Image impedance filters | Electronic filter topology
Zobel networks are a type of filter section based on the image-impedance design principle. They are named after Otto Zobel of Bell Labs, who published a much-referenced paper on image filters in 1923. The distinguishing feature of Zobel networks is that the input impedance is fixed in the design independently of the transfer function. This characteristic is achieved at the expense of a much higher component count compared to other types of filter sections. The impedance would normally be specified to be constant and purely resistive. For this reason, Zobel networks are also known as constant resistance networks. However, any impedance achievable with discrete components is possible. Zobel networks were formerly widely used in telecommunications to flatten and widen the frequency response of copper land lines, producing a higher performance line from one originally intended for ordinary telephone use. Analogue technology has given way to digital technology and they are now little used. When used to cancel out the reactive portion of loudspeaker impedance, the design is sometimes called a Boucherot cell. In this case, only half the network is implemented as fixed components, the other half being the real and imaginary components of the loudspeaker impedance. This network is more akin to the power factor correction circuits used in electrical power distribution, hence the association with Boucherot's name. A common circuit form of Zobel networks is in the form of a bridged T network. This term is often used to mean a Zobel network, sometimes incorrectly when the circuit implementation is not a bridged T. (Wikipedia).
What are the W and Z particles?
Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu
From playlist Science Unplugged: Particle Physics
The myth of Anansi, the trickster spider - Emily Zobel Marshall
Follow the spider Anansi on his quest to complete a challenge from the Sky God in order to take ownership of the world’s stories. -- Long ago, all stories belonged to Nyame, the all-seeing Sky God. But one creature, Anansi, was determined to bring the stories down to Earth. Anansi went t
From playlist Myths from Around the World
Appeler (to call) — Present Tense (French verbs conjugated by Learn French With Alexa)
Alexa conjugates the French verb appeler (to call) in the present tense. Bisou Bisou 💋 Support us and get exclusive member benefits: https://www.youtube.com/channel/UCK6TzBHhEUCKa6dgjlsVHEw/join ---------------------------------------------- TAKE YOUR FRENCH TO THE NEXT LEVEL M
From playlist Alexa Polidoro: Common French Verbs | CosmoLearning French Language
How to Create a GeoGebra Class from an Activity
More info: https://www.geogebra.org/m/hncrgruu#material/mxc255j6 #GeoGebra
From playlist GeoGebra Classroom: Quick Tutorials
The Zinnia, a wooden kinetic sculpture designed by Clayton Boyer, built by Joe Stubler. Plans available at http://www.lisaboyer.com/Claytonsite/Claytonsite1.htm
From playlist Kinetic Sculpture
DevOps Infrastructure Automation using Ansible | DevOps Tutorial | Edureka DevOps Live
🔥Edureka DevOps Training: https://www.edureka.co/devops-certification-training/ This Edureka "DevOps Infrastructure Automation" session takes you through the basic approach automating DevOps Infrastructure. It revolves around reasoning for the need of infrastructure automation and discussi
From playlist Edureka Live Classes 2020
Axyl Linux - A Distro for Window Manager Lovers
Today I look at Axyl Linux for the first time. 👇 PULL IT DOWN FOR THE GOOD STUFF 👇 Patreon - https://patreon.com/thelinuxcast Liberapay - https://liberapay.com/thelinuxcast/ Youtube - https://www.youtube.com/channel/UCylGUf9BvQooEFjgdNudoQg/join ===== Follow us 🐧🐧 ====== Odysee - https:
From playlist Distro Reviews
Featuring Zvezdelina Stankova... Continues with "Question 6" at https://youtu.be/NcaYEaVTA4g - More links & stuff in full description below ↓↓↓ Zvezda: https://math.berkeley.edu/~stankova/ More Zvezda on Numberphile: http://bit.ly/zvezda_videos Zvezda on the Numberphile podcast: https://
From playlist Zvezdelina Stankova on Numberphile
What Do Millennial and Gen Z Employees Want in the Workplace?
In this Dynamic Communication interview, author @dynamicjill Jill Schiefelbein chats with @danschawbel Dan Schawbel, New York Times Bestselling Author, serial entrepreneur, and Fortune 500 consultant. Dan talks about research his company has conducted showing commonalities and differences
From playlist Grow, Lead, and Manage Your Business with Dynamic Communication Book Interviews
What’s New in ZorinOS 16 Lite?
Today I take a brief first look at ZorinOS 16 Lite edition with xfce. 👇 PULL IT DOWN FOR THE GOOD STUFF 👇 Patreon - https://patreon.com/thelinuxcast Liberapay - https://liberapay.com/thelinuxcast/ Youtube - https://www.youtube.com/channel/UCylGUf9BvQooEFjgdNudoQg/join ===== Follow us 🐧🐧
From playlist Distro Reviews
Link: https://www.geogebra.org/m/D4hmNy9M
From playlist 3D: Dynamic Interactives!
Tracing the Cosmic Web: The Multiscale Morphology (...) - Jones - Workshop 2 - CEB T3 2018
"Bernard Jones (Kapteyn Astronomical Institute) / 23.10.2018 Tracing the Cosmic Web: The Multiscale Morphology of the Megaparsec Universe ---------------------------------- Vous pouvez nous rejoindre sur les réseaux sociaux pour suivre nos actualités. Facebook : https://www.facebook.co
From playlist 2018 - T3 - Analytics, Inference, and Computation in Cosmology
MAST30026 Lecture 11: Hausdorff spaces (Part 3)
This lecture contains the second half of the proof that a finite CW-complex is a Hausdorff space. Lecture notes: http://therisingsea.org/notes/mast30026/lecture11.pdf The class webpage: http://therisingsea.org/post/mast30026/ Have questions? I hold free public online office hours for thi
From playlist MAST30026 Metric and Hilbert spaces
Getting Started with GeoGebra 3D (ARCore by Google)
To get started, see https://www.geogebra.org/m/jhcywuqw.
From playlist GeoGebra 3D With AR (Google): Explorations, Demos, & Lesson Ideas
The Road to Gödel's Incompleteness Theorems - Juliette Kennedy
Friends Lunch with a Member Topic: The Road to Gödel's Incompleteness Theorems Speaker: Juliette Kennedy Date: November 22, 2019
From playlist Friends of the Institute
GeoGebra 3D Beginner Tutorial: Exercise 2
GeoGebra Resource: https://www.geogebra.org/m/ehjbeexu#material/vspwmbjb
From playlist GeoGebra 3D: Beginner Tutorials (Series in the Making) With Lesson Ideas
Stanford Seminar - An Alternative to the American way of Innovation
EE380: Computer Systems Colloquium Seminar Shenzhen: An Alternative to the American way of Innovation Speaker: Andrew "Bunnie" Huang, Bunniestudios (Singapore) In this talk, we start with a top-down exploration of the electronics ecosystem of Shenzhen. We then pivot at the topic of recyc
From playlist Stanford EE380-Colloquium on Computer Systems - Seminar Series
Stéphanie Cupit-Foutou : Momentum polytopes of Kähler compact multiplicity-free manifolds
I will present some results about the momentum polytopes of the multiplicity-free Hamiltonian compact manifolds acted on by a compact group which are Kählerizable. I shall give a characterization of these polytopes, explain how much they determine these manifolds and sketch some applicatio
From playlist Algebraic and Complex Geometry
Tv Reclame van de De Belastingdienst Telsell parodie
From playlist awareness