EEVblog on Odysee

More mailbag!

00:00 - Biggest mailbag load EVER. Too much random stuff to list...
26:24 - Logicgat Digital Logic training board.
https://logicgat.es/
31:22 - SLogic16U3 $69 USB3 800MHz Logic Analyser
https://wiki.sipeed.com/hardware/en/logic_analyzer/slogic16u3/Introduction.html


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#ElectronicsCreators #Mailbag
...
https://www.youtube.com/watch?v=G3EfUcMvEQo

Expanding the AERL home storage battery from 25kWh to 75kWh!
Also replacing the 5kW Deye hybrid inverter with an 8kW Solis hybrid inverter.
And installing a changeover switch to power most of the house from the Backup port in the new inverter.
https://www.aerl.com.au/products/life2-battery
https://www.thomsonenergy.com.au/
Solis s6-eh1p8k-l-plus-au
https://www.solisinverters.au/uploads/files/202506/Solis_Manual_S6-EH1P(3-8)K-L-PLUS_AU_V1,1(20250530).pdf

Forum: https://www.eevblog.com/forum/blog/eevblog-1719-75kwh-home-storage-battery-expansion/

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#ElectronicsCreators #Solar #batterystorage
...
https://www.youtube.com/watch?v=EK_X03lTmEE

What use is a 500MHz oscilloscope if it doesn't have a high frequency active probe interface? Well, there are several options including a cheap $5 DIY resistive probe.
Demonstration of active FET probing vs Passive Probing vs DIY Resistive probing.

A lot of material extracted from videos 1367 and 1368
https://www.youtube.com/watch?v=rzo4Ntxqu1E
https://www.youtube.com/watch?v=WlSb8hdFtTY

Forum: https://www.eevblog.com/forum/blog/eevblog-1718-is-a-cheap-1ghz-oscilloscope-useless-($5-diy-1ghz-resistive-prob/

00:00 - What use is a cheap 1GHz oscilloscope if it doesn't have an active probe interface?
02:30 - Capacitive reactance and tip capacitance
03:55 - High bandwidth passive probes
04:59 - Active FET probes to the rescue, right?
07:54 - DIY $5 1GHz Resistive probe
09:02 - DIY resistive probe explained
14:15 - Active FET probe example: Poor Grounding vs Good Grounding
19:44 - $5 DIY Resistive probe vs $3k Active FET probe
20:30 - What's going on here? The downside of resistive probes.
21:50 - Resistive probes are more tolerant of grounding
25:50 - Conclusion

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#ElectronicsCreators #oscilloscope
...
https://www.youtube.com/watch?v=E3G9G79YErg

Rigol have released the new MHO900 series mixed signal oscilloscope. For $999 entry level MHO934 you get 4CH 350MHz 12 bit at 4Gs/s, this is insane!
Teardown of the special edition 1GHz MHO98 (still only $1399!)


https://www.rigol.com/intl/products/oscilloscope/MHO900.html
In Australia: https://emona.com.au/quick-links/rigol/

00:00 - Special Limited Edition MHO98
01:07 - DHO900 vs MHO900
03:06 - Is there another 350MHz scope for $999?
04:48 - Teardown
07:15 - Dual 100MHz AWG PCB
08:23 - 1GHz front end
09:44 - Custom ASIC ADC
13:02 - Impressive assembly minimisation
14:07 - Back the main PCB
16:35 - Why the front end shields are not soldered is kinda smart
17:50 - What has Dave screwed up?
19:57 - Dumb arse Dave does it again
20:42 - Bootup
22:21 - Power consumption measurement
22:39 - Front end PCB analysis
26:04 - The acquisition ASIC is not what it seems...
27:31 - Can anyone else touch this price touch? Analysis of other brands.
33:28 - Web interface and basic bandwidth checks
37:17 - Trigger jitter issue with multiple channels?
39:42 - Conclusion

Forum: https://www.eevblog.com/forum/testgear/rigol-mho98-and-mho900-oscilloscope-series/

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#ElectronicsCreators #Rigol #Oscilloscope
...
https://www.youtube.com/watch?v=6lBU4NwmY7s

Youtube are laying off anyone who wants to leave, in a big restructure and AI push.

Forum: https://www.eevblog.com/forum/blog/eevblab-134-youtube-layoffs-ai-push/

Web Site: http://www.eevblog.com
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#ElectronicsCreators #Youtube #layoffs
...
https://www.youtube.com/watch?v=jp-pSRQ7fLE

A viewer went dumpster diving at the University of Technology and found some classics.
Teardown and playing with a Kikusui DSS5040 Analog/Digital Storage scope.
Plus a classic Australian BWD 603B Mini-Lab

Manual: https://www.eevblog.com/files/Kikusui_DSS5040_E.pdf

00:00 - University Dumpster diving time!
02:46 - Kikusui DSS5040 Analog/Digital storage oscilloscope
07:12 - Teardown
10:51 - Power On
17:14 - Digital Storage Mode
21:24 - Conclusion

Forum: https://www.eevblog.com/forum/blog/eevblog-1716-university-dumpster-diving-kikusui-oscilloscope/

Web Site: http://www.eevblog.com
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#ElectronicsCreators #DumpsterDiving #Oscilloscope
...
https://www.youtube.com/watch?v=hHZ1sS1vH4I

Swiss company Euler Precision have a new 3GHz active probe on Crowd Supply, let's take a look.
https://www.crowdsupply.com/euler-precision/esap-30

00:00 - The Euler Precision eSAP-30 Active Probe
01:26 - The problem with passive probes, Capacitance Reactance
03:31 - Unboxing
05:55 - Open Source?
06:46 - It's all about the probe accessories
08:08 - Measurement report
10:02 - Real world measurement using Keysight reference probe
11:57 - Testing the Euler probe with a flat flex probe interface
13:13 - Let's probe it even better...
15:55 - Noise comparison test
16:09 - Teardown
19:26 - 700MHz passive probe comparison
20:48 - Conclusion

Forum: https://www.eevblog.com/forum/blog/eevblog-1715-euler-precision-esap-30-3ghz-active-probe-review/

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#ElectronicsCreators #Review #Oscilloscope
...
https://www.youtube.com/watch?v=YbvJGekAHYw

Classic intermittent "popping" noise from this Presonos Eris 5 studio monitor speaker. Electrolytic Capacitors are suspect number one.

00:00 - Faulty Presonos Eris 5 speaker. Classic "popping" sound.
03:48 - Teardown
07:16 - Testing for popping again
07:36 - Testing for hiss
08:32 - Rectified voltage testing
09:34 - Woah, that's that?
10:26 - Getting the PCB out
10:55 - A look at the PCB under the microscope
TAD7294:
https://www.st.com/resource/en/datasheet/tda7294.pdf
13:15 - Missing parts
14:39 - Removing the capacitors
16:00 - Measuring the main filter capacitors
17:14 - The Preamp PCB
18:08 - What is the most likely culprit?
20:21 - In-circuit ESR testing
21:32 - All new capacitors
24:15 - Soldering in new caps and testing
25:38 - What did I goof?
27:57 - Conclusion

Forum: https://www.eevblog.com/forum/blog/eevblog-1714-presonos-eris-speaker-repair-(capacitor-pop)/

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#ElectronicsCreators
...
https://www.youtube.com/watch?v=xVp7yund84w

A look at the crazy ferrite core density in the Ampex 1600 16k x 18 bit word magnetic core memory from Ampex Memory Products Division.

00:00 - Magnetic core memory
01:52 - How magnetic core memory works
07:12 - Ampex high density 16Kword core memory

Magnetic core simulator: https://nationalmaglab.org/magnet-academy/watch-play/interactive-tutorials/magnetic-core-memory/#:~:text=Magnetic%20core%20memory%20was%20developed,electric%20current%20in%20a%20circuit.

Previous video: https://www.youtube.com/watch?v=paQ3zIsz1-8

Forum: https://www.eevblog.com/forum/blog/eevblog-1713-crazy-density-magnetic-core-memory!/

Web Site: http://www.eevblog.com
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#ElectronicsCreators #vintagecomputers #magneticcore
...
https://www.youtube.com/watch?v=pG9m4fN71rQ

A tour inside the brand new CSIRO Mobile Mission Control & Operations Centre, built inside a b-double truck. Dr Mark Dunn gives us a tour of the new fitout.
https://research.csiro.au/moc/

Purpose-built, the b-double trailer deploys into a fully operational mission control centre that can accommodate up to 30 mission operators, each supported by configurable multi-monitor stations and mission-status displays. Onboard, satellite, 4G, integrated radio and vibration-tolerant servers ensure connectivity, even in remote locations. The mobile Mission Operations Centre is powered by a battery-backed solar system with generator fallback, enabling sustainable, off-grid operation across Australia's geographically dispersed launch sites.

Forum: https://www.eevblog.com/forum/blog/eevblog-1712-csiro-mobile-space-mission-control-centre/

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#IAC2025 #Space #CSIRO
...
https://www.youtube.com/watch?v=rXQzavvMiVc