EEVblog

By David L. JonesTechnology Education

EEVblog episodes

November 28, 2023 EEVblog 1580 – MacGruber Mailbag
More Mailbag!
00:00 – Mailbag Monday time
01:42 – T-88C Analog Multimeter
https://s.click.aliexpress.com/e/_DEojyDp
07:26 – Teardown
12:11 – PCB proto boards from Jon Newcomb
http://www.jnewcomb.com/
https://www.ebay.co.uk/usr/jon_newcomb
19:02 – 1990 Tandy Catalog from Ant Cross
https://www.youtube.com/@ANTandTEC
28:04 – Alcatel S12 Line Test Card
38 min
November 14, 2023 EEVblog 1579 – Nuclear Diamond Battery FRAUD Lawsuit by SEC
The Nuclear Diamond Battery that made a huge marketing splash back in Aug 2020 and raised $1.2M in funding, NDB Inc and it’s founder Nima Golsharifi is now being sued by the SEC for fraud. No product ever existed, no testing was ever done, and they had no customers. Oopsie!
Original Debunking video: https://www.youtube.com/watch?v=uzV_uzSTCTM
https://www.ans.org/news/article-5359/sec-files-lawsuit-against-nuclear-battery-startup/
https://www.sec.gov/files/litigation/complaints/2023/comp25829.pdf
https://www.sec.gov/Archives/edgar/data/1787068/000178706821000004/golsharifi.htm
https://www.sec.gov/Archives/edgar/data/1787068/000178706821000004/offering.htm
https://www.bidwells.co.uk/properties/origin—harlow-essex-cm17-
Forum: https://www.eevblog.com/forum/blog/eevblog-1579-nuclear-diamond-battery-fraud-lawsuit-by-sec!/
18 min
November 09, 2023 EEVblog 1578 – No one can be told what the Metrix is.
A multimeter without any screws? A 1990’s vintage Metrix MX44 multimeter torn down, tested and calibration adjusted.
Forum: https://www.eevblog.com/forum/blog/eevblog-1578-the-screwless-multimeter-metrix-mx44-teardown-calibration/
30 min
November 09, 2023 EEVblog 1577 – History of Cathode Ray Tubes with Kathy Joseph
Kathy Joseph from Kathy Loves Physics joins me on The Amp Hour to discuss history and physics and we end up discussing the intricate history of the development of the Cathode Ray Tube.
Read Kathy’s Book The Lightning Tamers: https://tinyurl.com/TheLightningTamers
https://www.youtube.com/@KathyLovesPhysics
Forum: https://www.eevblog.com/forum/blog/eevblog-1577-history-of-cathode-ray-tubes-with-kathy-joseph/
1 hr 19 min
November 01, 2023 EEVblog 1576 – Tektronix DMM916 Multimeter Teardown & (Easy) Repair
Easy repair and teardown of the rather obscure Tektronix DMM916 Multimeter.
Ebay auction: https://www.ebay.com.au/itm/225848873343
Forum: https://www.eevblog.com/forum/blog/eevblog-1576-tektronix-dmm916-multimeter-teardown-(easy)-repair/
19 min
November 01, 2023 EEVblog 1575 – TIPA: The World’s Most Efficient Solar Panel – BUSTED
TIPA: The World’s Most Efficient Solar Panel raised £293,000 on Indiegogo and Kickstarter, AND also got a UK government innovation grant for £560,000!
They claim 3 times the power output of regular solar panels by using mirrors to reflect the light back on the solar cells (TIPA: Total Internal Photonic Absorption). They claim 80% of the light that hits a solar panel is reflected!
And when challeged by a solar cell researcher from the University of Freiburg on the claims of 80% reflectance and why they don’t independently test, there is a hirarious word salad response!
https://borchertlab.com/juliane/
Forum: https://www.eevblog.com/forum/blog/eevblog-1575-tipa-the-worlds-most-efficient-solar-panel-busted/
The owner has been busy: https://find-and-update.company-information.service.gov.uk/officers/koV1FIQV3bcKEHlZu4H5_6vAEDE/appointments
https://www.indiegogo.com/projects/tipa-the-world-s-most-efficient-solar-panel#/
https://www.kickstarter.com/projects/tipa/tipa-total-internal-photonic-absorption/description
https://gtr.ukri.org/projects?ref=105277
https://yellowstud.io/research
https://alt-things.com/about-us-3/
https://en.wikipedia.org/wiki/Shockley%E2%80%93Queisser_limit
https://www.nrel.gov/pv/reflectance-spectroscopy.html
https://www.youtube.com/@UClilz8CXhUFBRrdAUenRKWw
00:00 – Another Dodgy Crowd Funder
01:00 – £560,000 UK Government Innovation Grant!
01:42 – Let’s watch the video!
06:22 – How it works
06:58 – We can beat the Shockley Queisser Limit!
09:17 – $2BN valuation!
09:28 – The prototypes
10:15 – How they screwed up
12:06 – Reflective coatings and solar panel efficiency tradeoff
13:26 – Some actual reflection measurements using reflectance spectroscopy
15:18 – There ain’t no free lunch. The claims are BS
16:52 – The reflection/absorption efficiency tradeoff
17:54 – Let’s see what else they have developed at Yellow Studio!
19:21 – Electon Spin Battery Charging using magnetic forces!
19:55 – Solar Electromagnetic Energy Power Battery System using liquid nitrogen!
21:11 – Their other Kickstarter projects
24:14 – Hilarious word salad response to a solar cell researcher calling them out!
28:49 – Conclusion
30 min
October 31, 2023 EEVblog 1574 – REVIEW: Is the $42 Fluke 101 Multimeter Any Good?
Is a $42 Fluke multimeter any good? The Fluke 101 reviewed.
https://tinyurl.com/Fluke101
A thanks from Zotek founder: https://www.youtube.com/watch?v=2I7m43RyVWU
Pocket Multimeter shootout: https://www.youtube.com/watch?v=LCFEonQDkQU
Forum: https://www.eevblog.com/forum/blog/eevblog-1574-is-the-$42-fluke-101-multimeter-any-good/
00:00 – A $42 Fluke?
00:43 – Made in China, and the infamous Fluke 19
01:27 – Fluke 101 vs 106 vs 107
02:00 – Comaprison with ANENG AN8008
03:03 – The display vs the AvE Hammer
03:53 – The range switch
04:12 – The battery compartment and TL75 probe leads
06:09 – What are you buying here?
08:08 – Diode and capacitance test
09:33 – The biggest disappointment, no AutoHold
10:55 – 1200V overload test and accuracy testing
12:41 – Common mode conducted mode RFI test
13:10 – Drop testing
13:38 – Power on options
14:08 – Calibration seal and port
14:30 – Teardown
20:26 – A pocket multimeter?
21:51 – Battery life, power consumption measurements, and lithium battery test
42:09 – Conclusion
27 min
October 19, 2023 EEVblog 1573 – TEARDOWN: How a Rotary (Angle) Pulse Encoder Works
How a Rotary (Angle) Pulse Encoder works. This is entirely different to the normal quadrature phase encoder you have used before.
A teardown from the Haefely Trench PESD 1600 ESD Tester.
Unboxing & Testing video of 16kV ESD tester: https://www.eevblog.com/2023/10/13/exclusive-haefely-esd-gun-unboxing/
Pointless video about toggle switches: https://www.youtube.com/watch?v=k1C0qz8fR_U
Forum: https://www.eevblog.com/forum/blog/eevblog1573-teardown-how-a-rotary-(angle)-pulse-encoder-works/
00:00 – This is NOT a regular quadrature rotary encoder!
02:08 – Tool Tip, Pin Vice
05:41 – EDC tool shootout, Victorinox MiniChamp vs Gerber Dime vs Olight Otacle
06:34 – We’re in like Flynn!
07:13 – New Lab Jack for the Tagarno microscope
08:09 – Of course that’s how it works
09:59 – Why is this not used more often?
12:29 – How it works
14:49 – Is there another example of this type of encoder? if not, why not?
17 min
October 16, 2023 EEVblog 1572 – Haefely 16kV ESD Tester TEARDOWN + Repair Part 1
Teardown and Part 1 repair of a Haefely Trench PESD1600 16kV ESD tester.
If you can help identify the rotary encoder at 25:52 that would be awesome!
Unboxing and testing: https://www.eevblog.com/2023/10/13/exclusive-haefely-esg-gun-unboxing/
Forum thread for the rotary encoder: https://www.eevblog.com/forum/repair/help-finding-rotary-encoder/
Forum: https://www.eevblog.com/forum/blog/eevblog-1572-haefely-16kv-esd-tester-teardown-repair-part-1/
29 min
October 12, 2023 EEVblog 1571 – Nobel Prize Winning Mailbag. 121GW, Retro calcs, Assembly, and Discrete Logic
Bumper mailbag!
Send stuff to:
EEVblog Mailbag
PO Box 7949
Norwest NSW 2153
AUSTRALIA
00:00 – Mailbag
00:18 – Barry Marshall, Nobel Prize Winner returns a faulty 121GW
https://www.youtube.com/watch?v=yPLA69a5OOU
02:54 – Nobel Prize Chocolates
03:53 – Faulty 121GW
09:04 – TI SR-51 calculator from 1974
http://www.datamath.org/Sci/WEDGE/sr-51.htm
19:55 – TI SR-51 Teardown
25:15 – Digi-matic 8 calculator from 1972
29:47 – More retro calulators and assembly programming book
32:29 – Lean Multi-Platform Assembly Language Book
https://assemblytutorial.com/
https://www.amazon.com/Learn-Multiplatform-Assembly-Programming-ChibiAkumas/dp/B09VWHYDKJ/?&_encoding=UTF8&tag=ee04-20&linkCode=ur2&linkId=2b5042d0d5fc70e95e6f1cb0d2e1ddad&camp=1789&creative=9325
35:53 – Casio SL-760 credit card calculators + Sanyo
37:47 – Gent LC-517 wallet calculator
40:04 – DIY Scrabble Timer project using all discrete logic
Verilog: https://twitter.com/BrunoLevy01/status/1694973514002923808
Takachi Enclosures: https://www.takachi-enclosure.com/
48 min