Résultats de la recherche pour "audio OR power OR amplifiers"

Plus de 475 circuits audio issus de 30 ans d'Elektor Cette clé USB contient plus de 475 circuits audio extraits des numéros d'Elektor de 1995 à 2025. La fonction de recherche d'articles vous permet d'effectuer des recherches en texte intégral. Les résultats sont toujours affichés sous forme de documents PDF préformatés. Quelques points forts Décodeur Surround Ampli 50 W compact Convertisseur de taux d’échantillonnage Préamplificateur alimenté par piles Ampli Titan 2000 Crescendo-Millennium amplificateur Audio-DAC/ADC Émetteur/récepteur IR-S/PDIF Amplificateur Perfection Casque sans fil haute fidélité Commande de tonalité paraphase et plus… Sur la clé, vous trouverez également un dossier avec un contenu supplémentaire tel que des schémas de circuits imprimés, des fichiers Gerber et des logiciels. Spécifications Mémoire 16 Go Connecteurs 1x USB-A1x USB-C Matériel et logiciel requis Ordinateur avec Adobe Reader version 7 ou sup. Navigateur Internet Vous pourrez, par le biais du Reader d’Adobe, faire apparaître et rechercher les différents articles sur votre écran et imprimer les textes, schémas et dessins de platine.

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The author, Johan Basse Bergqvist, is an engineer, a musician, and an audiophile with a knack for building projects that produce the desired results. The combination of these skills leads to a uniquely valuable perspective on audio design that is routinely reflected in the book and passed on to the readers. Several design projects are provided, 40 in total. The designs are explained, and the unique features or methods he uses are described in further detail. Each design includes detailed schematics and a complete parts list. Many of the projects also include layout documentation in the form of CAD photos of the PCB layouts. The range of projects is very diverse and includes something that will appeal to everyone. Stereo amplifiers, guitar and bass amplifiers, preamplifiers for phono, and microphones are all covered. Several variants for each type are included, and the power amplifier designs range from a few watts to several hundred watts, which meet almost any power level you might tackle.

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Jan Didden a créé Linear Audio en 2010 et a publié 14 volumes entre 2010 et 2017. Chaque volume de 200 pages contient en moyenne 10 articles rédigés par des auteurs experts dans le domaine de l'audio, de l'acoustique et de l'instrumentation. Que vous vous intéressiez aux amplificateurs à tubes, aux équipements à semi-conducteurs, à la conception de haut-parleurs, à la distorsion des condensateurs et des résistances ou à la mesure de la distorsion, vous y trouverez certainement des conseils utiles et des réflexions intéressantes. Du niveau débutant au niveau avancé, pour le professionnel de l'audio ou l'amateur sérieux, cette collection d'experts vous permettra d'améliorer votre compréhension et vous offrira de nouvelles perspectives sur des problématiques courantes. Le contenu bonus inclus dans cette collection est constitué d'une série YouTube en 5 parties sur le feedback négatif appliqué à l'audio par l'auteur renommé Jan Didden, en plus de neuf articles et présentations audio de référence. Si vous vous intéressez sérieusement à l'audio, à l'acoustique et à l'instrumentation, ne manquez pas cette collection ! Le contenu publié est indexé et entièrement consultable et constituera une ressource presque illimitée pour l'avenir. Vous pouvez en savoir plus sur les auteurs deLinear Audio et la table des matières de chaque volume à linearaudio.net.

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Inhalt 30 Watt Röhrenverstärker mit variablem Dämpfungsfaktor 50 Watt Super Trioden Verstärker 300 Watt Röhrenendstufe Digibias: Digitale Ruhestrom-Einstellung und -Überwachung Paper Hatt: Klein, aber fein Origami M und C: Ein Subwoofer-Entwurf für zwei Anwendungsbereiche ScanSpeak Vertigo: Kompaktes Dreiwegesystem Intertrechnik Elip1: Elegante 2-Wege-Kombi zum kleinen Preis Visoton Clou: Prinzip Acoustical Tripath Pro HiFi Fréjus: Für Freunde der gehobenen Lautstärke ASE Someo: Kompakte Koaxial-Kombination ASE Someo-Sub: Aktiver Dipol-Woofer mit Linear Array Transducer MinimA: Ein minimalistischer 120 W Klasse-B-Verstärker Symmetrischer Vorverstärker/Aktives Filter: Ein Standardrezept für verschiedene Anwendungen RelaiXed: Symmetrischer Vorverstärker mit Relais

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Menno van der Veen is well known for his research publications on tube amplifiers used in audio systems. In this book he describes one of his research projects which focuses on the question of whether full compensation for distortion in tubes and output transformers is possible. In the past, a variety of techniques have been developed. One of them has largely been forgotten: trans-conductance, which means converting current into voltage or voltage into current. Menno van der Veen has breathed new life into this technique with his research project titled “Trans”. This book discusses all aspects of this method and discusses its pitfalls. These pitfalls are addressed one by one. The end result is a set of stringent requirements for Trans amplifiers. Armed with these requirements, Menno then develops new Trans amplifiers, starting with Transie 1 and Transie 2. These DC-coupled, single-ended tube amplifiers have unusually good characteristics and are suitable for hobbyist construction. Next the Trans principle is applied to amplifiers with higher output power. A trial-and-error process ultimately leads to the Vanderveen Trans 30 amplifier, which optimizes the features of Trans. The characteristics of this amplifier are so special and unique that Menno believes he has struck gold. To ensure that variations in tube characteristics cannot interfere with optimal Trans behavior, Menno makes use of simulations and comparison with other amplifier types. This book reads like an adventure story, but it is much more – it is an account of solid research into new ways to achieve optimal audio reproduction.

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From SRPP and Mu-Follower to OTL Designs Tube amplifiers suffer from distortion. Fortunately, circuits such as the SRPP amplifier, mu-follower, and beta-follower produce minimal distortion even at output voltages of 50 to 100 Vpeak. These designs are often published with errors. Without a sound understanding of the theory, it is easy to arrive at a flawed design. In the first section of this book, we investigate the origin of distortion, while in the second we investigate the design of and SRPP and a mu-follower. On the internet we can find the most exotic designs. Evaluating them teaches us that these designs often make matters worse rather than better. In the chapter on incorrect SRPPs and mu-followers, we sometimes see bizarre and misguided designs where using a simple single-triode amplifier would perform much better. Push-pull output stages also exist. A great number of them are examined, and their similarity to the SRPP is discussed. This is done especially with the help of the theory behind the OTL based on the ‘mother’ of all OTLs, the Philips HF303. Finally, attention is given to frequency characteristics and technical matters such as the supply voltage and the filament power supply. To illustrate these points, there are a few designs covering the subjects discussed. This book presents much new theory that has not been published before. It is often an eye-opener, showing that many things have a beautiful and unexpected simplicity.

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A Toolbox for Audio Lovers and Engineers Without any ambition to reach scientific levels, this book aims to be a toolbox for both audio lovers and high-end equipment designers. The elementary theory presented is the bare minimum for readers to grasp the operation and practical use of electrical, electromagnetic, physics, and electronic operations available in the designers’ toolbox. Each tool is explained in a minimum of words and theory without needless coverage of underlying equations or figures. The book chapters guide you through the process of designing quality amplifiers with vacuum tubes, from the very beginning, considering both technical and subjective requirements – in theory and practice. The book is a compilation of the author’s notes used in his professional and educational career but was nevertheless primarily written as a result of true love for the audiophile hobby.

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Valve Amplifiers are regarded by many to be the ne plus ultra when it comes to processing audio signals. The combination of classical technology and modern components has resulted in a revival of the valve amplifier. The use of toraidal-core output transformers, developed by the author over the past 15 years, has contributed to this revival. The most remarkable features of these transformers are their extremely wide frequency ranges and their very low levels of linear and nonlinear distortion. This book explains the whys and wherefores of toroidal output transformers at various technical levels, starting with elementary concepts and culminating in complete mathematical descriptions. In all of this, the interactions of the output valves, transformer and loudspeaker form the central theme. Next come the practical aspects. The schematic diagram of a valve amplifier often appears to be very simple at first glance, but anyone who has built a modern valve amplifier knows that a lot of critical details are hidden behind this apparent simplicity. These are discussed extensively, in connection with designs for amplifiers with output powers ranging from 10 to 100 watts. Finally, the author gives some attention to a number of special valve amplifiers, and to the theory and practice of negative feedback. In summary, this book offers innovative solutions for achieving perfect audio quality. Do-it-yourself builders, as well as persons who want to gain a deeper technical understanding of the complex world of audio transformers, valve amplifiers and audio signal processing, will find this book a rich and useful source of information.

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Le Elektor Audio DSP FX Processor combine un microcontrôleur ESP32 et un DSP Audio ADAU1701 d'Analog Devices. Outre un noyau DSP programmable par l'utilisateur, l'ADAU1701 intègre des convertisseurs analogique-numérique et numérique-analogique de haute qualité et dispose d'un port I²S. Cela le rend approprié comme interface audio de haute qualité pour l'ESP32. Les programmes pour l'ESP32 peuvent être créés avec Arduino, Platform IO, CMake ou en utilisant Espressif IDF d'une autre manière. Les programmes pour les DSP audio ADAU7101 sont créés avec l'outil de programmation visuelle gratuit SigmaStudio en glissant et déposant des blocs d'algorithmes prédéfinis sur un canevas. Applications Sink audio Bluetooth/Wi-Fi (par ex. haut-parleur) et source Pédale d'effet guitare (stomp box) Synthétiseur musical Générateur de sons/fonctions Filtre cross-over programmable pour haut-parleurs Processeur d'effets audio avancé (réverbération, chorus, pitch shifting, etc.) Appareil audio connecté à Internet Plate-forme d'expérimentation DSP MIDI sans fil Convertisseur MIDI vers CV et bien d'autres... Spécifications Processeur audio numérique ADAU1701 28/56 bits, 50 MIPS prenant en charge des taux d'échantillonnage allant jusqu'à 192 kHz Microcontrôleur double cœur ESP32 32 bits avec Wi-Fi 802.11b/g/n et Bluetooth 4.2 BR/EDR et BLE 2 entrées audio 24 bits (2 V RMS, 20 kΩ) 4 sorties audio 24 bits (0,9 V RMS, 600 Ω) 4x potentiomètres de contrôle Entrée et sortie MIDI Port d'extension I²C Fonctionnement multimode Alimentation : USB 5 V CC ou 7,5-12 V CC (prise cylindrique, broche centrale GND) Consommation de courant (moyenne) : 200 mA Inclus 1x Carte Audio DSP FX Processor (assemblée) 1x ESP32-PICO-KIT 2x Cavaliers 2x Connecteurs à 18 broches (female) 4x Potentiomètres de 10 Ko Téléchargements Documentation GitHub

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