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Functionality, structure and handling of a power module For readers with first steps in power management the “Abc of Power Modules” contains the basic principles necessary for the selection and use of a power module. The book describes the technical relationships and parameters related to power modules and the basis for calculation and measurement techniques. Contents Basics This chapter describes the need of a DC/DC voltage converter and its basic functionality. Furthermore, various possibilities for realizing a voltage regulator are presented and the essential advantages of a power module are mentioned. Circuit topologies Circuit concepts, buck and boost topologies very frequently used with power modules are explained in detail and further circuit topologies are introduced. Technology, construction and regulation technology The mechanical construction of a power module is presented, which has a significant influence on EMC and thermal performance. Furthermore, control methods are explained and circuit design tips are provided in this chapter. Measuring methods Meaningful measurement results are absolutely necessary to assess a power module. The relevant measurement points and measurement methods are described in this chapter. Handling The aspects of storage and handling of power modules are explained, as well as their manufacturing and soldering processes. Selection of a power modules Important parameters and criteria for the optimal selection of a power module are presented in this section.

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Arduinonext is an initiative powered by an electronics and microcontrollers specialist team aiming to help all those who are entering in the technology world, using the well-known Arduino platform to take the next step in electronics. We strive to bring you the necessary knowledge and experience for developing your own electronics applications; interacting with environment; measuring physical parameters; processing them and performing the necessary control actions. This is the first title in the 'Hands-On' series in which Arduino platform co-founder, David Cuartielles, introduces board programming, and demonstrates the making of an 8-bit Sound Generator.

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Upgrade je Andonstar AD409, AD409 Pro of AD409 Pro-ES naar het Max-model met deze uitbreidingsset. Het nieuw ontworpen, oversized Max-station biedt voldoende werkruimte, waardoor het perfect is voor grotere projecten en ideaal voor professionele soldeertaken. Inbegrepen 1x Standaard met 2 LED's 1x Reparatiemat 1x Drager 1x Kolom 1x Gereedschapshouder 1x Solderende helpende handen

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De RTL-SDR is een betaalbare dongle die kan worden gebruikt als een computer-ondersteunde radioscanner voor het ontvangen van live radiosignalen tussen 500 kHz en 1,75 GHz bij u in de buurt. Deze RTL-SDR V4 heeft verschillende verbeteringen waaronder het gebruik van de R828D tunerchip, een triplex ingangsfilter, een notchfilter, verbeterde componenttoleranties, een 1 PPM temperatuur-gecompenseerde oscillator (TCXO), een SMA F-connector, aluminium behuizing met passieve koeling, bias T-circuit, verbeterde voeding en een ingebouwde HF upconverter. RTL-SDR V4 wordt geleverd met een draagbare dipool antennekit. Het is een geweldig apparaat voor beginners omdat hij terrestrial en satellietontvangst mogelijk maakt, gemakkelijk buitenshuis kan worden gemonteerd, en geschikt is voor draagbaar en tijdelijk gebruik onderweg. Kenmerken Verbeterde HF-ontvangst: De V4 maakt gebruik van een ingebouwde upconverter in plaats van een direct sampling circuit. Dit betekent dat er geen gebruik meer hoeft te worden gemaakt wordt van de Nyquist-frequentie van rond de 14,4 MHz, wat een verbeterde gevoeligheid en een instelbare versterking op HF mogelijk maakt. Net als bij de V3 blijft het laagste afstembereik 500 kHz en kan bij een zeer sterk ontvangstsignaal nog steeds front-end verzwakking/filtering nodig zijn. Verbeterde filtering: De V4 maakt gebruik van de R828D tunerchip die drie ingangen heeft. De SMA ingang is drievoudig uitgevoerd voor 3 banden: HF, VHF en UHF. Dit zorgt voor enige isolatie tussen de 3 banden, wat betekent dat out-of-band interferentie van sterke zenders minder snel verminderde gevoeligheid of spiegelsignalen kan veroorzaken. Verbeterde filtering x2: Naast de triplex ingang kan ook de open drain pin op de R828D worden gebruikt. Hierop kunnen eenvoudige notch-filters worden aangesloten voor bekende banden qua interferentie, zoals de AM en FM omroepbanden en de DAB-banden. Deze dempen slechts met een paar dB maar kunnen nog steeds van nut zijn. Verminderde faseruis op sterke signalen: Door een verbeterd ontwerp van de voeding is de faseruis als gevolg van ruis uit de voeding aanzienlijk verminderd. Minder warmte: Een ander voordeel van de verbeterde voeding is een lager stroomverbruik en minder warmteontwikkeling in vergelijking met de V3. Inbegrepen 1x RTL-SDR V4-dongle (R828D RTL2832U 1PPM TCXO SMA) 2x 23 cm tot 1 m telescoop antenne 2x 5 cm tot 13 cm telescoop antenne 1x Dipool antennevoet met 60 cm RG174 1x 3 m RG174 verlengkabel 1x Flexibele statiefbevestiging 1x Zuignapbevestiging Downloads Datasheet User Guide Quick Start Guide SDR# User Guide Dipole Antenna Guide

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The author Stephan Menzel provides an introduction into capacitor technology and describes the wide range of capacitor types with their properties and parameters. Basic principles This chapter imparts basic knowledge on the relationships between the electric field, permittivity, as well as the structure and operating principles of a capacitor. Capacitor characteristics The electrical parameters and essential characteristics of a capacitor are explained in greater detail for the reader. This extends from the actual capacitance of a capacitor through to the interdependencies. Capacitor types Existing capacitor types and their characteristics are presented. Film, electrolyte and ceramic capacitors are considered in detail.

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Over 45 Builds for the Legendary 555 Chip (and the 556, 558) The 555 timer IC, originally introduced by the Signetics Corporation around 1971, is sure to rank high among the most popular analog integrated circuits ever produced. Originally called the IC Time Machine, this chip has been used in many timer-related projects by countless people over decades. This book is all about designing projects based on the 555 timer IC. Over 45 fully tested and documented projects are presented. All projects have been fully tested by the author by constructing them individually on a breadboard. You are not expected to have any programming experiences for constructing or using the projects given in the book. However, it’s definitely useful to have some knowledge of basic electronics and the use of a breadboard for constructing and testing electronic circuits. Some of the projects in the book are: Alternately Flashing Two LEDs Changing LED Flashing Rate Touch Sensor On/Off Switch Switch On/Off Delay Light-Dependent Sound Dark/Light Switch Tone Burst Generator Long Duration Timer Chasing LEDs LED Roulette Game Traffic Lights Continuity Tester Electronic Lock Switch Contact Debouncing Toy Electronic Organ Multiple Sensor Alarm System Metronome Voltage Multipliers Electronic Dice 7-Segment Display Counter Motor Control 7-Segment Display Dice Electronic Siren Various Other Projects The projects given in the book can be modified or expanded by you for your very own applications. Electronic engineering students, people engaged in designing small electronic circuits, and electronic hobbyists should find the projects in the book instructive, fun, interesting, and useful.

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Design Guide for EMI Filter Design, SMPS & RF Circuits The book focuses on the selection of components, circuitry and layout recommendations for a wide array of magnetics components, always keeping in mind an EMC point of view. Contents Basic principles The most important laws and foundations of inductive components, equivalent circuit diagrams and simulation models give the reader a basic knowledge of electronics. Components This chapter introduces inductive components and their special properties and areas of use. All relevant components are explained, from EMC components and inductors to transformers, RF components, circuit protection components, shielding materials and capacitors. Applications In this chapter, the reader will find a comprehensive overview of the principle of filter circuits, circuitry and numerous industrial applications that are explained in detail based on original examples.

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Contents Basic principles A connector is an electromechanical system that provides a separable connection between two subsystems of an electronic device without an unacceptable effect on the performance of the device. It will be shown that there are a lot of complex parameters to handle properly to make this statement true. Design / Selection / Assembly This chapter provides an overview of design and material requirements for contact finishes, contact springs and connector housings as well as the major degradation mechanisms for these connector components. To complete this chapter, material selection criteria for each will also be reviewed. Additionally the Level of Interconnection (LOI) was integrated into this chapter as it addresses, where the connector is used within an electronic system and therefore influences the requirements and durability of the connector depending on its use. Applications This chapter is heading to the practical work and shows how customers use connectors in their applications to offer some possibilities and to ease your daily work. Additionally it contains some special topics like tin-whisker or impedance of ZIF cable to offer you extended background knowledge.

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The Internet of Things (IoT) is a new concept in intelligent automation and intelligent monitoring using the Internet as the communications medium. The “Things” in IoT usually refer to devices that have unique identifiers and are connected to the Internet to exchange information with each other. Such devices usually have sensors and/or actuators that can be used to collect data about their environments and to monitor and control their environments. The collected data can be processed locally or it can be sent to centralized servers or to the cloud for remote storage and processing. For example, a small device at the size of a matchbox can be used to collect data about the temperature, relative humidity and the atmospheric pressure. This data can be sent and stored in the cloud. Anyone with a mobile device can then access and monitor this data at any time and from anywhere on Earth provided there is Internet connectivity. In addition, users can for example, adjust the central heating remotely using their mobile devices and accessing the cloud. This book is written for students, for practising engineers and for hobbyists who want to learn more about the building blocks of an IoT system and also learn how to setup an IoT system using these blocks. Chapter 1 is an introduction to the IoT systems. In Chapter 2, the basic concepts and possible IoT architectures are discussed. The important parts of any IoT system are the sensors and actuators and they are described briefly in Chapter 3. The devices in an IoT system usually communicate with each other and the important aspect of IoT communication is covered in Chapter 4. Chapter 5 proceeds with the features of some of the commonly used development kits. One of these, the Clicker 2 for PIC18FJ manufactured by mikroElektronika, can be used as a processor in IoT systems and its features are described in detail in Chapter 6. A popular microcontroller C language, mikroC Pro for PIC gets introduced in Chapter 7. Chapter 8 covers the use of a click board with the Clicker 2 for PIC18FJ development kit. Similarly, the use of a sensor click board is described as a project in Chapter 9, and an actuator board in Chapter 10. Chapters 11 and 12 cover Bluetooth and Wi-Fi technologies in microcontroller based systems, and the remaining chapters of the book demo the creation of a simple Wi-Fi based IoT system with cloud-based data storage. This book has been written with the assumption that the reader has taken a course on digital logic design and has been exposed to writing programs using at least one high-level programming language. Knowledge of the C programming language will be very useful. Also, familiarity with at least one member of the PIC series of microcontrollers (e.g. PIC16 or PIC18) will be an advantage. The knowledge of assembly language programming is not required because all the projects in the book are based on using the C language. If you are a total beginner in programming you can still access the e-book, but first you are advised to study introductory books on microcontrollers.

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35 projecten met Raspberry Pi en wireless Arduino Internet of Things (alles aan het internet) is een trend die zich niet meer laat keren. We willen alles in huis met onze mobiel of tablet doen, van Facebook tot TV kijken, van lichten bedienen tot de temperatuur in de gaten houden. In dit boek laten we in 35 leuke en handige projecten zien hoe u op eenvoudige wijze zelf een Internet of Things systeem kunt aanleggen. We gaan in op de hardware (de perfecte combinatie van Raspberry Pi en Arduino) en de software om bediening via internet mogelijk te maken. We maken gebruik van Wi-Fi en radioverbindingen zodat er geen kabels dwars door uw huis hoeven. Wanneer u deze projecten maakt heeft u een compleet Internet of Things systeem waarmee u van alles in uw huis kunt bedienen en bekijken. Bijvoorbeeld of er post in de brievenbus ligt en of de auto in de garage staat. U kunt op vanaf de bank het licht aandoen en het alarm bedienen. Door de heldere uitleg kunt u de projecten eenvoudig aanpassen om bijvoorbeeld uw koffiezetautomaat of tv op afstand aan te zetten. Via de index vindt u gemakkelijk creatieve projecten die als voorbeeld kunnen dienen, zodat u zelfstandig alles met het internet kunt verbinden.

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The State of Hollow State Audio in the Second Decade of the 21st Century Vacuum-tube (or valve, depending upon which side of the pond you live on) technology spawned the Age of Electronics early in the 20th Century. Until the advent of solid-state electronics near mid-century, hollow-state devices were the only choice. But following the invention of the transistor (after their process fell to reasonable levels), within a couple of decades, the death of vacuum tubes was widely heralded. Yet here we are some five decades later, and hollow-state equipment is enjoying something of a comeback, especially in the music and high-end audio industries. Many issues surround hollow-state audio: Does it produce—as some claim—better sound? If so, is there science to back up these claims? How do hollow-state circuits work? How do you design hollow-state audio circuits? If hollow-state equipment fails, how do you go about troubleshooting and repairing it? Can we recreate some of the classic hollow-state audio devices for modern listening rooms and recording studios? How can we intelligently modify hollow-state amplifiers to our taste? These and other topics are covered in The State of Hollow State Audio.

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