Suchergebnisse für "raspberry OR pi OR 400 OR fr"

Elektor Januar/Februar 2020 PDF FR

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Der OWON HDS2102s ist ein tragbarer 3-in-1-Multifunktionstester, der als 2-Kanal-Oszilloskop mit einer Bandbreite von 100 MHz, Multimeter und Signalgenerator verwendet werden kann. Es verfügt über ein kontrastreiches 3,5-Zoll-Farbdisplay, das sich für die Wartung von Außenanlagen, schnelle Messungen vor Ort, die Wartung von Kraftfahrzeugen und die Stromerkennung eignet. usw. Features Oszilloskop + Multimeter + Wellenformgenerator, Multifunktion in einem 3,5 Zoll hochauflösendes, kontrastreiches Farb-LCD-Display, geeignet für den Außenbereich 18650-Lithiumbatterie, kann 3–6 Stunden lang ununterbrochen arbeiten USB-Typ-C-Schnittstelle, unterstützt Powerbank, unterstützt PC-Software-Verbindung Selbstkalibrierungsfunktion SCPI unterstützt, erleichtert die sekundäre Entwicklung Technische Daten Bandwidth 100 MHz Channels 2-ch Oscilloscope + 1-ch Generator Sample Rate 500 MSa/s Acquisition Model Normal, Peak detect Record Length 8K Display 3.5-inch LCD Waveform Refresh Rate 10,000 wfrms/s Input Coupling DC, AC, and Ground Input Impedance 1 MΩ ±2%, in parallel with 16pF ±10pF Probe Attenuation Factors 1X,10X,100X,1000X,10000X Max. input Voltage 400 V (DC+AC, PK-PK, 1MΩ input impedance) (10:1 probe attenuation) Bandwidth Limit (typical) 20 MHz Horizontal Scale 2ns/div - 1000s/div, step by 1 - 2 - 5 Vertical Sensitivity 10mV/div - 10V/div Vertical Resolution 8 bits Trigger Type Edge Trigger Modes Auto, Normal, single Automatic Measurement Frequency, Period, Amplitude, Max, Min, Mean, PK-PK Cursor Measurement ΔV, ΔT, ΔT&ΔV between cursors Communication Interface USB-C Multimeter (Technische Daten) Max. Resolution 20,000 counts Testing Mode Voltage, Current, Resistance, Capacitance, Diode, and Continuity test Input Impedance 10 MΩ Max Input Voltage AC 750 V, DC 1000 V Max Input Current DC: 10 A, AC: 10 A Diode 0-2 V Signalgenerator (Technische Daten) Frequency Output Sine 0.1 Hz - 25 MHz Square 0.1 Hz - 5MHz Ramp 0.1 Hz - 1 MHz Pulse 0.1 Hz - 5 MHz Arbitrary 0.1 Hz - 5 MHz Sampling Rate 125 MSa/s Channel 1-ch Amplitude Range (high impedance) 20 mVpp - 5 Vpp Waveform Length 8K Vertical Resolution 14 bits Output Impedance 50Ω Lieferumfang 1x OWON HDS2102s 1x Netzteil 1x USB-Kabel 1x Passive Sonden 2x Krokodilklemmenkabel 1x Satz Multimeter-Sonden (eine rote und eine schwarze) 1x Manual 1x Sondenkorrektur-Einstellmesser Downloads User Manual Specifications SCPI Protocol Quick Guide Software

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From Oscillators and Modulation to RF Amplifiers, Filters, and Antennas Discover the principles, techniques, and practical skills behind radiofrequency (RF) transmitters in this comprehensive guide to designing, building, simulating, testing, and troubleshooting real RF circuits. Starting with the fundamentals of oscillation and resonance, this book takes you step by step through the complete transmitter chain, from signal generation to antenna. Explore Hartley, Colpitts, Clapp, Pierce, crystalcontrolled, varactor, PLL, and DDS oscillators, alongside practical methods for generating amplitude modulation (AM) and frequency modulation (FM). Learn how to design oscillators, buffer stages, RF drivers, and power amplifiers, and understand the operating principles of Class A, B, AB, C, D, E, and F amplifiers. Discover how component selection, biasing, tuned loads, efficiency, and thermal management influence real-world performance. Practical circuit design is at the heart of this book. You will learn to calculate inductors, work with resonant circuits, match complex impedances using L, T, and Pi networks, and design Butterworth filters with support from LTspice simulations. Useful computer programs simplify calculations for coils, tuning capacitors, filters, and impedance-matching networks. A detailed 7.1505 MHz transmitter case study brings these concepts together, demonstrating how individual stages can be designed, tested, and integrated into a working system. Beyond theory, this book addresses the challenges that often determine success in practice: parasitic effects, grounding, shielding, decoupling, circuit loading, component tolerances, and thermal behavior. Whether you are an engineer, a radio amateur, or a student, this book will help you move beyond formulas and develop a deeper understanding of how RF transmitters really work.

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Learn to use Python productively in real-life scenarios at work and in everyday life If you have mastered the basics of Python and are wanting to explore the language in more depth, this book is for you. By means of concrete examples used in different applications, the book illustrates many aspects of programming (e.g. algorithms, recursion, data structures) and helps problem-solving strategies. Including general ideas and solutions, the specifics of Python and how these can be practically applied are discussed. Python 3 for Science and Engineering Applications includes: practical and goal-oriented learning basic Python techniques modern Python 3.6+ including comprehensions, decorators and generators complete code available online more than 40 exercises, solutions documented online no additional packages or installation required, 100% pure Python Topics cover: identifying large prime numbers and computing Pi writing and understanding recursive functions with memorisation computing in parallel and utilising all system cores processing text data and encrypting messages comprehending backtracking and solving Sudokus analysing and simulating games of chance to develop optimal winning strategies handling genetic code and generating extremely long palindromes Downloads Software

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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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From Oscillators and Modulation to RF Amplifiers, Filters, and Antennas Discover the principles, techniques, and practical skills behind radiofrequency (RF) transmitters in this comprehensive guide to designing, building, simulating, testing, and troubleshooting real RF circuits. Starting with the fundamentals of oscillation and resonance, this book takes you step by step through the complete transmitter chain, from signal generation to antenna. Explore Hartley, Colpitts, Clapp, Pierce, crystalcontrolled, varactor, PLL, and DDS oscillators, alongside practical methods for generating amplitude modulation (AM) and frequency modulation (FM). Learn how to design oscillators, buffer stages, RF drivers, and power amplifiers, and understand the operating principles of Class A, B, AB, C, D, E, and F amplifiers. Discover how component selection, biasing, tuned loads, efficiency, and thermal management influence real-world performance. Practical circuit design is at the heart of this book. You will learn to calculate inductors, work with resonant circuits, match complex impedances using L, T, and Pi networks, and design Butterworth filters with support from LTspice simulations. Useful computer programs simplify calculations for coils, tuning capacitors, filters, and impedance-matching networks. A detailed 7.1505 MHz transmitter case study brings these concepts together, demonstrating how individual stages can be designed, tested, and integrated into a working system. Beyond theory, this book addresses the challenges that often determine success in practice: parasitic effects, grounding, shielding, decoupling, circuit loading, component tolerances, and thermal behavior. Whether you are an engineer, a radio amateur, or a student, this book will help you move beyond formulas and develop a deeper understanding of how RF transmitters really work.

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This book contains more than 400 simple electronic circuits which are developed and tested in practice by the authors. The technical solutions presented in the book are intended to stimulate the creative imagination of readers and broaden their area of thought. This should allow readers to look beyond the horizons of possibilities and use ordinary electronic items in a new way. This book includes new and original radio electronic multipurpose circuits. The chapters of the book are devoted to power electronics and measuring equipment and contain numerous original circuits of generators, amplifiers, filters, electronic switches based on thyristors and CMOS switch elements. Wired and wireless systems as well as security and safety systems are presented. Due to the high relevance and increased interest of readers in little-known or not readily available information, the different chapters of this book describe the use of electronic devices in industrial electronics and for research, as well as new instruments and equipment for medical use, gas-discharge and Kirlian photography. A number of technical devices presented in this book are related to research of the mysteries of the earth, nature and human beings by using radio electronic devices. This book will be useful for both radio amateurs and professionals.

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Inhalt Praxis LED-KommunikatorDesign-Studie: Verwendung von handelsüblichen LEDs zur bidirektionalen Kommunikation Nachrichten-Ticker Bau eines Internet-News-Tickers ALS es Licht wurde Controller steuert Beleuchtungseinrichtungen nach Umgebungshelligkeit und Uhrzeit BULI - Button-Lichtspiele Effekte mit LED2812 und Cortex-M0+ Theorie & Anwendung DesignCorner: Schaltungen, Tipps und Kniffe- Posistor gegen den Hitzetod- High-Brightness-LEDs an Niedervolt-Stromversorgungen betreiben- Derating mit PTC-Thermistoren in LED-Treiberschaltungen- Der Umgang mit LED-Strings- LED-Treiber für unterschiedliche Wandler-Topologien- LED-Konstantstromtreiber in Schaltreglertechnik Grenzen überschreiten Ansteuerung von LEDs mit gepulstem Überstrom Ansteuerung von LED-Matrixschaltungen MultitalentController treibt LEDs, regelt Solarzellen und lädt Batterien Dimmungstechniken für LEDs Info OLED – Die FlächenlichtquelleZum Entwicklungsstand der organischen Leuchtdiode 400 LED-Lampen auf dem Prüfstand Über dem LimitLEDs mit höheren Treiberströmen ansteuern AktuellNeue LEDs, LED-Lampen, Treiber, Netzteile, Zubehör und Entwicklungs-Tools

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