EEVblog

By David L. JonesTechnology Education

EEVblog episodes

January 03, 2024 EEVblog 1590 – Cheap $33 Boombox Teardown
Is a modern $33 boombox from Kmart any good?
Forum: https://www.eevblog.com/forum/blog/eevblog-1590-cheap-$33-boombox-teardown/
20 min
January 02, 2024 EEVblog 1589 – CCD Scanner Array
A closer look at the scanner array head from the dumpster FAX machine teardown.
00:00 – Linear Scanner Array
04:40 – CCD sensor grouping
08:24 – The optical zebra strip
11:30 – Under the x400 Olympus microscope
Forum: https://www.eevblog.com/forum/blog/eevblog-1589-ccd-scanner-array/
15 min
December 23, 2023 EEVblog 1588 – Virgin Hyperloop One Goes BUST!
The Elon Musk vision of Hyperloop has come-a-gutsa. Vigin Hyperloop One has gone out of business. Who could have predicted it?
And who’s left standing in the Hyperloop world?
Forum: https://www.eevblog.com/forum/blog/eevblog-1588-virgin-hyperloop-one-goes-bust/
00:00 – Virgin Hyperloop has gone BUST!
02:54 – Well, it did actually carry humans.
04:33 – The Hyperloop isn’t actually an Elon Musk project
05:33 – Buying the Nevada test track for pennies on the dollar
07:23 – Australia was not immune to the madness
08:53 – It’ll cost next to nothing to run!, trust me bro
09:34 – Invetsment goes bye-bye
10:46 – It’s a fundamentally dumb idea
11:14 – They couldn’t even make it work as a cargo system
12:45 – DP World in Dubai lost their money
13:23 – Transpod Fluxjet and The Hyperloop Association!
15:45 – Nevomo Hyperloop
18:45 – Hardt Hyperloop, it’s all happening!
22:23 – Zeleros Hyperloop
24:32 – Swisspod
25:36 – Swisspod test track in Pueblo Texas
26:45 – Hyperloop Transportation Technologies
0 min
December 20, 2023 EEVblog 1587 – Dumpster FAX Teardown
Teardown of a Brother FAX machine found in the dumpster, just because.
Forum: https://www.eevblog.com/forum/blog/eevblog-1587-dumpster-fax-teardown/
20 min
December 20, 2023 EEVblog 1586 – Stranger Things Decade Resistor Box + Repair
A $12 6 decade resistor box, is it any good?
And it’s not every day you have to repair a brand new product.
https://s.click.aliexpress.com/e/_Ddfe4PL
https://s.click.aliexpress.com/e/_DnK2irb
DIY Decade box: https://www.youtube.com/watch?v=G-QfDkgE2qA
IET Decade Box: https://www.youtube.com/watch?v=37gYHdY0DAM
Genrad Decade Box: https://www.youtube.com/watch?v=fKrvtYS_6fI
Forum: https://www.eevblog.com/forum/blog/eevblog-1586-stranger-things-decade-resistor-box/
00:00 – A $12 Decade Resistor Box?
01:37 – Binding Posts: You get what you get, and you don’t get upset
02:31 – Stranger Things and the Upside Down
03:52 – Figured it out
04:56 – Molding
05:15 – Wiggle Wiggle Wiggle Yeah Test
05:41 – Teardown
08:01 – Knobs
09:02 – Repair
10:01 – Perfect candidate for modding
10:44 – How the dual wipe contact works
14:37 – Conclusion
17 min
December 20, 2023 EEVblog 1585 – SCAM! Portable Kinetic Molecular Heater BUSTED
The Portable Kinetic Molecular Heater is an obvious SCAM.
We shouldn’t have to look at why, but let’s do it anyway.
Forum: https://www.eevblog.com/forum/blog/eevblog-1585-scam!-portable-kinetic-molecular-heater-busted/
00:00 – Portable Kinetic Molecular Heater
01:06 – Yep, it’s a scam
03:06 – A look at the ridiculous website claims
06:31 – It can heat your entire home and melt the snow on your roof!
07:27 – Running the numbers on the Latent Heat equation.
12:05 – The BS comes in many flavours
15:14 – Teardown of the actual Portable Kinetic Molecular Heater
17:52 – Thermal camera test
0 min
December 07, 2023 EEVblog 1584 – Wireless Freakin’ EV Charging Roads! A $250M Boondoggle
The US Department of Transport have authorised a $250M grant program to fund Wireless EV charging roads. A look at the pilot program in Detroit Michigan with the startup company Electreon:
https://electreon.com/
00:00 – Wireless EV road charging in Detroit
01:15 – $250M funding from the US Department of Transport!
03:18 – The inductive road coil
05:29 – This project is a half arsed approach to EV costs.
06:50 – Petrol/Gas vs Electric EV charging, still no contest.
07:14 – Reminds me of Adam Something and his take on Electric Busses
08:21 – Electreon gets UN Approval!
09:02 – Private company tech in roads?
09:41 – The location in Detroit
10:53 – The Chicken & Egg problem
13:52 – The problems are many
16:57 – Let’s watch the Electreon marketing video
18:16 – The EV retrofit is EASY!
20:25 – The motherload of wireless charging failure analysis document from DOT!
26:41 – They make it sound so easy!
27:56 – They want these on consumer EV’s, LOL!
Reference Links:
DOT failure analysis report: https://rosap.ntl.bts.gov/view/dot/57152
https://www.forbes.com/sites/billkoenig/2023/12/01/wireless-charging-for-electric-vehicles-may-be-advancing/?sh=5aa369e81d5f
https://apnews.com/press-release/business-wire/technology-europe-middle-east-business-israel-1894c77ba274467a8fd29373a1da4a0c
https://www.prnewswire.com/news-releases/redefining-green-transportation-new-federal-bill-boosts-wireless-ev-charging-program-301894508.html
https://www.detroitnews.com/story/business/autos/2023/11/29/detroit-road-electreon-charge-ev-14th-street/71728909007/
https://apnews.com/article/wireless-roadway-electric-vehicle-charging-detroit-22fcdeabd026d81712a0c1a12b190d9a
https://stevens.house.gov/media/press-releases/rep-stevens-introduces-bill-expand-wireless-ev-charging-programs-federal-level
https://www.frontiersin.org/articles/10.3389/fenrg.2022.926270/full
https://www.designboom.com/technology/ev-charging-highways-electreon-wireless-electric-vehicles-sweden-italy-05-24-2021/
https://www.youtube.com/watch?v=L2S2qzGkcis
https://www.theautopian.com/toyota-electreon-roads/
https://meticulousblog.org/top-10-companies-in-wireless-electric-vehicle-ev-charging-systems-market/
https://www.meticulousresearch.com/product/wireless-electric-vehicle-charging-systems-market-5178
https://australasiantransportresearchforum.org.au/wp-content/uploads/2022/05/ATRF2022_Resubmission_32.pdf
https://www.bbc.com/news/uk-england-nottinghamshire-63101889
https://www.osti.gov/biblio/1493137
30 min
November 30, 2023 EEVblog 1583 – Advanced Oscilloscope Triggering: Glitch/Pulse/Runt/Interval
A practical demonstration on how to use advanced oscillocope trigger features to trigger on an unsynchronised infrequent runt/glitch pulse.
Includes Pulse/Glitch, Runt, Interval, Zone triggering, and infinite persistence display, and waveform update speed demonstrated and explained.
Using the Rohde & Schwarz MXO4, Siglent SDS2154X HD, Keysight 3000T, Tektronix Series 2, and the Rigol DHO800.
Forum: https://www.eevblog.com/forum/blog/eevblog-1583-advanced-oscilloscope-triggering-glitchpulseruntinterval/
00:00 – Advanced oscilloscope triggering features
00:27 – The test glitch signal
01:25 – Infinite persistence mode is your first tool
02:33 – How to estimate how often you can cature this
04:39 – DaveCAD drawing of how capture windows work
05:45 – This is NOT about trigger level
06:53 – Demonstration of using Glitch/Pulse capture on the MXO4
09:46 – This glitch is actually a Runt pulse
11:31 – Can you use History mode? Yeah, but good luck…
12:47 – Interval Trigger Mode on the MXO4
13:37 – Check this out! We found another hidden glitch pulse
14:23 – Siglent SDS2354X HD
16:14 – You don’t need an expensive scope! The Rigol DHO800
17:34 – Keysight 3000T
17:47 – This is a non-synchronous free running organic glitch
18:36 – Tektronix 2 Series
18:57 – Can you use Zone Triggering? Yeah, nah.
23 min
November 28, 2023 EEVblog 1582 – FNIRSI DPOX180H 180MHz DPO for $123?
A look at the FNIRSI DPOX180H 180MHz Handheld Digital Phosphor Oscilloscope for $123.
https://www.aliexpress.com/item/1005005564788266.html
https://eevblog.store/products/eevblog-bm036-ac-dc-clamp-meter
Forum: https://www.eevblog.com/forum/blog/eevblog-1582-fnirsi-dpox180h-180mhz-dpo-for-$123/
28 min
November 28, 2023 EEVblog 1581 – Tesla Roadster now OPEN SOURCE?
Elon Musk just announced that the Tesla Roadster is now open source! Do we get schematics? Let’s have a look…
https://service.tesla.com/roadster
Part 2: https://www.youtube.com/watch?v=r7Cw3GVXl44
18 min