Bart Schroder from Cleverscope talks about the challenges in designing the world's highest performance isolated oscilloscope.
Measurement demo on a 500V MOSFET H-Bridge and how to accurately probe it. Then a teardown and walk through of the design of the new CS448 1kV 4CH 200MHz 14bit isolated oscilloscope and the custom probes, power supplies and optical fibre interfaces they had to design to get this performance.
https://cleverscope.com/products/CS448
Bart has written are article on the development, he let me upload it here:
http://www.eevblog.com/files/CleverscopeSep2018.pdf
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https://www.youtube.com/watch?v=I7ppDNLlEL4
Fundamentals Friday.
Dave explains Gain Bandwith Product and how it's possible to increase your system bandwidth by cascading opamps in series. Also, a discussion on the associated noise issues.
A breadboard example shows how variable GBWP can be, and how it can relate to distortion.
Opamp Noise Tutorial: http://www.youtube.com/watch?v=Y0jkPLuFdnM
Forum: http://www.eevblog.com/forum/blog/eevblog-572-cascading-opamps-for-increased-bandwidth/
EEVblog Main Web Site:
http://www.eevblog.com
EEVblog Amazon Store:
http://astore.amazon.com/eevblogstore-20
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https://www.youtube.com/watch?v=ZvT9hHG17tQ
Resultsw of the 2021 EEVblog survey. Thanks to everyone who contributed!
NOTE: The test equipment live prize draw will be on the EEVblog2 channel soon.
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https://www.youtube.com/watch?v=T5cRvs44LcE
Dave checks out one of his favorite "old" oscilloscopes, the 2000 vintage Agilent 54622D mixed signal oscilloscope with the original megazoom ASIC technology and high resolution CRT display.
http://cp.literature.agilent.com/litweb/pdf/5968-8152EN.pdf
Original Megazoom presentation: http://www.hit.bme.hu/~papay/edu/Lab/MegaZoom.pdf
Megazoom III presentation: http://www.tequipment.net/assets/1/26/Documents/Agilent5988-9106EN.pdf
Gate Array datasheet: http://www.ic72.com/pdf_file/q/16580.pdf
Forum: http://www.eevblog.com/forum/blog/eevblog-591-agilent-54622d-retro-mixed-signal-osciloscope-review-teardown/
Teardown photos:
http://www.eevblog.com/2014/03/16/eevblog-591-agilent-54622d-retro-mixed-signal-osciloscope-review-teardown/
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https://www.youtube.com/watch?v=aVNfFewFn_Y
Review of the Gigatron.io TTL 8 bit retro computer kit. The processor is built entirely using TTL logic.
http://www.gigatron.io
Live 4 hours build: https://www.youtube.com/watch?v=wECZoUNd2GY
Forum: http://www.eevblog.com/forum/blog/eevblog-1080-gigatron-ttl-risc-kit-computer-review/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
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https://www.youtube.com/watch?v=6vbI-r5aXJI
An interesting dive down the repair rabbit hole on an Onkyo TX-SR607 surround sound receiver amplifier with a failed vacuum fluorescent display.
Forum: https://www.eevblog.com/forum/blog/eevblog-1394-onkyo-receiver-repair-part-1/
Subscribe on Odysee: https://odysee.com/@eevblog:7
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Support the EEVblog through Patreon! http://www.patreon.com/eevblog
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Buy anything through that link and Dave gets a commission at no cost to you.
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https://www.youtube.com/watch?v=YMC3R86_2h0
Marty! This is the big one, the one I've been waiting for all my life!
Teardown of the classic Data IO Unisite Universal Programmer from the 1980's, with a typical configuration selling for $35,000
It stayed in production for over 20 years.
Forum: http://www.eevblog.com/forum/blog/eevblog-1060-dataio-unisite-universal-programmer-teardown/
http://www.dataio.com/Company/About-Data-I-O/40th-Anniversary/1980s
http://dataioinfo.dataio.com/support/manuals.asp
http://www.paulswan.me/arcade/DataIOUnisite.htm
http://matthieu.benoit.free.fr/dataio_unisite_programmer.htm
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https://www.youtube.com/watch?v=9MIzbTpdt80
Dave talks with Shahriar Shahramian from The Signal Path.
This is an introduction and we talk about being Youtubers etc.
This is PART 1
NOTE: Yes I know the video sucks, wasn't much light in there and camera did what it wanted to do.
Yes I know the audio isn't perfect either, Shahriar is a softer talker than me, so I had to run it through The Levellator to even it out.
PART 2: https://www.youtube.com/watch?v=2xy_kqOufv8
PART 3: https://www.youtube.com/watch?v=tjdae8oqYMQ
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https://www.youtube.com/watch?v=g3y_Vr8ZJ7w