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/eevblog-1176-2-layer-vs-4-layer-pcb-emc-tested!/
https://gigatron.io/
Designing the 4 layer board: https://www.youtube.com/watch?v=Ep4r-wD7PPs
Bypass capacitor Visualised: https://www.youtube.com/watch?v=1xicZF9glH0
PCB Power Plan Capacitance: https://www.youtube.com/watch?v=CBD9vwKcvtY
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#PCBdesign #PCBdesign #EMC
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/eevblog-1176-2-layer-vs-4-layer-pcb-emc-tested!/
https://gigatron.io/
Designing the 4 layer board: https://www.youtube.com/watch?v=Ep4r-wD7PPs
Bypass capacitor Visualised: https://www.youtube.com/watch?v=1xicZF9glH0
PCB Power Plan Capacitance: https://www.youtube.com/watch?v=CBD9vwKcvtY
Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy
Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA
Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/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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