Wednesday, December 25, 2013

Byte and Switch (Part 1)

Byte and Switch (Part 1): "Imagine for a minute you have an electromagnet, and a microcontroller, and you want to use the microcontroller to turn the electromagnet on and off. Sounds pretty typical, right?

We ask this question on our interviews of entry-level electrical engineers: what do you put between the microcontroller and the electromagnet?
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Byte and Switch (Part 1)

Byte and Switch (Part 1):

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bildr » High-Power Control: Arduino + N-Channel MOSFET

bildr » High-Power Control: Arduino + N-Channel MOSFET:

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bildr » High-Power Control: Arduino + N-Channel MOSFET

bildr » High-Power Control: Arduino + N-Channel MOSFET: "RFP30N06LE MOSFET"

Friday, December 06, 2013

Stealth Mode: Killer Whales Go Dark to Stalk Prey | LiveScience

Stealth Mode: Killer Whales Go Dark to Stalk Prey | LiveScience: ""The two types don't interact, they don't interbreed, they're almost different species in the making," Deecke told LiveScience.

The fish-eating whales are vocal, clicking and calling to each other to echolocate food."

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