Lec 5 | MIT 6.002 Circuits and Electronics, Spring 2007

Inside the digital gate

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Category:

Education

Tags:

• mit
• opencourseware
• mathematics
• differential
• equations
• coefficients
• oscillations
• resonance
• numbers

[bananinhao]

ok

[agapitoflores001]

I would love to watch more videos like this.

[MrPEDOCTOR]

A very interesting video.

[Missmethinksalot1]

Love his teaching style

[MatrixOfDynamism]

@hassanijw No Indian.

[ImpoliteFruit]

@dhartin Mainly because the NAND gate is simpler to build than the AND gate (and hence often used to build other gates). Also because engineering is about simplifying, so NAND is shorter to write and say than "NOT AND". NAND is the accepted term for the gate as well.

I hope that made some sense. :)

[EarthlingObserver]

So, Mr.Darkside, if Im building a circuit with both pnp and npn transistors, and I'm assuming that voltage and current are originating from the same direction, how do you think that will work out for me?

[jojygv]

Good teacher. I wish I had a teacher like this when I was "learning" electronics.

[DarksideEE7]

@EarthlingObserver

The hydraulic analogy is a perfectly viable example from which to understand electric components. Sign convention in circuit theory is arbitrary, so you need not apply it to that analogy. Simple comparisons such as:

electrical current > hydraulic current

voltage > pressure

resistor > pipe diameter

inductor > paddle wheel

capacitor > small rubber tank

Wikipedia has a great entry on it.....just search 'hydraulic analogy' and it's the first article.

[EarthlingObserver]

@lobo25usn current flows from negative to positive, from source to drain, you are right. using plumbing as an example is a bad idea because the source of water and water pressure are in the same direction where voltage and current are not.