EEVblog #1176 - 2 Layer vs 4 Layer PCB EMC TESTED!
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: !/
/
Designing the 4 layer board:
Bypass capacitor Visualised:
PCB Power Plan Capacitance:
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Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA
Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce
EEVblog Main Web Site:
The 2nd EEVblog Channel:
Support the EEVblog through Patreon!
AliExpress Affiliate:
Buy anything through that link and Dave gets a commission at no cost to you.
Stuff I recommend:
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Donate With Bitcoin & Other Crypto Currencies!
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T-Shirts:
Likecoin – Coins for Likes:
#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: !/
/
Designing the 4 layer board:
Bypass capacitor Visualised:
PCB Power Plan Capacitance:
Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy
Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA
Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce
EEVblog Main Web Site:
The 2nd EEVblog Channel:
Support the EEVblog through Patreon!
AliExpress Affiliate:
Buy anything through that link and Dave gets a commission at no cost to you.
Stuff I recommend:
/
Donate With Bitcoin & Other Crypto Currencies!
/
T-Shirts:
Likecoin – Coins for Likes:
#PCBdesign #PCBdesign #EMC
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