Okay, so I started messing around with this thing called a depletion MOSFET. I saw this in a tutorial and thought it would be cool to try it out. You know, learning new stuff is always fun, right?
First, I read up on what a MOSFET even is. It’s like this electronic switch thing, short for Metal Oxide Semiconductor Field Effect Transistor. I learned that there are two main types, like siblings, enhancement and depletion. It said online that these depletion types are a bit of a pain to make and control, so of course, I wanted to see that for myself!
Digging into the details
I spent some time trying to understand how this depletion MOSFET works. It’s kind of related to the usual enhancement MOSFET, but it’s like, the less popular cousin. I found some notes and stuff about a thing called Dn2540, which seems to be related, but I didn’t really mess with that this time.
- I grabbed a few of these high-voltage depletion MOSFETs that I found online.
- Then I tried making a simple two-terminal current source with it.
- I played around with some circuits, trying to understand this “depletion region” thing I read about.
Honestly, it was kinda tricky at first. It’s not as straightforward as the enhancement type. I had to re-read some parts a couple of times. There were a few moments where I was like, “Wait, what?” But, you know, I kept at it.
I tried to figure out if there’s a simple way to tell if a MOSFET is enhancement or depletion, just by looking at it or something. No luck there, it seems. But it’s all good, it was still a fun learning experience. I spent a good few evenings on this, and I gotta say, it’s pretty satisfying when you finally see things starting to make sense.
I’m still not a pro at this, but I’m getting there. It was definitely worth the time. I am going to explore more about this next week!
