EEVblog
384 episodes - English - Latest episode: 17 days ago - ★★★★★ - 79 ratingsNo Script, No Fear, All Opinion
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Episodes
EEVblog 1449 – What Causes Excess Battery Drain? (BM235)
January 21, 2022 02:24 - 19 minutes - 219 MB VideoA BM235 customer has a BM235 that drains the batteries in OFF switch mode, lets look at the PCB to find out the possible culprits. Potentially applicable to any battery powered product. Forum: https://www.eevblog.com/forum/blog/eevblog-1449-what-causes-excess-battery-drain-(bm235)/
EEVblog 1448 – Convert a Fluke 77 IV to True RMS for 10 CENTS!
January 21, 2022 02:15 - 23 minutes - 227 MB VideoHow to convert a Fluke 77 IV average responding multimeter into a True RMS model 177 for 10 cents. *Plus calibration gear Should also work for converting a Fluke 83V to 87V True RMS measurement vs Average Responding And how to calibrate a Fluke multimeter. Fluke 87V service manual with schematic: https://xdevs.com/doc/Fluke/87V/Fluke_87V_Full_service_manual_with_schematic_and_electrical_parts_list_Service_Manual-87VANFullService.pdf 00:00 – Hacking ...
EEVblog 1447 – EXPENSIVE Fluke vs CHEAPER Brymen – Teardown
January 06, 2022 03:04 - 29 minutes - 664 MB VideoWhy are Fluke multimeters so expensive? PART 2 A teardown of the Fluke 70/170 series vs the Brymen BM786. Is there any design and construction difference that justifies 2-3 times the price? 00:00 – Fluke vs Brymen 01:07 – The Yellow Peer Pressure 01:57 – Fluke 77/177 vs Brymen BM786 04:01 – Ruggedness 05:05 – ...
EEVblog 1446 – Analog Watt Hour Meters are AMAZING!
December 27, 2021 05:19 - 29 minutes - 493 MB VideoAnalog Watt Hour energy meters are fascinating! How they work, teardown, and experiments. Thanks to Max Button for sending this in to the mailbag. 00:00 – Watt Hour Energy Meters 02:11 – Teardown 05:13 – What’s to stop it taking off? 06:40 – Does it work? Testing with a load. 07:24 – Can you get ...
EEVblog 1445 – How to Simulate an Oscilloscope Probe in LTSPICE
December 22, 2021 00:01 - 19 minutes - 131 MB VideoHow to simulate a x1 oscilloscope probe in LTSPICE. And how to use the lossy transmission line model in practice with the spice directive. Forum: https://www.eevblog.com/forum/blog/eevblog-1445-how-to-simulate-an-oscilloscope-probe-in-ltspice/
EEVblog 1444 – XMAS Mailbag!
December 15, 2021 06:38 - 1 hour - 1.06 GB VideoXMAS Mailbag featuring Mrs EEVblog, Sagan, and Huxley! Forum: https://www.eevblog.com/forum/blog/eevblog-1444-xmas-mailbag/ SPOILERS: Badge https://bit.ly/3m3t4Yj RF Antenna DigitalCool PCB Coaster: https://www.tindie.com/stores/digitalcool/ Neon photos from a future Indian EE Casio OH-7000G overhead projector calculator Trevor’s Bench https://www.youtube.com/c/TrevorsBench Circuit Mess Nibble STEM kit: https://circuitmess.com/nibble/ kWh meter Spotty solder paste dispenser: https://avdweb.nl...
EEVblog 1443 – They Don’t Teach This in School! (Coherence)
December 15, 2021 06:35 - 29 minutes - 361 MB VideoA follow-up video to the Electrodynamic Shaker, showing you the critical importance of Coherence measurement. Something you’ll only get taught in the school of hard knocks! Using the Ling Electrodynamic shaker, a measurement accelerometer, and a Dynamic Signal Analyser to set up a vibration test system. 00:00 – Electrodynamic Shaker 01:20 – The most inportant ...
EEVblog 1442 – DON’T DO THIS!
December 04, 2021 02:42 - 23 minutes - 335 MB VideoAn innocent TO-220 regulator gets tortured using a mystery device from the bunker. The art of environmental PCB testing. 00:00 – What is this thing? 01:00 – I used to use these all the time 02:40 – Electrodynamic Shaker 03:56 – How PCB’s are vibration tested 07:00 – Teardown 08:10 – Accelerometers 12:27 – The ...
EEVblog 1441 – Electric Buses are NOT a SCAM (Adam Something)
December 03, 2021 05:40 - 29 minutes - 182 MB VideoRepsonding to Adam Something’s video claiming that electric buses are a scam. Lets analyse his claims and look at what’s really happening with the cost benefit anlysis of electric buses vs diesel and electric trolley buses. Adam’s video: https://www.youtube.com/watch?v=AqHsXv7Umvw 00:00 – Electric buses are a scam 01:20 – The claims 01:50 – Growth of electric ...
EEVblog 1440 – Pentax Film Camera TEARDOWN
December 03, 2021 05:36 - 28 minutes - 563 MB VideoTeardown of a mid 90’s vintage Pentax IQZoomEZY film camera. Forum: https://www.eevblog.com/forum/blog/eevblog-1440-pentax-film-camera-teardown/
EEVblog 1439 – Analysing Veritasium’s Electricity Misconceptions Video
November 28, 2021 22:33 - 45 minutes - 251 MB VideoDave analyses Veritasium’s video “The Big Misconception About Electricity” and how energy flows in the Poynting vector in the electromagnetic field OUTSIDE the wire instead of inside the wire. 00:00 – Veritasium’s video “The Big Misconception About Electricity” 00:32 – Rection to the points in the video 01:11 – This is a bit MISLEADING! 02:28 ...
EEVblog 1438 – The TOP 5 Jellybean Regulators & References
November 18, 2021 11:07 - 44 minutes - 313 MB VideoDave looks at his TOP 5 (plus change) Jellybean Voltage Regulators and References, and explains why you need to know them. 00:00 – Jellybean Voltage Regulator & References 01:52 – 78xx Linear Voltage Regulator 08:01 – Adjustable Voltage Regulator 13:52 – 1117 Low Dropout Regulator 15:21 – LDO Stability 20:01 – LM4040/4041 Voltage Reference 24:38 ...
EEVblog 1437 – Zappi 7kW Electric Car Charger TEARDOWN + EXPERIMENT
November 14, 2021 23:30 - 29 minutes - 351 MB VideoHow does an Electric Car charger work? A teardown of the Myenergi Zappi 7kW EVSE and experiments demonstrating how the car detection system and charge mode works. 00:00 – Zappi 7kW Single Phase EVSE Charger 02:46 – Type 2 Charging Standards 08:30 – Teardown 17:32 – Power Up 20:56 – Experiments! Forum: https://www.eevblog.com/forum/blog/eevblog-1437-zappi-7kw-electric-car-charger-teardown-experiment/ Installation & ...
EEVBlog 1436 – The TOP 5 Jellybean OPAMP’s
November 14, 2021 23:23 - 27 minutes - 230 MB VideoDave looks at his TOP 5 (plus change) Jellybean OPAMP’s, and explains why you need to know them. Forum: https://www.eevblog.com/forum/blog/eevblog-1436-the-top-5-jellybean-opamps/ 00:00 – Jellybean OPAMP’s 01:47 – LM358 07:51 – FET Input TL071/72/74 11:28 – CMOS LMV358 15:17 – LM324 17:23 – The LM321 is NOT a thing 19:09 – Oh, all right, the LM741 19:41 ...
EEVblog 1435 – The World’s Most EXPENSIVE Catalog IC
November 14, 2021 23:17 - 26 minutes - 146 MB VideoDave goes hunting for the most expensive IC on Digikey and ends up finding a bunch of unusual stuff! Forum: https://www.eevblog.com/forum/blog/eevblog-1435-the-worlds-most-expensive-catalog-ic/
EEVblog 1434 – Cadex C7000 Battery Analyser Teardown
November 04, 2021 00:52 - 26 minutes - 479 MB VideoTeardown of a Cadex C7000 commercial battery analyser. Forum: https://www.eevblog.com/forum/blog/eevblog-1434-cadex-c7000-battery-analyser-teardown/ 00:00 – Cadex C7000 Battery Analyser 04:20 – Universal probe teardown 09:45 – Main unit teardown 22:14 – Power up
EEVblog 1433 – More Adventures in Sony RX100 Repair (Part 3)
November 04, 2021 00:50 - 1 hour - 737 MB VideoDave eventually finds the (a) fault in the Sony RX100 MkIV camera. WARNING: No happy ending, just an hour and ten minutes of Dave getting his arse kicked by Murphy. 00:00 – Sony RX100 Mk4 Repair Part 3 01:03 – Down the schematic rabbit hole 06:23 – That looks important 15:46 – The least likely ...
EEVBlog 1432 – Owning an ELECTRIC CAR for 12 Months & 17,000km
October 27, 2021 23:30 - 16 minutes - 1.07 GB VideoDave shares his thoughts on owning a fully electric Hyundai IONIQ car after 12 Months & 17,000km Forum: https://www.eevblog.com/forum/blog/eevblog-1432-owning-an-electric-car-for-12-months-17-000km/
EEVblog 1431 – Keysight EDU33212A Function Generator Teardown
October 25, 2021 04:35 - 16 minutes - 170 MB VideoTeardown of the new Keysight EDU33212A 20MHz Function Generator Odysee exclusive: https://odysee.com/@eevblog:7/Photo-Spectrometer-Teardown:7 Forum: https://www.eevblog.com/forum/blog/eevblog-1431-keysight-edu33212a-function-generator-teardown/
EEVblog 1430 – Rent vs Buy – My $400,000 MISTAKE!
October 22, 2021 03:48 - 29 minutes - 187 MB VideoDave goes through the real calculations of what it ultimately cost him to rent an office vs buying an office back on 2015. And on the importance of being your own bank, compounding interest reduction, paying off your loan early, and offset accounts for cash flow benefits. Forum: https://www.eevblog.com/forum/blog/eevblog-1430-rent-vs-buy-my-$400-000-mistake!/
EEVblog 1429 – Sony RX100 Camera Troubleshooting Part 2
October 22, 2021 03:41 - 29 minutes - 330 MB VideoPART 2 Troubleshooting the Sony RX100 Mk4 camera. Service manual: https://www.eevblog.org/files/dsc-rx100m4-sm2.pdf Schematics: https://www.eevblog.org/files/dsc-rx100m4.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1428-sony-rx100-camera-repair-and-then-wtf!/
EEVblog 1428 – Sony RX100 IV Camera Repair and then WTF!
October 15, 2021 07:44 - 57 minutes - 1.04 GB VideoDave “repairs” his Sony RX100-IV camera only to go WTF?! A long video that is mostly disassembly and reassembly, so use the time markers if you are bored. 00:00 – Sony RX100 Mk4 Repair 04:30 – Teardown 14:44 – Dave gets ZAPPED! 23:19 – Processor Board 25:51 – Lens assembly 30:00 – Finally IN to ...
EEVblog 1427 – An INFURIATING Electronics Exam Question!
October 15, 2021 07:41 - 28 minutes - 191 MB VideoFrom the EEVblog forum, an infuriating electronics exam question! Plus a bonus job interview tip. 00:00 – The Forum question 02:12 – Is this a good job interview question? 03:36 – Dave’s working… 07:04 – The Solution 08:08 – Other forum responses 11:40 – Kirchoff’s Current Law MUST Hold! 12:51 – REBEL against The System! ...
EEVblog 1426 – This Problem can DROP Solar Output by 20%
October 09, 2021 13:16 - 29 minutes - 421 MB VideoDave tracks down why his old 3kW system that was moved was now showing a 20% drop in output power at the same time every day. Is it inverter temperature, inverter mains voltage, solar panel cracking, dodgy connection resistance, or shading? Forum: https://www.eevblog.com/forum/blog/eevblog-1426-this-problem-can-drop-solar-output-by-20/
EEVblog 1425 – Fluke Repair 2 Electric Boogaloo
October 08, 2021 22:32 - 24 minutes - 471 MB VideoPart 2 of the Fluke 23 multimeter repair by digging into the bunker meter archives from episode #84 Experimenting with alfoil Forum: https://www.eevblog.com/forum/blog/eevblog-1425-fluke-repair-2-electric-boogaloo/
EEVblog 1424 – Fluke 23 Multimeter Repair
October 06, 2021 10:49 - 21 minutes - 364 MB VideoRepair of an original Fluke 23 Multimeter. Forum: https://www.eevblog.com/forum/blog/eevblog-1424-fluke-23-multimeter-repair/
EEVblog 1423 – Magic Repair Smoke!
October 02, 2021 03:20 - 26 minutes - 462 MB VideoDave released the magic smoke during a repair! Brain was not engaged… 00:00 – Alien LED driver 01:34 – New microscope measurment setup! 02:46 – Teardown 07:45 – Brown Black Burnt 09:31 – This sucks! 16:08 – BANG! 18:49 – It seemed reasonable at the time… 19:41 – Reverse Engineering
EEVblog 1422 – CAUSE of the Tesla Victoria Big Battery Fire
October 02, 2021 03:17 - 29 minutes - 158 MB VideoThe report has been released on the Tesla Moorabool Victoria Big battery fire by Energy Safe Victoria, let’s go through it and discuss the cause. https://esv.vic.gov.au/news/cooling-system-leak-led-to-victorian-big-battery-fire/ Report: https://esv.vic.gov.au/wp-content/uploads/2021/09/VBB_StatementOfFindings_FINAL_28Sep2021.pdf Forum: https://www.eevblog.com/forum/renewable-energy/australias-biggest-tesla-battery-storage-system-at-moorabool-is-on-fire/msg3715759/#msg3715759 00:00 – Overview ...
EEVblog 1421 – Epson Dumpster Hack
September 28, 2021 04:06 - 13 minutes - 154 MB VideoDave hacks a dumpster find to power it up because of a PITA power connector. Then does some bonus PCB imaging. Forum: https://www.eevblog.com/forum/blog/eevblog-1421-dumpster-hack/
EEVblog 1420 – Mailbag
September 23, 2021 22:48 - 58 minutes - 1.02 GB Video1 hour Mailbag! Forum: https://www.eevblog.com/forum/blog/eevblog-1420-mailbag/ SPOILERS: 00:00 – Pleo the Dinosaur! The designer talking about Pleo: https://www.youtube.com/watch?v=BOba_zGoZq8 The Commodore Collector: https://www.thecommodorecollector.com/ 06:23 – Amazing workbench of the week from voltnut Xdevs! https://xdevs.com/ 14:25 – DEC VAX 370/11 135A 5V PSU teardown 22:22 – Emizon MCM Electronics alarm panel + AdPlayer LCD screen Mike’s LED Shed: ...
EEVblog 1419 – Sinclair C5 Restoration – Part 2
September 23, 2021 22:43 - 19 minutes - 234 MB VideoRIP Sir Clive Sinclair. Dave finally gets around to starting to take apart and restore the classic Sinclair C5 electric vehicle. Forum: https://www.eevblog.com/forum/blog/eevblog-1420-sinclair-c5-restoration-part-2/
EEVblog 1418 – The Most EMBARRASSING Repair!
September 18, 2021 13:13 - 25 minutes - 316 MB VideoThis “Repair” of a Keysight DSOX1102G oscilloscope was a tad embarrassing… Forum: https://www.eevblog.com/forum/blog/eevblog-1418-the-most-embarrassing-repair/
EEVblog 1417 – Alternating Current AC Basics – Part 1
September 09, 2021 07:55 - 39 minutes - 442 MB VideoFollowing in from the DC circuit fundamanetals series starts the AC circuti fundamentals series. This part 1 looks at: – What is Alternating Current – How AC is created using a generator – Angular Frequency – The sinusoidal waveform, benefits and downsides – Average, peak, peak to peak, and RMS waveforms, calculation and conversions. – ...
EEVblog 1416 – Random TEARDOWN: Sennheiser EW100 True Diversity Receiver
September 04, 2021 05:05 - 29 minutes - 516 MB VideoRandom teardown from the lab, a Sennheiser EW100 true diversity wireless microphone receiver. Plus an explanation of how antenna diversity works. Transmitter and camera receiver teardown: https://www.youtube.com/watch?v=dFvN04Woihk Gary: https://twitter.com/Gary43696951 Forum: https://www.eevblog.com/forum/blog/eevblog-1416-random-teardown-sennheiser-ew100-true-diversity-receiver/
EEVblog 1415 – Reverse Engineering the DP10007 Differential Probe
August 29, 2021 23:52 - 28 minutes - 174 MB VideoReverse engineering the Micsig DP10007 high voltage differential probe. Turning the PCB into a schematic. Forum: https://www.eevblog.com/forum/blog/eevblog-1415-reverse-engineering-the-dp10007-differential-probe/ Reverse enginering how-to for the Rigol oscilloscope: https://www.youtube.com/watch?v=lJVrTV_BeGg DIY light box for PCB photography: https://www.youtube.com/watch?v=6ZH2KeplSrs
EEVblog 1414 – Turning it up to 11 (1100V)
August 29, 2021 23:44 - 15 minutes - 260 MB VideoCan Dave destroy the Micsig DP10007 high voltage differential probe by turning the voltage up to 1100V RMS? Plus a teardown of course. https://www.eevblog.com/product/hvp70/ Forum: https://www.eevblog.com/forum/testgear/new-eevblog-hv-probe/
EEVblog 1413 – Oscilloscope Current Probe TEARDOWN + DEMO
August 21, 2021 03:37 - 29 minutes - 477 MB VideoTeardown and measurements with the Micsig CP2100B 2.5MHz oscilloscope current probe. Also a demonstration of mains switch mode power supply current and noise measurement, and also some performance tests. Use the coupon code FLUX for 15% off! And paying with crypto gets you a further discount on top of that! https://www.eevblog.com/product/cp2100b/ Or get the cheaper ...
EEVblog 1412 – Argon Ion Laser TEARDOWN!
August 19, 2021 12:22 - 29 minutes - 477 MB VideoDave tears down the 10W Coherent 300C Argon Ion laser. All 42kg, 1.2m and 24kW worth! The App Hour podcast episode: https://theamphour.com/521-outdoor-laser-projection-object-mapping-with-daryl-tewksbury/ Forum: https://www.eevblog.com/forum/blog/eevblog-1412-argon-ion-laser-teardown/
EEVblog 1410 – Mailbag
August 03, 2021 00:34 - 43 minutes - 731 MB VideoMailbag! Froum: https://www.eevblog.com/forum/blog/eevblog-1410-mailbag/ SPOILERS: 00:00 – Dancom RT403B 25W VHF Marine Transceiver teardown. 09:07 – Workbench of the week, Tony Albus: https://www.youtube.com/channel/UCwLPcv2xiA3D9lfGArF58ww TEA: https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/ 12:36 – Riedon SSA-100 100A Differential Isolated Current Sensor. https://riedon.com/ https://www.digikey.com/en/products/detail/riedon/SSA-100/12149327 22:19...
EEVblog 1409 – The DANGERS of Inductor Back EMF
July 31, 2021 11:13 - 29 minutes - 338 MB VideoA practical demonstration of Lenz’s law and back EMF in an inductive relay coil and how to solve it using a Freewheeling/Flywheel/Flyback/Snubber/Clamp diode. Also the downsides of clamping diodes, and switch arcing supression. Also a look at an AMAZING potential phenomenon you probably haven’t seen before! Actually, two rather cool things you probably haven’t seen ...
EEVblog 1408 – $5M WiGL Wireless Charging BUSTED!
July 31, 2021 11:08 - 56 minutes - 287 MB VideoWiGL have raised almost 5 MILLION dollars on StartEngine. What’s worse than another wireless charging technology startup? – One that doesn’t really have any original technology and simply uses off the shelf RF energy harvesting chips! This one is just embarrassing. And they want to comepete with Energous, WiTricity, Ossia and others, LOL. For a ...
EEVblog 1406 – DC Circuit Transients Fundamentals
July 13, 2021 02:48 - 39 minutes - 492 MB VideoThe conclusion of the DC circuit fundmentals tutorial series. How a capacitor and inductor works, parallel and series configurations, exponential rise and decay, time constants, and basic differential calculus. Energy storage in capacitors and inductors and how a collapsing inductor magnetic field can be both a problem and a benefit. Forum: https://www.eevblog.com/forum/blog/eevblog-1406-dc-circuit-transients-fundamentals/
EEVblog 1405 – Focusrite Scarlett Solo vs Rode AI-1 TEARDOWN
July 06, 2021 07:45 - 27 minutes - 541 MB VideoA side-by-side teardown of the Focusrite Scarlett Solo and the Rode AI-1 USB audio interface.
EEVblog 1404 – The Amazing HP 9845B Computer
July 06, 2021 07:41 - 43 minutes - 769 MB VideoThe HP9845B 16 bit computer was revolutionary in 1979 and the early 1980’s, find out why. The 9845C colour version of this created the amazing war room images for the movie War Games Forum: https://www.eevblog.com/forum/blog/eevblog-1404-the-amazing-hp-9845b-computer/
EEVblog 1402 – Rohde & Schwarz NGA100 PSU Teardown + GIVEAWAY
July 01, 2021 01:53 - 35 minutes - 217 MB VideoTeardown of the new NGA100 100V 2A NGA142/NGA102 Lab Power Supply, and a look at a few issues found. PLUS a GIVEAWAY of two units! https://www.rohde-schwarz.com/hk/products/test-and-measurement/dc-power-supplies/rs-nga100-power-supply-series_63493-959872.html Forum: https://www.eevblog.com/forum/blog/eevblog-1402-rohde-schwarz-nga100-psu-teardown-giveaway/ Forum GIVEAWAY: https://www.eevblog.com/forum/contests/giveaway-rohde-schwarz-nga102-psu/ Schools/Makerspace GIVEAWAY: https://www.eevblog...
EEVblog 1401 – DC Power, Efficiency, & Maximum Power Transfer Theory
June 21, 2021 23:30 - 23 minutes - 226 MB VideoDave closes out the basic DC circuit series with DC Power, Efficiency, & Maximum Power Transfer Theory tutorial. Includes Ohm’s law refresher. DC Fundamentals Forum: https://www.eevblog.com/forum/blog/eevblog-1401-dc-power-efficiency-maximum-power-transfer-theory/ Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK
EEVblog 1400 – Hard Drive Micro Actuators are AMAZING!
June 19, 2021 03:25 - 15 minutes - 275 MB VideoDave takes a closer look the micro actuator used in the 6TB Western Digital RED hard drive. Forum: https://www.eevblog.com/forum/blog/eevblog-1400-hard-drive-micro-actuators-are-amazing!/
EEVblog 1398 – Western Digital RED 6TB WD60EFRX Hard Drive TEARDOWN
June 14, 2021 01:13 - 29 minutes - 532 MB VideoDave’s Western Digital RED 6TB WD60EFRX NAS hard drive failed. Bugger the warranty, teardown time! Also, SMR vs CMR recording. Forum: https://www.eevblog.com/forum/blog/eevblog-1398-western-digital-red-6tb-hard-drive-teardown/
EEVblog 1395 – Onkyo Repair SUCCESS
May 21, 2021 22:38 - 580 MB VideoRepair success on the Onkyo TX-SR607 surround sound receiver. Forum: https://www.eevblog.com/forum/blog/eevblog-1395-onkyo-repair-success/
EEVblog 1394 – Onkyo Receiver Repair – Part 1
May 20, 2021 07:35 - 35 minutes - 557 MB VideoAn 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/