Dave installs some more fluoro LED luminaire light replacements in the lab.
http://www.mueller-licht.de/
Previous videos:
LED tube design Safety: http://youtu.be/saYtnaBp4QA?t=16m30s
http://www.youtube.com/watch?v=saYtnaBp4QA
http://www.youtube.com/watch?v=Ym4O0z13HiM
http://www.youtube.com/watch?v=Ym4O0z13HiM
Forum: http://www.eevblog.com/forum/blog/eevblog-531-lab-led-fluoro-lighting-tube-replacement/
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Part 4 of microphone technology with Doug Ford, former head designer at Rode Microphones.
In this video Doug discusses how to design a condenser microphone, in particular the Rode Classic II microphone.
Many things discussed include:
External polarisation voltage generation and the relationship with sound pressure.
The trade-offs involved in bias voltage vs physical construction and sensitivity.
Diaphragm deformation and its effects.
CMOS oscillator design for high voltage generation.
Zener diode noise in relation to the knee type, and how to reduce it.
Heating and dehumidification advantages of valve based microphones.
Valve based amplifier design, and blending solid state for improved performance.
http://www.rodemic.com/microphones/classic2ltd
All videos in this series are here: https://www.youtube.com/playlist?list=PLvOlSehNtuHv98KUcud260yJBRQngBKiw
Forum: http://www.eevblog.com/forum/blog/eevblog-609-condenser-microphone-design-tutorial/
EEVblog Main Web Site:
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A reddit user asks what is the point in learning basic electronics these days when you can do everything with off the shelf modules and boards like Arduinos and the like.
They make it super easy to build stuff, so why does anyone need any knowledge of basic electronics any more?
http://www.reddit.com/r/TheAmpHour/comments/36evuq/i_am_confused_what_is_the_point_of_learning_basic/
Forum: http://www.eevblog.com/forum/eevblab/eevblab-10-why-learn-basic-electronics/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
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The EE Rap
Music: C.Had
Vocals: C.Had, Ben Brand
Sound Bites thanks to Dave Jones of EEVBlog.com
Inspired sites: EEVBlog.com, HackNMod.com
Lyrics:
http://eevblog.com/files/EERapLyrics.txt
Dave doesn't particularly like Youtube Multi-Channel Networks like Fullscreen, Machinima, and Makers Studios, and wishes they would just leave him alone.
Should you join one? What are the benefits?
Or are they all just spinning you bullshit?
The Ray William Johnson controversy: http://newmediarockstars.com/2012/12/why-i-left-maker-studios/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
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Ever wondered how they transmit your TV signal?
David Kilpatrick from TXAustralia takes us on a detailed tour of the old decommissioned 10kW analog TV transmission system at the Artarmon facility in Sydney. It is still used to transmit digital TV. How it all works from the broadcaster video input to final transmission output up the 180m broadcast antenna. Plus some teardowns of the old equipment that's been used to transmit the Channel 7 TV signal in Sydney since 1981.
Copper rigid coaxial lines, waveguides, filters, splitters, combiners, converters, transmission valve, power supplies and all the equipment necessary to transmit a 10kW analog or digital TV signal in a major city like Sydney.
The end of Australian analog TV:
http://www.youtube.com/watch?v=8q_S0Fk3dyM
Teardown: http://www.youtube.com/watch?v=ZmyYYKFePz4
David is happy to answer technical questions on the forum:
http://www.eevblog.com/forum/blog/eevblog-569-tour-of-an-analog-tv-transmission-facility/
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Mailbag time.
CERN Large Hadron Collider
Playstation 3 Yellow LED of Death
LME49990 http://www.ti.com/product/lme49990
AD797 http://www.analog.com/static/imported-files/data_sheets/AD797.pdf
Some vintage calculators: http://www.datamath.org/Related/Canon/Checkbook.htm
The first Teletype mailbag letter!
http://www.youtube.com/watch?v=fqASeTzb9dE
Old Fluke Multimeter parts
Micro robotic creatures
Forum: http://www.eevblog.com/forum/blog/eevblog-541-mailbag/
EEVblog Main Web Site:
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What's inside the original 1979 Sony Walkman TPS-L2?
The product that started the personal music revolution.
Teardown photos: http://www.eevblog.com/2015/06/10/eevblog-752-original-sony-walkman-tps-l2-teardown/
Service manual: http://freeservicemanuals.info/servicemanuals/download/Sony/tps-l2.pdf
Forum: http://www.eevblog.com/forum/blog/eevblog-752-original-sony-walkman-tps-l2-teardown/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
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An open hardware iPad Retina display adapter for Thunderbolt and Display Port
https://www.kickstarter.com/projects/1859884318/oscar-the-open-screen-adapter
Treadgaming, gaming while running in a treadmill: http://treadgaming.blogspot.com.au/
A documentary video on the origins of Hewlett Packard https://archive.org/details/HPOrigins
http://engineersbench.com/
http://masaradio.arkku.net/
Cypress USB 3.0 development kit: http://www.cypress.com/?id=3526&tabID=60939
Visionect - A complete 6" e-ink display waterproof WiFi enabled tablet development kit: http://www.visionect.com/
BareDuino - worlds smallest Arduino compatible board: http://www.seeedstudio.com/depot/BareDuino-Nano-p-1545.html
ERIC Low Power Encrypted RF Radio Modules http://www.lprs.co.uk/easy-radio/eric/
Forum: http://www.eevblog.com/forum/blog/eevblog-592-mailbag/
EEVblog Main Web Site:
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http://astore.amazon.com/eevblogstore-20
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