EEVblog #1117 - PCB Power Plane Capacitance

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 as a capacitor. Forum: EEVblog Main Web Site: The 2nd EEVblog Channel: Support the EEVblog through Patreon! Stuff I recommend: Donate With Bitcoin & Other Crypto Currencies! T-Shirts: Likecoin – Coins for Likes: @eevblog/dil9/hcq3 💗 Likecoin – Coins for Likes: @eevblog/dil9/hcq3 Теги: eevblog,video,pcb power plane,pcb design,pcb layout,pcb bypassing,power supply bypassing,bypass capacitor,frequency response,bode 100,capacitor resonance,pcb stackup,pcb prepreg,pcb prepreg material,fr4 fiberglass,fr4 pcb,fr4 laminate,decoupling capacitor,pcb signal integrity,loop area,pcb ground plane,pcb power plane design,pcb construction