EEVblog

Teardown Tuesday Dave’s Samson C01U USB Microphone got caught up in the flood, let’s take a look inside. Forum HERE

April 4th 2009 Dave started the EEVBlog Forum HERE

Experimenting with etching your own PCB’s by concentrating existing ferric chloride levels in tap water. How well does it work? Forum HERE

Designing your own custom heat sink is cheaper and easier than you might think. At look at why you might want to design your own heat sink, the costs, the advantages and disadvantages, design considerations for surface mount PCB’s, air convection, and mechanical DRC, and die-cast vs machining. SMD thermal design video: https://www.youtube.com/watch?v=2ygnAv6koSQ Forum HERE

Mrs EEVblog broke the headphone socket on Dave’s Sony TV. Soldering iron time.

Dave uncovered the first edition of Australian Electronics Monthly magazine from July 1985, by Roger Harrison, and featuring a classic David Tilbrook MOSFET amplifier design, vintage computer, vintage analog scopes and more. Forum HERE

More on the Gigatron 4 layer PCB for EMC compliance testing. Swapping the inner and outer plane layers, experimenting with KiCAD and investigating several issues with the tool. Talk on gerber generation, PCB checklists, PCB design for manufacture, PCB stackup, and uploading to JLCPCB for 4 layer manufacture. Forum HERE

Repairing the faulty LCD in the Voltech PM300 power meter. Forum HERE

Digital energy saver boxes that claim to reduce your power bill by up to 50%, are… SPOILER ALERT: Complete bullshit. Forum HERE

A look at three major products in this lengthy Mailbag. SPOILERS: LabJack T7-Pro Multifunction DAQ with WiFi, Ethernet, and USB 15:56 Balena Fin Raspberry Pi Compute module industrial computer 29:29 Dodgy truck LED tailight assembly 38:00 Joulescope: Precision DC Energy Analyzer Kickstarter With lengthy discussion on current measurement autoranging. Forum HERE

Dave bought a 6.5 digit Phillips PM2534 on Ebay for $140 delivered. Did it even survive the shipping? $200 Ebay 6.5 digit DMM video: https://www.youtube.com/watch?v=I2HcJ80OyrA Forum HERE

How good is your existing oscilloscopes FFT function with the $10 DIY EMC H-field probe compared with a dedicated spectrum analyser? Dave tries the DIY EMC probe with half a dozen different low cost scopes, so it turned into a bit of a practical FFT shootout: Rigol DS1054Z Siglent SDS1202X-E Keysight DSO1204X Rohde & Schwarz ...

A comprehensive tutorial on room (space) heater technology and their effectiveness and efficiency in heating rooms and homes. The different types of heat transfer are discussed, along with the different types of heater technology available and how they apply to room and object heating. The 2nd law of thermodynamics, and the impossibility of new graphene ...

Busting the SOLUS Kickstarter – “The Most Efficient Radiator In The World” based on “completely new, eco-friendly and graphene-based technology” “Save over 80% on your next heating utility bill”! TLDR; It’s a crazy expensive 200W – 300W glass panel heater with magic woo-woo graphene paste that does not produce any more heat than any other ...

Will this dumpster 500MHz 4 channel Tektronix TDS540D scope work? Teardown included of course. Forum HERE