL-Instituut van de Universiteit van Amsterdam als ontwikkelaar van educatieve hard- en software en docent aan het College of Science van deze universiteit. Hij heeft tientallen jaren ervaring op het gebied van de technische automatisering en het ontwikkelen van onderwijs hiervoor.

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This book is intended as a highly-practical guide for Hobbyists, Engineers and Scientists wishing to build measurement and control systems to be controlled by a local or remote Personal Computer running the Linux operating system. Both hardware and software aspects of designing typical embedded systems are covered in detail with schematics, code listings and full descriptions. Numerous examples have been designed to show clearly how straightforward it can be to create the interfaces between digital and analog electronics, with programming techniques for creating control software for both local and remote systems. Hardware developers will appreciate the variety of circuits, including a novel, low cost modulated wireless link and will discover how using Matlab® overcomes the need for specialist programming skills. Software developers will appreciate how a better understanding of circuits plus the freedom offered by Linux to directly control at the register level enables them to optimize related programs. There is no need to buy special equipment or expensive software tools in order to create embedded projects covered in this book. You can build such quality systems quickly using popular low-cost electronic components and free distributed or low-cost software tools. Some knowledge of basic electronics plus the very basics of C programming only is required. Many projects in this book are developed using Matlab® being a very popular worldwide computational tool for research in engineering and science. The book provides a detailed description of how to combine the power of Matlab® with practical electronics. With an emphasis on learning by doing, readers are encouraged by examples to program with ease; the book provides clear guidelines as to the appropriate programming techniques “on the fly”. Complete and well-documented source code is provided for all projects. If you want to learn how to quickly build Linux-based applications able to collect, process and display data on a PC from various analog and digital sensors, how to control circuitry attached to a computer, then even how to pass data via a network or control your embedded system wirelessly and more – then this is the book for you! Features of this Book Use the power, flexibility and control offered only by a Linux operating system on a PC. Use a free, distributed downloadable GNU C compiler Use (optional) a low-cost Student Version of Matlab®. Use low-cost electronic sub-assemblies for projects. Improve your skills in electronics, programming, networking and wireless design. A full chapter is dedicated to controlling your sound card for audio input and output purposes. Program sound using OSS and ALSA. Learn how to combine electronic circuits, software, networks and wireless technologies in the complete embedded system.

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A Guide to Powerful Programming for Embedded Systems You must be a well-rounded professional to excel in the ever-evolving, rapidly developing embedded design and programming industry. Simply put, when it comes to electronics design and programming, the more topics you can master, the more you’ll flourish at your workplace and at your personal workbench. This shouldn’t be a surprise, as the line between the skills of a hardware engineer and software engineer is blurring. The former should have a good grasp of programming in order to build efficient systems. The latter should understand the details of the design (whether it’s a physical or virtual application) for which he or she is writing code. Thus, to be successful, a modern professional electronics engineer must have a solid grasp of both hardware design and programming. Assembly Language Essentials is a matter-of-fact guide to Assembly that will introduce you to the most fundamental programming language of a processor. Unlike other resources about Assembly that focus exclusively on specific processors and platforms, this book uses the architecture of a fictional processor with its own hardware and instruction set. This enables you to consider the importance of Assembly language without having to deal with predetermined hardware or architectural restrictions. You’ll immediately find this thorough introduction to Assembly to be a valuable resource, whether you know nothing about the language or you have used it before. The only prerequisite is that you have a working knowledge of at least one higher-level programming language, such as C or Java. Assembly Language Essentials is an indispensible resource for electronics engineering professionals, academics, and advanced students looking to enhance their programming skills. The book provides the following, and more: An introduction to Assembly language and its functionality Significant definitions associated with Assembly language, as well as essential terminology pertaining to higher-level programming languages and computer architecture Important algorithms that may be built into high-level languages, but must be done the “hard way” in Assembly language — multiplication, division, and polynomial evaluation A presentation of Interrupt Service Routines with examples A free, downloadable Assembler program for experimenting with Assembly

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