EEVblog

Three ways to get your PCB design rejected by your PCB manufacturer. 1) Imperial/Metric conversion 2) Unexpected Trace/Space specifications 3) Goofing the Gerber resolution. Forum: https://www.eevblog.com/forum/blog/eevblog-1327-3-ways-to-fail-at-pcb-manufacture/

Two almost identical complex designs published at almost the same time? How does that happen? Let’s go back to 1996 and see how similar Dave’s PC Logic Analyser design is to one published in Elektor Electronics magazine. Forum: https://www.eevblog.com/forum/blog/eevblog-1326-how-engineering-minds-think-alike/

Part 2 in designing a better uCurrent. A datasheet shootout between the Maxim MAX4239 and the TI OPA189 A deeper dive into the datasheet specs from the previous video, looking at gain bandwidth product, noise, supply current and voltages, offset voltages histograms, input bias currents, recovery and settling time, and slew rates. https://www.ti.com/lit/ds/symlink/opa189.pdf https://datasheets.maximintegrated.com/en/ds/MAX4238-MAX4239.pdf Forum: ...

Dave shows how to use reference waveforms to capture, compare and time correlate more then one signal at a time on your oscilloscope when you just can’t hold all those probes at once. Forum: https://www.eevblog.com/forum/blog/eevblog-1324-scope-trick-2-probes-1-hand/

Dave analyses a PCB layout from the EEVblog forum and covers all sorts of tips for SMD layout, component placement, routing, layer stackup, controlled impedance traces, supply planes and power bypassing. Original forum thread: https://www.eevblog.com/forum/beginners/first-4-layer-pcb-traces-on-each-layer-a-good-idea/ Forum: https://www.eevblog.com/forum/blog/eevblog-1323-pcb-layout-review-analysis/

Repairing a JBL LSR308 studio monitor speaker. Digital troubleshooting in a speaker? Yep, that’s a thing! How to systematically track down a fault and *know* that part has failed. Forum: https://www.eevblog.com/forum/blog/eevblog-1322-jbl-lsr308-studio-monitor-speaker-repair/

The SunPlower is supposed to be able to power mobile phone towers, propel boats and submarines, and fly you around in an Air-Taxi! Let’s turn flat solar panels into wind turbine blades! The laws of physics and engineering might have a lot to say about that… Subscribe on Library: https://lbry.tv/@eevblog:7 Forum: https://www.eevblog.com/forum/blog/eevblog-1321-sunplower-dumbest-idea-since-solar-roadways!/

Don’t be caught out by embarrassing premature triggering! Dave demonstrates how and why your oscilloscope may trigger before it’s supposed to, and how to solve it. Forum: https://www.eevblog.com/forum/blog/eevblog-1320-premature-oscilloscope-triggering/

The TS80P is the upgrade to the TS80, Dave’s previous favorite portable soldering iron. But with added USB-PD and 30W vs 18W. Various Aliexpress stores: https://s.click.aliexpress.com/e/_BfZODpxj https://s.click.aliexpress.com/e/_dUG2CxP TC66 USB-C PD Power Monitor/Logger: https://s.click.aliexpress.com/e/_Bf8wne37 Forum: https://www.eevblog.com/forum/blog/eevblog-1319-new-ts80p-portable-usb-pd-soldering-iron-review/

Is there a better chopper/auto-zero amplifier than the MAX4239 used in the uCurrent? A look at the exciting world of parametric searching for components. Follow along as Dave looks for a new state-of-the-art opamp. Success not guaranteed!