Dreamt that Sara and I were in my parents' kitchen and Sara was cooking us breakfast.

We walked upstairs to the attic, and there was a little restaurant up there. I thought about this and got all excited when I realized that this was the same as some attic restaurant I had been at or thinking about earlier. As I was trying to explain to Sara my being excited about it, we walked outside (the attic was apparently the ground floor on that side) and the attic restaurant became the entrance to a subway station. We turned left and walked along a concrete path until we came to a large circular pit (maybe 80 feet across and 20 feet deep) with steps to our right leading down to the bottom. It was empty now but sometimes used as like an amphitheater or something. There were lights aound the edge and flags on poles.

It was dark and misty and very windy. "Seems like a storm" I said, as the wind continued to pick up. "We'd better get back down to the subway."

But just as we turned around to head back we saw there was now a huge tornado right over the entrance to the station. Maybe we should head down into the pit. I wondered if there are any enclosed places that would be safe. I imagined us climbing down into a manhole and hiding at the bottom.

Then I woke up. Sara was getting ready to go to work. I got up and started sipping a soylent and hung around the kitchen with her until she left. Then I took a nap on the couch with Yoru.

Today I learned that when wiring an N-channel mosfet, the 'source' pin should be grounded. It took me like an hour and a half to figure out why mine wasn't working like I expected. I guess I should think of it as the 'source' of electrons.

MOSFET beginner tutorial says:

>Where to put the load to a MOSFET? Source or Drain?

Because load has resistance, which is basically a resitor. For N-channel MOSFET the reason we usually put the load at the Drain side is because of the Source is usually connected to GND.

If load is connected at the source side, the Vgs will needs to be higher in order to switch the MOSFET, or there will be insufficient current flow between source and drain than expected.

Heat Sink connected to the Drain?

Typically the heat sink on the back of a MOSFET is connected to the Drain! If you mount multiple MOSFETs on a heat sink, they must be electrically isolated from the heat sink! It’s good practice to isolate regardless in case the heat sink is bolted to a grounding frame.

I donn't quite get the first part.

Seems kind of unfortunate that the heat sink is connected to drain and that you have to isolate them.