EEVblog

WiGL was not content with raising $5M for their wireless power mobile phone charging boondoggle last time, so they are raising even more money, with even more laughable bad test results! Support the EEVblog on: Locals: https://locals.com/member/EEVblog Patreon: http://www.patreon.com/eevblog Odysee: https://odysee.com/@eevblog:7 EEVblog Web Site: http://www.eevblog.com Main Channel: http://www.youtube.com/EEVblog EEVdiscover: https://www.youtube.com/eevdiscover AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators

Handy tip on how you can use your multimeters capacitance range to measure inductors, using the reciprocal method. Forum: https://www.eevblog.com/forum/blog/eevblog-1465-measure-inductors-using-a-multimeter/ Support the EEVblog on: Locals: https://locals.com/member/EEVblog Patreon: http://www.patreon.com/eevblog Odysee: https://odysee.com/@eevblog:7 EEVblog Web Site: http://www.eevblog.com 2nd Channel: http://www.youtube.com/EEVblog2 EEVdiscover: https://www.youtube.com/eevdiscover AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Multimeter #Measurement

Support the EEVblog on: Locals: https://locals.com/member/EEVblog Patreon: http://www.patreon.com/eevblog Odysee: https://odysee.com/@eevblog:7 EEVblog Web Site: http://www.eevblog.com 2nd Channel: http://www.youtube.com/EEVblog2 EEVdiscover: https://www.youtube.com/eevdiscover AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators

What's in Dave's Mailbag? Forum: https://www.eevblog.com/forum/blog/eevblog-1463-mailbag/ SPOILERS: 00:00 - Mailbag Bonanza! 03:24 - 3M IDC Crimping tool 04:57 - Bulova Accutron Watchmaster battery tester 06:52 - The best button EVER! 07:24 - Continentak Specialties Corporation breadboard 07:53 - Moving Iron AC ammeter 09:29 - Analog Devices power brick 09:57 - Heathkit Digital Design Experimenter 15:31 - Miniware e-Design ET15 motion control electic screwdriver http://www.miniware.com.cn/product-category/pocket-screwdriver/ 31:06 - G-Tronics IoT Proto Shield Plus development board https://www.gtronicsshop.com/en/15-iot-proto-shield-plus 37:28 - DIY through hole kit HP Voyager calculators PX-15C PX-16C PX-41C https://paxer.net/voyager/ Support the EEVblog on: Locals: https://locals.com/member/EEVblog Patreon: http://www.patreon.com/eevblog Odysee: https://odysee.com/@eevblog:7 EEVblog Web Site: http://www.eevblog.com 2nd Channel: http://www.youtube.com/EEVblog2 EEVdiscover: https://www.youtube.com/eevdiscover AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators

Don't buy the new Dymo 550 or 5XL label printers, they now use DRM NFC/RFID technology in the paper rolls to force you into using their labels at 10 TIMES the cost! EFF: https://www.eff.org/deeplinks/2022/02/worst-timeline-printer-company-putting-drm-paper-now NXP NFC chip: https://www.nxp.com/docs/en/data-sheet/SL2S2602.pdf SLRC610 RFID/NFC frontend: https://au.mouser.com/datasheet/2/302/SLRC610-1127743.pdf Teardown PCB photos: https://www.eevblog.com/2022/03/09/eevblog-1462-dymo-label-drm-sucks/ Forum: https://www.eevblog.com/forum/reviews/dymo-550-thermal-printer-drm-hacking/ 00:00 - Dymo SUCKS! 01:49 - The reviews are not kind! LOL 04:37 - ANYTHING will be cheaper than Dymo 05:38 - Who is this Newall company? 06:33 - How you can fight back against DRM 07:26 - Think of the supply chain! 08:17 - Reading the RFID/NFC tag data 11:39 - Proof they are incrementing a counter in the RFID chip 12:38 - Lets print 13:29 - Teardown 14:52 - UART/BOOT investigation 16:15 - Logic analyser time 20:01 - Packet testing when removing and inserting the roll Support the EEVblog on: Locals: https://locals.com/member/EEVblog Patreon: http://www.patreon.com/eevblog Odysee: https://odysee.com/@eevblog:7 EEVblog Web Site: http://www.eevblog.com 2nd Channel: http://www.youtube.com/EEVblog2 EEVdiscover: https://www.youtube.com/eevdiscover AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Dymo #DRM

Join Dave in the search for an alternative replacement MOSFET. It might not be as easy as it sounds. Talk about how to identify components and function, MOSFET parameters, and using google and parametric searches on supplier and manufacturer websites. AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators

Dave repairs his failed Aputure Amaran HR672C LED studio light which is mysteriously killing batteries and falsely indicates charging when no batteries are installed. And salvaging the spare part from an old dumpster laptop! Forum: https://www.eevblog.com/forum/blog/eevblog1460-interesting-repair-of-an-aputure-amaran-led-studio-light/ Support the EEVblog on: Utreon: https://utreon.com/c/EEVblog/ Patreon: http://www.patreon.com/eevblog Odysee: https://odysee.com/@eevblog:7 EEVblog Web Site: http://www.eevblog.com 2nd Channel: http://www.youtube.com/EEVblog2 EEVdiscover: https://www.youtube.com/eevdiscover AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Repair #Aputure

Is it worth salvaging parts from a consumer HP office Inkjet Printer/Scanner from the dumpster? Scrapping a dumpster laser printer for parts: https://www.youtube.com/watch?v=hy1fOSj8_uw Forum: https://www.eevblog.com/forum/blog/eevblog-1459-is-it-worth-parts-salvaging-an-inkjet-printerscanner/ 00:00 - Dumpster HP Officejet Pro 8710 05:12 - The main PCB 08:50 - The scanner 11:43 - The scanner sensor 12:37 - The print head 19:52 - You can't be serious? The used Ink capture system 22:13 - The power brick 24:18 - THAT'S all we got? LOL Support the EEVblog on: Locals: https://locals.com/member/EEVblog Patreon: http://www.patreon.com/eevblog Odysee: https://odysee.com/@eevblog:7 EEVblog Web Site: http://www.eevblog.com 2nd Channel: http://www.youtube.com/EEVblog2 EEVdiscover: https://www.youtube.com/eevdiscover AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Dumpster #Salvage

Dave released the magic smoke during a repair! Brain was not engaged... Astable Aliens: https://www.youtube.com/watch?v=rgbg4jLFVBc Forum: https://www.eevblog.com/forum/blog/eevblog-1423-magic-repair-smoke/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Repair #ReverseEngineering

1 hour Mailbag! Forum: https://www.eevblog.com/forum/blog/eevblog-1420-mailbag/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators

RIP 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/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Sinclair #ElectricCar

This "Repair" of a Keysight DSOX1102G oscilloscope was a tad embarrassing... Forum: https://www.eevblog.com/forum/blog/eevblog-1418-the-most-embarrassing-repair/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Repair #Hack

Following 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. - Non-sinusoidal waveforms - Crest factor and its impact on multimeter RMS measurement DC theory series playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK Forum: https://www.eevblog.com/forum/blog/eevblog-1417-alternating-current-ac-basics-part-1/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators

Random 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/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Sennheiser #Teardown

Reverse engineering the Micsig DP10007 high voltage differential probe. Turning the PCB into a schematic. 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 Forum: https://www.eevblog.com/forum/blog/eevblog-1415-reverse-engineering-the-dp10007-differential-probe/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #HowTo #ReverseEngineering

Can 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/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #HighVoltage #Teardown

Teardown 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 lower bandwidth 800KHz CP2100A model: https://s.click.aliexpress.com/e/_A1gq4i https://s.click.aliexpress.com/e/_AKl2Y2 Oscilloscope standard deviation measurement: https://www.youtube.com/watch?v=G8Qoj3TpO9A Forum: https://www.eevblog.com/forum/blog/eevblog-1413-micsig-cp2100b-current-probe-teardown-and-test/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Teardown #Review

Dave 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/ PSU teardown: https://www.youtube.com/watch?v=N8hz3MGS01E Laservision Australia: https://www.youtube.com/user/LaservisionAustralia Forum: https://www.eevblog.com/forum/blog/eevblog-1412-argon-ion-laser-teardown/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Laser #Teardown

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 - DODGY! Soviet era mains rechargable torch 27:36 - Jon Newcomb's Microcontroller Proto Boards https://www.ebay.com/usr/jon_newcomb 33:57 - Affable Snake Breadboard LED bargraph https://www.tindie.com/products/affablesnake/slim-breadboard-indicator-green-8-position/ 35:34 - Mystery $2 ebay item DESTROYED by Widlarizer! 37:47 - Present from a 13yo viewer 39:40 - Multimeter PicoProbes: https://www.tindie.com/products/twires/picoprobes/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Mailbag

A 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 before. Along with transistor ratings, transistor storage current, and Collector-Emitter breakdown voltage, there is a lot to unpack in this video. This is a follow-on from the DC Transients Fundamentals video: https://www.youtube.com/watch?v=8nyNamrWcyE Forum: https://www.eevblog.com/forum/blog/eevblog-1409-the-huge-trap-of-inductor-back-emf/ AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Tutorial #Inductors