Month: August 2017

韓国から愛をこめたカンチョー

Funny

ちょっとガキっぽいげど、この下ネタを見逃しません:

Kancho is LOVE. カンチョーはラブである。
Kancho from the back. 後ろ。
Contrary to common design, the bag is supposed to be opened from the middle. Exactly what Kancho does!　もちろん、開け口は間中です。カンチョーですから。

中身は生チョッコだから、イメージはぴったりです。

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EMC PCB Layout Notes

Note To Self, Electronics
  • Implicit RLC (potentially filters) and antennas formed by traces
  • Large ground/voltage planes serves as EMI shield, low impedance path current sink
  • True differential signals can be generated by current sources
  • Decouple with ferrite beads if radiation inevitable by geometry/placement
  • Avoid / minimize large current swings on analog plane (e.g. buffer digital signals)
  • Star ground when splitting sections: don’t let heavy digital current sink through analog ground by cascading the grounds.
  • Don’t really need to split planes as long as large digital current’s preferred return paths are localized and far away from the analog section.
  • AGND/DGND refers to the grounds responsible for different sections of a mixed-signal IC. Has nothing to do with which actual ground to tie to. (e.g. DGND pin in ADC chips still goes to analog ground plane as it has low switching current)

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Rick and Morty Quote: What people called love

Favorite Quotes

From Rick and Morty Season 1, Episode 6:

Rick: Listen Morty, I hate to break it to you, but what people calls “love” is just a chemical reaction that compels animals to breed. It hits hard, Morty, then it slowly fades, leaving you stranded in a failing marriage. I (Morty’s grandpa) did it. Your parents are gonna do it. Break the cycle, Morty. Rise above. Focus on science.

A follow up from Episode 9:

With the writers Rick and Morty, universities can close down the philosophy department and move all the logicians to the math department:

A follow up from Episode 8:

Nobody exists on purpose 

 

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