EEVblog 1176 2 Layer vs 4 Layer PCB EMC TESTED

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=crs_QLuUTyQ

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 impedance is also explained. • The PCB layout is then examined to look at loop area and by-passing and what effect this has. • Forum: http://www.eevblog.com/forum/blog/eev... • https://gigatron.io/ • Designing the 4 layer board: • KiCAD PCB Design • Bypass capacitor Visualised: • EEVblog #1085 - Bypass Capacitors Vis... • PCB Power Plan Capacitance: • EEVblog #1117 - PCB Power Plane Capac... • Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy • Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA • Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce • EEVblog Main Web Site: http://www.eevblog.com • The 2nd EEVblog Channel: / eevblog2 • Support the EEVblog through Patreon! • / eevblog • AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g • Buy anything through that link and Dave gets a commission at no cost to you. • Stuff I recommend: • https://kit.com/EEVblog/ • Donate With Bitcoin Other Crypto Currencies! • https://www.eevblog.com/crypto-currency/ • • T-Shirts: http://teespring.com/stores/eevblog • Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3 • #PCBdesign #PCBdesign #EMC

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