Résultats de la recherche pour "elektor or 11 or 12 or 2020 or pdf or de"

Inhalt Grundlagen Kathodengegenkopplung – bei Endröhren durch eine Übertragerwicklung Der Zwischenübertrager Bauanleitungen Eintakt-A-Endstufe mit 4x 6V6 – 6V6 quatroSE – ernsthafter Eintakter mit 16 W, nicht nur für hocheffiziente Lautsprecher CD-Vorverstärker mit CD-Filter Moderne Hybridendstufe Die Kathedrale in der Streichholzschachtel – Elektronische Hallspirale UKW-Mischteil – mit der Doppeltriode ECC2000 und der Triode/Pentode ECF80 Technik In die Röhre geschaut – Computer-tomografische Bilder vom Röhreninneren 6L6GC – with best Regards from the United States of America Röhrensockel Info Die Röhren-Sonderheft-Reihe hat die runde Zahl 10 erreicht Nachruf Jan Jurco – Gründer von JJ Electronic Buchbesprechung Röhrendaten

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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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L'alimentation de laboratoire à faible bruit d'Elektor est une unité symétrique, entièrement analogique, réglable et de puissance moyenne, qui ne contient aucun composant à découpage ni composant numérique. Elle fournit une tension de sortie réglable entre 0 V et ±22 V, ainsi qu’un courant de sortie réglable de 0 A à 1 A. Comme elle évite toute forme de circuit à découpage, sa conception offre un bruit extrêmement faible. Pour afficher les deux tensions et courants de sortie, quatre petits indicateurs analogiques à cadre mobile sont utilisés. La plupart des alimentations de laboratoire modernes et des adaptateurs secteur utilisent des techniques à découpage. Même les meilleurs modèles présentent inévitablement une ondulation haute fréquence et d’autres artefacts de commutation en sortie, susceptibles de perturber les tests de circuits analogiques sensibles et les mesures de faibles signaux. Pour éviter cela, le concept présenté ici repose sur une alimentation entièrement analogique. Bien qu’elle soit moins efficace que ses homologues à découpage, cette efficacité réduite a peu d’importance pour une utilisation sur banc d’essai et garantit des résultats de mesure plus propres et plus fiables. Comme de nombreux circuits analogiques nécessitent une alimentation symétrique, ce modèle fournit des tensions de sortie positive et négative de même amplitude. Un léger réglage est disponible pour compenser tout déséquilibre éventuel. Naturellement, une fonction de limitation de courant réglable est également intégrée. Le kit comprend les composants nécessaires à la construction de l’alimentation, à l’exception des transformateurs. Spécifications Tension de sortie 0…+22 V, 0, −22 V Courant de sortie 0…+1 A, 0…−1 A Bruit −85 dBV (à 0,95 A/20 V, B = 22 kHz) −84 dBV (à 0,95 A/20 V, B > 500 kHz) Ondulation résiduelle 50 µVRMS (à 950 mA/20 V, B = 22 kHz, composante principale à 100 Hz) Inclus 3x circuits imprimés : régulateur (PCB-1), filtre secteur (PCB-2) et transformateur (PCB-3) Tous les composants, à l'exception des transformateurs secteur 4x galvanomètres à cadre mobile Éléments de câblage (fils, bornes banane, embase secteur IEC, etc.) Non inclus Les trois transformateurs secteur Un boîtier Liste des pièces Pour le circuit imprimé du régulateur (240386-1) Résistances (250 mW, 1%) R1 = 12 Ω R2, R8, R37, R62 = 1 MΩ R3, R7, R10, R13, R17, R20, R22, R30, R35, R42, R45, R47, R55, R60 = 100 Ω, 600 mW R4, R5 = 4.7 kΩ R6 = 100 kΩ R9, R12, R14, R36, R38, R39, R61, R63, R66, R72, R78, R79 = 10.0 kΩ, 600 mW R11 = 9.76 kΩ, 600 mW R15, R40 = 44.2 kΩ, 600 mW R16, R41, R77 = 1 kΩ R18, R43 = 1.5 kΩ, 1 W, 5% R19, R44 = 470 Ω, 1 W, 5% R21, R46 = 330 Ω, 600 mW R23, R24, R48, R49 = 1.0 Ω, 1 W R25, R50 = 1 kΩ, 1 W, 5% R26, R28, R51, R53 = 1.000 kΩ 0.1%, 15 ppm/C R27, R29, R52, R54 = 10.00 kΩ 0.1%, 15 ppm/C R31, R56 = 1.2 kΩ, 1 W, 5% R32, R57 = 47 kΩ R33, R58 = 270 Ω R34, R59 = 27 kΩ R64, R69 = 12.0 kΩ R65 = 3.0 kΩ, 600 mW R67, R80 = 470 Ω, 600 mW R68, R70 = 6.8 kΩ, 600 mW R71 = 30.0 kΩ,, 600 mW R73, R74, R75, R76 = 10 MΩ P1, P2, P3 = 10 kΩ, 200 mW, 20%, potentiometer, 1 turns, single, lin., panel mount P4, P5 = 500 Ω, 500 mW, 10%, trimmer, 25 turns, 3296Y-1-501LF Bourns P6, P7 = 10 kΩ, 500 mW, 10%, trimmer, 25 turns, 3296Y-1-501LF Bourns Condensateurs C1 = 100 nF, 50 V, 10%, ceramic X7R, LS 5 mm C2, C3, C6, C7, C30 = 10 µF, 63V, 20%, LS 2.5 mm, 3000hours@105°C C4, C5, C8, C9, C13, C14, C18, C19, C23, C24, C28, C29, C31, C32, C38, C39 = 100 nF, 250 V, 10%, PET, LS 7.5 mm C10, C20 = 47 nF, 100 V, 5%, PET, LS 5 mm C11, C21 = 10 nF, 100 V, 5%, PET, LS 5 mm C12, C22 = 220 µF, 35 V, 20%, 0.024 Ω, LS2.5/3.5 mm, Ir 3.4 A, 2000hours@125°C, polymer C15, C25 = 120 µF, 50 V, 20%, ESR 0.02 Ω, Diam. 10 mm max., LS 5 mm C16, C26 = 15 nF, 100 V, 5%, PET, LS 5 mm C17, C27 = 47 nF, 100 V, 5%, PET, LS 5 mm C33, C34 = 22 µF, 50 V, 20%, LS 2 mm, 10000 hours @ 105°C C35, C36, C44, C45 = 1 µF, 100 V, 10%, LS 5 mm, ceramic X7R C37 = 100 uF, 50 V, 20%. LS 3.5 mm C40, C41, C42, C43, C46, C47, C48, C49 = 1000 µF, 50 V, 20%, LS 5/7.5 mm, Ir 3.32 A, 10000hours@105°C, D 16 mm C50, C51, C52, C53 = 47 nF, 100 V, 10%, ceramic X7R, LS 5 mm Selfs L1, L2 = 4.7 µH, 3.2 A, 0.033 Ω, LS 5 mm, RLB0914-4R7ML Bourns L3 = Commom mode choke, 14.5 mH, 3 A, SSRH24NH-30145 Kemet Semi-conducteurs D1, D2, D3, D4, D5, D9, D10, D11, D15 = BAT85, DO-34 D6, D7, D12, D13 = SR560, DO-201AD D8, D14, D16 = 1N4148, DO-35 D17 = Zenerdiode, 5.6 V, 0.5 W, DO-41 D18, D19 = 1N4004, DO-41 D20, D21 D22, D23 = V30100CI-M3/P, dual common cathode, TO-220 D24 = Zener diode, 30 V, 1 W, DO-41 LED1, LED2 = LED, red, T-1 (3 mm) LED3, LED4 = LED, green, T-1 (3 mm) TVS1, TVS2 = BZW50-33B, R6 T1, T2, T4 = BC337.25, TO-92 T3 = NJW0302G, TO-3P T5, T6, T8 = BC327.25, TO-92 T7 = NJW0281G, TO-3P T9 = BD139, TO-126 (SOT-32) IC1 = LM334Z, TO-92 IC2 = LM4040AIZ-5.0/NOPB, TO-92 (TO-226AA-3) IC3, IC4 = OPA2992IDR, SOIC-8 IC5, IC6 = OPA4992IDR, SOIC-14 IC7 = OPA992IDBVR, SOT-23-5 IC8 = LM339N, DIP-14 IC9 = LM317, TO-220 IC10 = LM337, TO-220 Autres F1, F2 = 5×20 mm fuse, 1.6 A, fast acting HS1, HS2 = Heatsink MC33271 (for T3/T7), 2.7°C/W, PCB mount, height 63.5 mm K1, K4 = 3-way screw terminal block, LS 3.5 mm, max. 1.5 mm² K2, K3 = 3-way screw terminal block, LS 3.5 mm, max. 1 mm² M1, M3 = Moving coil meter, Range 30 V, type 91C4, 45×45 mm M2, M4 = Moving coil meter, Range 1 A, type 91C4, 45×45 mm² RE1 = Relay DPDT,5V, UA2-5NU Divers 3× 3-way screw terminal block, LS 3.5 mm, max. 1 mm² (for P1, P2, P3) 4× Pin header, 1×2, vertical, pitch 2.54 mm (for LED1, LED2, LED3, LED4) 4× Pin socket, 1×2, vertical. pitch 2.54 mm (for LED1, LED2, LED3, LED4) 2× Heatsink FK222SA220, 20°C/W, PCB mount (for IC9 & IC10) 2× Mica thermal pad for TO-220, 12×18×0.05 mm (for IC9 & IC10) 2× Insulating bushing IB 6, TO-220 (for IC9 & IC10) 2× Ceramic thermal pad, 23×20×2 mm (for T3 & T7) 2× PCB Fuse Holder, for 5×20 mm fuse, 10 A (for F1, F2) 2× Cover for PCB Fuse Holder, transparent (for F1, F2) 2× 2-way screw terminal block, LS 3.5 mm, max. 1 mm² (for M1 & M3) 2× 2-way screw terminal block, LS 3.5 mm, max. 1.5 mm² (for M2 & M4) 8× M3 solder lug, thickness 0.35 mm (for M1…M4) M4 solder lug, thickness 0.35 mm (to connect 4 mm banana connectors) Screened cable, 1 pair, 2×24 AWG/0.22 mm², 1 m (for P1, P2 & P3) IC socket, DIP, 14 contacts (for IC8) M3 washer, plain, steel M3 screw, 16 mm, steel, pan head M3 nut M3 spring washer 50 mm M3 standoff, steel, male-female 12 mm M3 standoff, steel, male-female 10 mm M3 standoff, steel, male-female M3 screw, 8 mm, steel, pan head Pour le circuit imprimé du filtre secteur (240386-2) Résistance R1 = 220 kΩ, 1 W, 500 V, 5% Condensateurs C1, C2 = 470 nF, 305 VAC, Class X2, 11 × 27 mm max., LS 15/22.5 mm C3, C4, C5, C6 = 2.2 nF, 300 VAC, Class Y2, 13 × 4 mm, LS 10 mm, PP Selfs L1, L2 = Common-mode choke, 6.8 mH, 1.7 A, TDK B82732R2172B030 Semi-conducteur MOV1 = TVS varistor, 300 VAC, S14K300 (230 VAC, B72214S0301K101) and SK14K150 (150 VAC, B72214S0151K101) Autres K1, K2 = 3-way screw terminal block, LS 7.62 mm F1 = Time-delay fuse, 0.5 A (230 VAC) or 1 A (115 VAC) Divers 1× Fuse holder, 5×20 mm, 10 A, 500 VAC 1× Transparent fuse cover 4× 10 mm M3 standoff, steel, male–female 4× M3 screw, 8 mm, steel, pan head 4× M3 nut Pour le circuit imprimé du transformateur (240386-3) Résistances R1, R2 = 2.7 kΩ, 600 mW, 1% R3 = 10.0 kΩ, 600 mW, 1% Condensateur C1 = 220 µF, 50 V, 20%, Ø10 mm, LS 5 mm, 4000 h @ 105°C Transformateurs (non inclus dans ce kit !) TR1, TR2, TR3 = 2×7 V, 25 VA, PCB-mounted toroid, 70060K Talema Semi-conducteurs D1–D4 = 1N4148, DO-35 D5, D6 = 1N4004, DO-41 D7 = Zener 5.6 V, 1.3 W, DO-41 LED1 = LED, red, T-1 (3 mm) IC1, IC2 = MOC8021M, CTR ≥ 1000%, DIP-6 Autres F1, F2, F3 = 160 mA time-delay fuse (230 VAC) or 315 mA time-delay fuse (115 VAC) K1 = 2-way screw terminal block, LS 7.62 mm K2 = 3-way screw terminal block, LS 3.5 mm, max 1.5 mm² K3, K4 = 3-way screw terminal block, LS 3.5 mm, max 1 mm² RE1, RE2 = Relay DPDT, 5 A/250 VAC / 24 VDC Divers 1× Pin header 1×2, pitch 2.54 mm + matching socket for LED1 3× Fuse holder 5 × 20 mm, 10 A, 500 VAC + transparent cover 3× M4 screw, 8 mm, pan head + washer for TR1-TR3 8× M3 screw, 8 mm, pan head + nut + washer 8× 10 mm M3 standoff, steel, male–female 2× IC socket, DIP-6 for IC1 & IC2 Pièces supplémentaires 1 m red insulated wire, stranded, 1.5 mm² 0.5 m blue insulated wire, stranded, 1.5 mm² 0.5 m black insulated wire, stranded, 1.5 mm², 0.5 m 2 m red insulated wire, stranded, D 0.56 mm (0.25 mm²) 2 m black insulated wire, stranded, D 0.56 mm (0.25 mm²) 0.5 m Multicore Cable, Flexible, 3 Core, 0.75 mm² (24 x 0.2 mm) Red banana socket Black banana socket Blue banana socket Green banana socket IEC Power Entry Module with switch, IEC C14 3 crimp terminals, FASTON, 4.75 x 0.81 mm 3 knobs Liens Elektor Labs JumpStarter Page Article (1re partie) Article (2e partie)

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Ready-to-use devices and self-built Arduino nodes in the 'The Things Network' LoRaWAN has developed excellently as a communication solution in the IoT. The Things Network (TTN) has contributed to this. The Things Network was upgraded to The Things Stack Community Edition (TTS (CE)). The TTN V2 clusters were closed towards the end of 2021. This book shows you the necessary steps to operate LoRaWAN nodes using TTS (CE) and maybe extend the network of gateways with an own gateway. Meanwhile, there are even LoRaWAN gateways suitable for mobile use with which you can connect to the TTN server via your cell phone. The author presents several commercial LoRaWAN nodes and new, low-cost and battery-powered hardware for building autonomous LoRaWAN nodes. Registering LoRaWAN nodes and gateways in the TTS (CE), providing the collected data via MQTT and visualization via Node-RED, Cayenne, Thingspeak, and Datacake enable complex IoT projects and completely new applications at very low cost. This book will enable you to provide and visualize data collected with battery-powered sensors (LoRaWAN nodes) wirelessly on the Internet. You will learn the basics for smart city and IoT applications that enable, for example, the measurement of air quality, water levels, snow depths, the determination of free parking spaces (smart parking), and the intelligent control of street lighting (smart lighting), among others.

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Contents Projects PicoVoiceVoice alienation and sound effects with the Raspberry Pi Pico Navigation with Vibration Feedback POV Display Pulse Width Modulation (PWM) with the Raspberry Pi Pico Wi-Fi with the Raspberry Pi Pico 'Hello World' from the Raspberry Pi Pico and RP2040A look at the Raspberry Pi Foundation’s first microcontroller Simple On-Off Temperature Controller with Raspberry Pi HAT Multitasking with the Raspberry PiShowcase: a traffic lights controller The Raspberry Pi Ruler GadgetFun with a time-of-flight sensor Raspberry Pi Buffer Board (Mk. 1)Never blow up the I/O again FM radio with RDSA top HAT project for the Raspberry Pi LoRa with the Raspberry Pi PicoFun with MicroPython! Tutorials Qt for the Raspberry Pi Raspberry Pi Pico Programmingwith MicroPython and Thonny Raspberry Pi Full StackRPi and RF24 at the heart of a sensor network Raspberry Pi Bash Command Cheat Sheet Community Java on the Raspberry PiAn interview with Frank Delporte Reviews Introducing the New Raspberry Pi Pico W, H, and WH Secure Boot Solution for Raspberry PiRetrofit security at a reasonable price Review: SmartPi – Smart Meter Extension for Raspberry Pi Review: The Enviro+ Raspberry Pi HATMeasuring environmental data with Raspberry Pi and the HAT Enviro+ Review: Meet the Raspberry Pi 4All new but still good? Raspberry Pi Gets a Fast 3.5' Touch DisplayMore power at no extra charge Book Launch: Raspberry Pi for Radio Amateurs

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Projects with Thonny-IDE, uPyCraft-IDE, and ESP32 The 'Python' programming language has enjoyed an enormous upswing in recent years. Not least, various single-board systems such as the Raspberry Pi have contributed to its popularity. But Python has also found widespread use in other fields, such as artificial intelligence (AI) or machine learning (ML). It is obvious, therefore, to use Python or the 'MicroPython' variant for use in SoCs (Systems on Chip) as well. Powerful controllers such as the ESP32 from Espressif Systems offer excellent performance as well as Wi-Fi and Bluetooth functionality at an affordable price. With these features, the Maker scene has been taken by storm. Compared to other controllers, the ESP32 has a significantly larger flash and SRAM memory, as well as a much higher CPU speed. Due to these characteristics, the chip is not only suitable for classic C applications, but also for programming with MicroPython. This book introduces the application of modern one-chip systems. In addition to the technical background, the focus is on MicroPython itself. After the introduction to the language, the programming skills learned are immediately put into practice. The individual projects are suitable for use in the laboratory as well as for everyday applications. So, in addition to the actual learning effect, the focus is also on the joy of building complete and useful devices. By using laboratory breadboards, circuits of all kinds can be realized with little effort, turning the testing and debugging of the 100% homebrew projects into an instructive pleasure. The various applications, such as weather stations, digital voltmeters, ultrasound range finders, RFID card readers or function generators, make the projects presented ideally suited for practical courses or subject and study work in the natural sciences, or in science and technology classes.

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E-Book : Expériences physiques avec Arduino

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Hands-on in more than 50 projects STM32 Nucleo family of processors are manufactured by STMicroelectronics. These are low-cost ARM microcontroller development boards. This book is about developing projects using the popular STM32CubeIDE software with the Nucleo-L476RG development board. In the early Chapters of the book the architecture of the Nucleo family is briefly described. The book covers many projects using most features of the Nucleo-L476RG development board where the full software listings for the STM32CubeIDE are given for each project together with extensive descriptions. The projects range from simple flashing LEDs to more complex projects using modules, devices, and libraries such as GPIO, ADC, DAC, I²C, SPI, LCD, DMA, analogue inputs, power management, X-CUBE-MEMS1 library, DEBUGGING, and others. In addition, several projects are given using the popular Nucleo Expansion Boards. These Expansion Boards plug on top of the Nucleo development boards and provide sensors, relays, accelerometers, gyroscopes, Wi-Fi, and many others. Using an expansion board together with the X-CUBE-MEMS1 library simplifies the task of project development considerably. All the projects in the book have been tested and are working. The following sub-headings are given for each project: Project Title, Description, Aim, Block Diagram, Circuit Diagram, and Program Listing for the STM32CubeIDE. In this book you will learn about STM32 microcontroller architecture; the Nucleo-L476RG development board in projects using the STM32CubeIDE integrated software development tool; external and internal interrupts and DMA; DEBUG, a program developed using the STM32CubeIDE; the MCU in Sleep, Stop, and in Standby modes; Nucleo Expansion Boards with the Nucleo development boards. What you need a PC with Internet connection and a USB port; STM32CubeIDE software (available at STMicroelectronics website free of charge) the project source files, available from the book’s webpage hosted by Elektor; Nucleo-L476RG development board; simple electronic devices such as LEDs, temperature sensor, I²C and SPI chips, and a few more; Nucleo Expansion Boards (optional).

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Pfiffige Projekte zum Messen, Steuern und Regeln Der Raspberry Pi dominiert seit vielen Jahren die Maker-Szene. Frei verfügbare I/O-Pins machten ihn zu einem der beliebtesten Prozessorboards aller Zeiten. Allerdings verfügt der klassische Raspberry Pi über keinerlei Analogeingänge. Eine direkte Messung analoger Werte ist damit nicht möglich. So können weder Photodioden noch NTCs oder Hallsensoren etc. unmittelbar ausgelesen werden. Zudem sind die Pins direkt, d. h. ohne Treiber oder Schutzschaltung, mit den freiliegenden Kontakten verbunden. Dadurch kann der zentrale Controller und damit der gesamte Raspberry Pi schnell zerstört werden. Mit dem Pico können diese Probleme elegant gelöst werden. Er kann als sogenanntes „Frontend“ problemlos vielfältige Messaufgaben übernehmen. Zudem ist der Pico deutlich preisgünstiger als ein klassischer Raspberry Pi 4. Falls eine Fehlbeschaltung zur Zerstörung des Pico führt, ist dies vor allem für nicht-professionelle Anwender relativ leicht zu verkraften. Der klassische Raspberry Pi und der Pico werden so zum idealen Duo. Das Buch führt entsprechend in das weite und hochaktuelle Gebiet der modernen Controllertechnik anhand der beiden Boards „Raspberry Pi 4“ und „Raspberry Pi Pico“ ein. Neben einer tiefergehenden Einführung in die Arbeits- und Funktionsweise der Controllerboards selbst wird insbesondere auch auf die Messwerterfassung und -verarbeitung mit digitalen Prozessoren eingegangen. Insbesondere die Kombination beider Systeme bietet vielfältige und hochinteressante Möglichkeiten. Praktische Projekte aus dem Inhalt: USB-Verbindung zwischen Raspberry Pi 4 und Pico I²C-Kommunikation und Pico als I²C-Device Voltmeter und Computerthermometer Pico W als Web-Server und WLAN-Scanner Frequenzmesser und -generatoren OLED-Displays an Pico und Raspberry Pi 4 Energiesparmonitor Welche Astronauten sind im Orbit? Mini-Monitor für den aktuellen Bitcoin-Kurs

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Le FNIRSI 2D15P est un outil de test compact 3-en-1 qui combine un oscilloscope numérique à 2 canaux, un multimètre True RMS et un générateur de formes d'onde dans un seul appareil. Doté d'un écran tactile capacitif de 4,3 pouces, d'une bande passante de 100 MHz, d'une fréquence d'échantillonnage de 500 Méch/s et d'une vitesse d'acquisition jusqu'à 1200 images/s, il est idéal pour le dépannage rapide, l'analyse de signaux et les tests électroniques. Caractéristiques Entrée double canal (100 MHz en monocanal, 50 MHz en bicanal) Profondeurs de mémoire sélectionnables Bande passante limitée à 20 MHz Visualisation en niveaux de gris et température de couleur Opérations mathématiques (addition, soustraction, multiplication, division, etc.) Mode XY et persistance infinie Fonction curseur et 13 mesures automatiques Modes de déclenchement : Auto / Normal / Single Multimètre True RMS (19999 points) Générateur de signal DDS 10 MHz Spécifications Généralités Écran Écran tactile capacitif IPS 4,3 pouces Fonctionnement Tactile + Molette + Boutons physiques Chargement USB-C (charge rapide 12 V/1 A) Batterie Batterie au lithium 5000 mAh Dimensions 19,6 x 12,9 x 5,7 cm Poids 1,1 kg Oscilloscope Canaux 2 Bande passante analogique 100 MHz Fréquence d'échantillonnage 500 Méch/s Profondeur de mémoire 10K, 100K, 1M Impédance d'entrée 1 MΩ Plage de la base de temps 5 ns - 50 s Sensibilité verticale 10 mV - 10 V/div Tension d'entrée max. 800 V (sonde x10) Mode de déclenchement Auto, Normal, Single Type de déclenchement Montant, Descendant, Fronts montants et descendants Couplage CA/CC Persistance min / 2s / 5s / 10s / 20s / 50s / ∞ Calcul Opérations Oui Capture de forme d'onde Oui Exportation de forme d'onde Oui Mesure du curseur Oui Multimètre Tension CC 1.9999V / 19.999V / 199.99V / 1000V Tension CA 1.9999V / 19.999V / 199.99V / 750.0V Courant CC 19.999mA / 199.99mA / 1.9999A / 9.999A Courant CA 19.999mA / 199.99mA / 1.9999A / 9.999A Résistance 19.999MΩ / 1.9999MΩ / 199.99KΩ / 19.999KΩ / 1.9999KΩ / 199.99Ω Capacité 999.9uF / 99.99uF / 9.999uF / 999.9nF / 99.99nF / 9.999nF / 9.999mF / 99.99mF Diode Oui Continuité Oui Générateur de signaux Canaux 1 Fréquence 0–10 MHz Amplitude 0,1–3,0 Vpp Rapport cyclique 0–100% Inclus 1x FNIRSI 2D15P oscilloscope 2x Sondes d'oscilloscope P6100 1x Sonde multimètre 1x Sonde à pince crocodile 1x Câble de données USB 1x Manuel Téléchargements Manual Firmware V2.7.0.7

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Inhalt Projekte Pico-VoiceSprachverfremdung und Soundeffekte mit dem Raspberry Pi Pico Navi mit Vibrations-Feedback POV-Anzeige Impulsbreitenmodulation (PWM) mit dem Raspberry Pi Pico Verwendung von Wi-Fi mit dem Raspberry Pi Pico „Hello World“ vom Raspberry Pi Pico und RP2040Ein Blick auf den ersten Mikrocontroller der Raspberry Pi Foundation Einfacher Ein-Aus-Temperaturregler mit Raspberry-Pi-HAT Multitasking mit dem Raspberry PiBeispiel: Ampelsteuerung Das Raspberry-Pi-LinealSpaß mit einem Laufzeitsensor Puffer-Board für Raspberry Pi (Mk. 1)Nie wieder defekte I/O-Ports FM-Radio mit RDSEin HAT für den Raspberry Pi LoRa mit dem Raspberry Pi PicoViel Spaß mit MicroPython! Tutorials Qt für Raspberry Pi Raspberry Pi Pico Programmierungmit MicroPython und Thonny Raspberry Pi Full StackRPi und RF24 als Herzstück eines Sensornetzwerks Raspberry Pi – Bash-Befehle in der Übersicht Community Java auf dem Raspberry PiEin Interview mit Buch-Autor Frank Delporte Reviews Buchvorstellung: Raspberry Pi for Radio Amateurs Secure-Boot-Lösung für Raspberry PiViel Sicherheit zum vernünftigen Preis Review: SmartPi – Smartmeter-Erweiterung für Raspberry Pi Review: RPi-HAT Enviro+Umweltdaten messen mit Raspberry Pi und der HAT Enviro+ Review: Raspberry Pi 4Alles neu und doch gut? Schnelles 3,5“-Touch-Display für RPiMehr Leistung ohne Aufpreis

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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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