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EEVblog

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14:53

EEVblog 1629 – Dumpster Find: A3 Colour Photocopier

EEVblog ·

2024/07/13

A Konika Minolta bizhub C284e A3 colour photocopier found in the dumpster. Enjoy Dave’s embarrassment at the redundant teardown. Ebay listing for original modern art print: https://www.ebay.com.au/itm/226241082176 Forum: https://www.eevblog.com/forum/blog/eevblog-1629-dumpster-find-a3-colour-photocopier/

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40:47

EEVblog 1628 – Home Solar Power Re-Install + Upgrade...

EEVblog ·

2024/07/11

Reinstallation of the 5kW Enphase microinverter home solar power system, and installation of a new 5kW Deye Hybrid inverter string system did not go well… Forum: https://www.eevblog.com/forum/blog/eevblog-1628-home-solar-re-install-upgrade-fail/ Deye user manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf 00:00 – New Trina, old LG, and even older LG panels 03:44 – Salute the old Sunnyboy 3kW string inverter 05:23 – New 415W …

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EEVblog 1627 – Electronex: Engineering Consulting...

EEVblog ·

2024/07/04

A talk with Scott Williams from Xentronics at the Electronex show about freelancing and running an electronics design consultancy business. https://xentronics.com.au/ The Amp Hour Talk 1: https://theamphour.com/624-design-manufacturing-consulting-with-scott-williams-from-xentronics/ Talk 2: https://theamphour.com/645-moving-down-the-stack-with-scott-williams/ Forum: https://www.eevblog.com/forum/blog/eevblog-1627-electronex-engineering-consultancy-with-xentronics/

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12:50

EEVblog1626 – YOU HAD ONE JOB! (Solar Power Install...

EEVblog ·

2024/06/30

My solar power installer HAD ONE JOB but FAILED. A short story. LOL along as they attempt to reinstall and commision my Enphase microinverter solar power system. Aircon Install FAIL video: https://www.youtube.com/watch?v=XD5Emhqd5Ks Forum: https://www.eevblog.com/forum/blog/eevblog-1626-you-had-one-job!-(solar-power-install-fail)/

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11:16

EEVblog 1625 – Electronex: Scope Wars: The Rise of Uni-T

EEVblog ·

2024/06/30

Uni-T are making a surprising move into the mid end instrument market with some custom ASIC based oscilloscopes, spectrum analysers, signal generators and a bunch of other instruments. A talk with Mark Isherwood from Rapid-Tech, the Australian dealer for Uni-T. https://rapid-tech.com.au/uni-t-instruments/ Forum: https://www.eevblog.com/forum/blog/eevblog-1625-electronex-scope-wars-the-rise-of-uni-t/

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13:21

EEVblog 1624 – Electronex: Liquid Instruments Moku...

EEVblog ·

2024/06/25

An interview at the Liquid Instruments stand at Electronex 2024 about the Moku range of multi-function mixed signal oscilloscope, designed and built in Australia! Thanks to Ben Price for answering the questions even though he’s the mechnical engineer! https://www.liquidinstruments.com/ Forum: https://www.eevblog.com/forum/blog/eevblog-1624-electronex-liquid-instruments-moku-oscilloscope/

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41:14

EEVblog 1623 – Electronex 2024 Walkthrough

EEVblog ·

2024/06/25

Walkthrough of the 2024 Electronex trade show in Sydney. Forum: https://www.eevblog.com/forum/blog/eevblog-1623-electronex-2024-walkthrough/

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12:25

EEVblog 1622 – Don’t Make This Multimeter MISTAKE

EEVblog ·

2024/06/17

This is the biggest mistake beginners often make when using a multimeter ohms function. A customer returned an EEVblog BM235 multimeter because it was “Faulty” Was it? Let’s find out what happens when you try and measuse a CAN bus with a multimeter. Forum: https://www.eevblog.com/forum/blog/eevblog-1622-dont-make-this-multimeter-mistake/ 00:00 – Don’t measure a CAN bus with a multimeter! …

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33:16

EEVblog 1621 – Mailbag: RadiaCode Radiation Monitor +...

EEVblog ·

2024/06/17

More mailbag! A look at the RadiaCode Radiation Monitor, and the LattePanda Mu Intel N100 Compute Module. https://www.radiacode.com/ https://amzn.to/3yV5Gp4 https://www.lattepanda.com/lattepanda-mu https://www.dfrobot.com/kit-004.html Github: https://github.com/LattePandaTeam/LattePanda-Mu/tree/main/Electricals/Examples/%5BDFR1141%5DFull%20EVA%20Carrier%20for%20LattePanda%20Mu Part 2: https://www.youtube.com/watch?v=UE_srZZdPjM 00:00 – Mailbag 00:30 – Radiacode 103 Radiation Detector

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41:19

EEVblog 1620 – Deye Solar Hybrid Inverter EXTREME...

EEVblog ·

2024/06/06

Extreme teardown of the Deye SUN-5K-SG04LP1 5kW hybrid solar inverter. Will it contain the quality components claimed? Also a topology reverse engineering of all the stages. Hi-Res photos: 00:00 – A generous and coincidental donation from a viewer 00:37 – We have the brochure, let’s check the claims! 02:44 – Front panel PCB 03:46 – …

en-US

EEVblog 1618 – The Equation For Charge In A Capacitor

EEVblog ·

2024/05/22

How To Derive The Equation For Charge In A Capacitor, E = 1/2 C.V² NOTE: Re-edited from an old impromptu video to remove all unrelated stuff about the dumpster whiteboard I found. Forum: https://www.eevblog.com/forum/blog/eevblog1618-how-to-derive-the-equation-for-charge-in-a-capacitor/

en-US

EEVblog 1617 – Architectural LED Lighting Build + Test

EEVblog ·

2024/05/20

Building and testing an architectural wall wash LED Lighting solution. Part 2: https://www.youtube.com/watch?v=5mueaTsus8o Counting LED photons: https://www.youtube.com/watch?v=TJcMgoJ4DOE Forum: https://www.eevblog.com/forum/blog/eevblog-1617-architectural-led-lighting-build-test/ Datasheets: https://havit.com.au/products/hv9693-6080-deep-square-up-down-aluminium-profile https://cdn.shopify.com/s/files/1/1760/2029/files/HV9723-IP20-240-XK-2_Spec_Sheet_JUN23.pdf

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EEVblog 1616 – Weller Zero Smog Fume Extractor Review

EEVblog ·

2024/05/18

How much does the Weller HEPA 13 Zero Smog EL Kit fume extractor suck? https://www.weller-tools.com/eu/gb/filtration/products/solder-fumes/zero-smog-el-kit-1 00:00 – Unboxing the Weller Zero Smog EL kit 04:52 – Teardown 10:53 – Soldering test 13:44 – Side view soldering test Part 2: https://www.youtube.com/watch?v=yi5pb_l8U94 Cheap HEPA fume extractor: https://www.youtube.com/watch?v=ffaiKZMU0Lw Forum:

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EEVblog 1615 – Dumpster Dive HP Pro One PC

EEVblog ·

2024/05/17

It’s been slim pickings in the dumpster room in recent times, will this HP Pro One 400 all-in-one touch screen PC be a winner? Part 2: https://www.youtube.com/watch?v=NLwgFYt1pjA Lenovo IdeaCentre Dumpster find: https://www.youtube.com/watch?v=-FszeHoK2Ck Forum: https://www.eevblog.com/forum/blog/eevblog-1615-dumpster-dive-hp-pro-one-pc/

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EEVblog 1614 – Circuit Design TIP: Crystal Oscillators

EEVblog ·

2024/05/11

You can easily replace any chip crystal circuit with a dedicated external crystal oscillator. Reducing your BOM count, and making your design easier, smaller, and potentially more robust. Cyber City Circuits: https://www.youtube.com/@cybercitycircuits https://twitter.com/MakeAugusta/status/1788651197055827992 Forum: https://www.eevblog.com/forum/blog/eevblog-1614-circuit-design-tip-crystal-oscillators/

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eevBLAB 118 – NEW Apple iPad Pro: Volumetric...

EEVblog ·

2024/05/08

Apple just released the new iPad Pro M4. Normally I wouldn’t care, but it’s about Engineering vs Marketing, and we can run some numbers, so let’s dive in. What can engineers do with an extra mm in thickness? How about double the battery capcity? Better repairability would have been nice too! Featuring DaveCalc. https://twitter.com/peteoxenham/status/1788016699477983699 Forum: …

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EEVblog 1613 – Audiophile REPAIR: $4500 Chord Hugo DAC

EEVblog ·

2024/05/06

Simple repair on the neighbours $4500 Audiophile Chord Hugo DAC. Replacing the rechargeable lithium ion batteries wasn’t quite as simple as expected though… And is this thing worth $4500? Forum: https://www.eevblog.com/forum/blog/eevbog-1613-audiophile-repair-chord-hugo-dac/

en-US

EEVblog 1612 – Siglent SDS1000X HD 12 bit...

EEVblog ·

2024/04/27

Siglent SDS1000X HD 12 bit Oscilloscope Teardown and brief play, noise measurement, and comparison to the SDS2000X HD Hires photos: SDS2000X HD Teardown: https://www.youtube.com/watch?v=lUAevbBh0rQ Forum: https://www.eevblog.com/forum/blog/eevblog-1612-siglent-sds1000x-hd-12-bit-oscilloscope-teardown/ 00:00 – Siglent SDS1000X HD 12 bit Oscilloscope 00:39 – Unboxing problem… 01:21 – For the film afficionardoes 01:31 – Brief look over 04:33 – Comparison to SDS2000X

en-US

EEVblog 1611 – Top 5 Jellybean 7400 & 4000 Logic

EEVblog ·

2024/04/20

The TOP 5 Jellybean 7440 and 4000 series logic chips. Forum: https://www.eevblog.com/forum/blog/eevblog-1611-top-5-jellybean-7400-4000-logic/ Schmitt Trigger video: https://www.youtube.com/watch?v=Ht48vv0rQYk 00:00 – Top 5 TTL and CMOS Jellybean chips 00:37 – Different 7400 series family types 01:52 – What makes a Jellybean component 3:27 – CD4051 / CD4052 / CD4053 Analog Multiplexer Switch 17:42 – 74HC595 8 Bit Latched …

en-US

EEVblog 1610 – Deye 5kW Hybrid Solar Inverter

EEVblog ·

2024/04/14

A look at the Deye 5kW Hybrid Solar Inverter and attempted teardown. SUN-5K-SG04LP1-AU Forum: https://www.eevblog.com/forum/blog/eevblog-1610-deye-hybrid-solar-inverter/ Joule Power: https://joulepower.com.au/ Teardown video: https://www.youtube.com/watch?v=UO1lDaIDBo0 Manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf

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