PCB Design & Manufacture

When does PCB propagation delay matter in PCB layout? Dave goes down the rabbit hole from DIY TTL processor design to DDR memory design and layout. DDR memory termination. What is a timing budget? When is it important? How does signal integrity matter? When do you have to do serpentine …

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 …

What difference does a 4 layer PCB make to EMC radiated emissions compared to an identical 2 layer PCB? And why? Dave does H-Field near-field probe testing on two otherwise identical PCB’s. Electromagnetic waves and the difference between near field and far field, and H-Field and E-field probes and wave …

PCB mod boards are useful for a whole range of applications and scenarios from production to upgrades, repair, and hacks. Dave shows you several examples and talks about creating manufacturing panels for them, along with castellations, V-Scoring, routing, and manufacturability. Forum HERE Podcast: Download

Are power planes in a 4 layer PCB any good as a capacitor? Can it work as one big bypass capacitor? A look at an discussion on PCB layer stackups, and some measurements on 4 and 8 layer PCB power planes with different prepreg thicknesses and how well they work …